/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.zaher.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 23:20:43,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 23:20:43,239 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 23:20:43,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 23:20:43,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 23:20:43,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 23:20:43,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 23:20:43,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 23:20:43,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 23:20:43,266 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 23:20:43,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 23:20:43,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 23:20:43,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 23:20:43,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 23:20:43,268 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 23:20:43,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 23:20:43,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 23:20:43,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 23:20:43,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 23:20:43,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 23:20:43,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 23:20:43,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 23:20:43,269 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 23:20:43,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 23:20:43,269 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 23:20:43,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 23:20:43,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 23:20:43,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 23:20:43,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 23:20:43,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:20:43,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 23:20:43,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 23:20:43,271 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 23:20:43,271 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 23:20:43,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 23:20:43,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 23:20:43,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 23:20:43,272 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 23:20:43,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 23:20:43,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 23:20:43,272 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 23:20:43,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 23:20:43,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 23:20:43,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 23:20:43,425 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 23:20:43,429 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 23:20:43,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.zaher.c [2023-12-25 23:20:44,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 23:20:44,558 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 23:20:44,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.zaher.c [2023-12-25 23:20:44,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad8d9d8f/a91db20c75704cd2b874d44e5078e3b1/FLAG3ae172e73 [2023-12-25 23:20:44,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad8d9d8f/a91db20c75704cd2b874d44e5078e3b1 [2023-12-25 23:20:44,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 23:20:44,974 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 23:20:44,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 23:20:44,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 23:20:44,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 23:20:44,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:20:44" (1/1) ... [2023-12-25 23:20:44,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dad97c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:44, skipping insertion in model container [2023-12-25 23:20:44,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:20:44" (1/1) ... [2023-12-25 23:20:45,007 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 23:20:45,097 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.zaher.c[1245,1258] [2023-12-25 23:20:45,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:20:45,182 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 23:20:45,189 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.zaher.c[1245,1258] [2023-12-25 23:20:45,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:20:45,270 INFO L206 MainTranslator]: Completed translation [2023-12-25 23:20:45,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45 WrapperNode [2023-12-25 23:20:45,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 23:20:45,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 23:20:45,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 23:20:45,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 23:20:45,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,361 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 860 [2023-12-25 23:20:45,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 23:20:45,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 23:20:45,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 23:20:45,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 23:20:45,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,447 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-12-25 23:20:45,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 23:20:45,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 23:20:45,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 23:20:45,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 23:20:45,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (1/1) ... [2023-12-25 23:20:45,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:20:45,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:20:45,541 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) [2023-12-25 23:20:45,549 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 [2023-12-25 23:20:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 23:20:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 23:20:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-25 23:20:45,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 23:20:45,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 23:20:45,714 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 23:20:45,716 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 23:20:46,310 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 23:20:46,341 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 23:20:46,341 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 23:20:46,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:20:46 BoogieIcfgContainer [2023-12-25 23:20:46,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 23:20:46,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 23:20:46,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 23:20:46,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 23:20:46,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 11:20:44" (1/3) ... [2023-12-25 23:20:46,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3425da62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:20:46, skipping insertion in model container [2023-12-25 23:20:46,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:20:45" (2/3) ... [2023-12-25 23:20:46,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3425da62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:20:46, skipping insertion in model container [2023-12-25 23:20:46,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:20:46" (3/3) ... [2023-12-25 23:20:46,348 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.zaher.c [2023-12-25 23:20:46,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 23:20:46,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 23:20:46,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 23:20:46,410 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;@30ebbe0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 23:20:46,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 23:20:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.6666666666666667) internal successors, (225), 136 states have internal predecessors, (225), 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) [2023-12-25 23:20:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-25 23:20:46,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:46,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:46,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:46,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:46,437 INFO L85 PathProgramCache]: Analyzing trace with hash 2003281646, now seen corresponding path program 1 times [2023-12-25 23:20:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938846342] [2023-12-25 23:20:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:46,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:46,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938846342] [2023-12-25 23:20:46,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938846342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:46,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:46,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:46,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596501398] [2023-12-25 23:20:46,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:46,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:20:46,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:20:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:46,909 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.6666666666666667) internal successors, (225), 136 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-12-25 23:20:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:46,962 INFO L93 Difference]: Finished difference Result 231 states and 381 transitions. [2023-12-25 23:20:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:20:46,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2023-12-25 23:20:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:46,974 INFO L225 Difference]: With dead ends: 231 [2023-12-25 23:20:46,975 INFO L226 Difference]: Without dead ends: 137 [2023-12-25 23:20:46,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:46,979 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:46,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 649 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:46,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-25 23:20:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-12-25 23:20:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.6397058823529411) internal successors, (223), 136 states have internal predecessors, (223), 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) [2023-12-25 23:20:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 223 transitions. [2023-12-25 23:20:47,024 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 223 transitions. Word has length 52 [2023-12-25 23:20:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:47,024 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 223 transitions. [2023-12-25 23:20:47,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2023-12-25 23:20:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 223 transitions. [2023-12-25 23:20:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-25 23:20:47,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:47,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:47,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 23:20:47,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:47,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1973914118, now seen corresponding path program 1 times [2023-12-25 23:20:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:47,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136746718] [2023-12-25 23:20:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:47,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:47,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136746718] [2023-12-25 23:20:47,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136746718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:47,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:47,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:47,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741808063] [2023-12-25 23:20:47,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:47,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:20:47,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:47,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:20:47,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:47,202 INFO L87 Difference]: Start difference. First operand 137 states and 223 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-12-25 23:20:47,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:47,221 INFO L93 Difference]: Finished difference Result 234 states and 379 transitions. [2023-12-25 23:20:47,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:20:47,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2023-12-25 23:20:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:47,222 INFO L225 Difference]: With dead ends: 234 [2023-12-25 23:20:47,222 INFO L226 Difference]: Without dead ends: 140 [2023-12-25 23:20:47,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:47,223 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 1 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:47,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 647 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:47,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-25 23:20:47,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2023-12-25 23:20:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.6304347826086956) internal successors, (225), 138 states have internal predecessors, (225), 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) [2023-12-25 23:20:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 225 transitions. [2023-12-25 23:20:47,229 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 225 transitions. Word has length 53 [2023-12-25 23:20:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:47,229 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 225 transitions. [2023-12-25 23:20:47,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-12-25 23:20:47,229 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 225 transitions. [2023-12-25 23:20:47,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-25 23:20:47,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:47,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:47,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 23:20:47,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:47,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash 851363336, now seen corresponding path program 1 times [2023-12-25 23:20:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:47,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149260976] [2023-12-25 23:20:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:47,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149260976] [2023-12-25 23:20:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149260976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:47,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:47,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:47,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837773830] [2023-12-25 23:20:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:47,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:20:47,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:20:47,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:47,524 INFO L87 Difference]: Start difference. First operand 139 states and 225 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-12-25 23:20:47,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:47,620 INFO L93 Difference]: Finished difference Result 335 states and 539 transitions. [2023-12-25 23:20:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:20:47,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2023-12-25 23:20:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:47,622 INFO L225 Difference]: With dead ends: 335 [2023-12-25 23:20:47,622 INFO L226 Difference]: Without dead ends: 239 [2023-12-25 23:20:47,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:20:47,627 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 639 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:47,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 631 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-25 23:20:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 145. [2023-12-25 23:20:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.6180555555555556) internal successors, (233), 144 states have internal predecessors, (233), 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) [2023-12-25 23:20:47,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 233 transitions. [2023-12-25 23:20:47,648 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 233 transitions. Word has length 54 [2023-12-25 23:20:47,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:47,648 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 233 transitions. [2023-12-25 23:20:47,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-12-25 23:20:47,649 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 233 transitions. [2023-12-25 23:20:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-25 23:20:47,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:47,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:47,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 23:20:47,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:47,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:47,650 INFO L85 PathProgramCache]: Analyzing trace with hash -990113200, now seen corresponding path program 1 times [2023-12-25 23:20:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:47,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918940843] [2023-12-25 23:20:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918940843] [2023-12-25 23:20:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918940843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:47,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:47,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:20:47,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311694965] [2023-12-25 23:20:47,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:47,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:20:47,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:47,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:20:47,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:20:47,977 INFO L87 Difference]: Start difference. First operand 145 states and 233 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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) [2023-12-25 23:20:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:48,096 INFO L93 Difference]: Finished difference Result 338 states and 542 transitions. [2023-12-25 23:20:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:20:48,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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 55 [2023-12-25 23:20:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:48,098 INFO L225 Difference]: With dead ends: 338 [2023-12-25 23:20:48,098 INFO L226 Difference]: Without dead ends: 242 [2023-12-25 23:20:48,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:20:48,105 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 641 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:48,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1067 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:20:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-25 23:20:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 147. [2023-12-25 23:20:48,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 146 states have internal predecessors, (235), 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) [2023-12-25 23:20:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 235 transitions. [2023-12-25 23:20:48,116 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 235 transitions. Word has length 55 [2023-12-25 23:20:48,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:48,116 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 235 transitions. [2023-12-25 23:20:48,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 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) [2023-12-25 23:20:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 235 transitions. [2023-12-25 23:20:48,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-25 23:20:48,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:48,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:48,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 23:20:48,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:48,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash -985529758, now seen corresponding path program 1 times [2023-12-25 23:20:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:48,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726579193] [2023-12-25 23:20:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:48,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:48,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:48,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726579193] [2023-12-25 23:20:48,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726579193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:48,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:48,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:20:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763102729] [2023-12-25 23:20:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:48,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:20:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:48,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:20:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:20:48,400 INFO L87 Difference]: Start difference. First operand 147 states and 235 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 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) [2023-12-25 23:20:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:48,517 INFO L93 Difference]: Finished difference Result 428 states and 685 transitions. [2023-12-25 23:20:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:20:48,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2023-12-25 23:20:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:48,519 INFO L225 Difference]: With dead ends: 428 [2023-12-25 23:20:48,520 INFO L226 Difference]: Without dead ends: 332 [2023-12-25 23:20:48,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:20:48,521 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 774 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:48,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1049 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:20:48,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-25 23:20:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 150. [2023-12-25 23:20:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.604026845637584) internal successors, (239), 149 states have internal predecessors, (239), 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) [2023-12-25 23:20:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 239 transitions. [2023-12-25 23:20:48,525 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 239 transitions. Word has length 56 [2023-12-25 23:20:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:48,526 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 239 transitions. [2023-12-25 23:20:48,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 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) [2023-12-25 23:20:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 239 transitions. [2023-12-25 23:20:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-25 23:20:48,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:48,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:48,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 23:20:48,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:48,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1803178208, now seen corresponding path program 1 times [2023-12-25 23:20:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484971618] [2023-12-25 23:20:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:48,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:48,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484971618] [2023-12-25 23:20:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484971618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:48,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:48,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:48,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146573440] [2023-12-25 23:20:48,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:48,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:20:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:20:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:48,665 INFO L87 Difference]: Start difference. First operand 150 states and 239 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-12-25 23:20:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:48,690 INFO L93 Difference]: Finished difference Result 336 states and 538 transitions. [2023-12-25 23:20:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:20:48,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2023-12-25 23:20:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:48,692 INFO L225 Difference]: With dead ends: 336 [2023-12-25 23:20:48,692 INFO L226 Difference]: Without dead ends: 240 [2023-12-25 23:20:48,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:48,693 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 141 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:48,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 719 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-12-25 23:20:48,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 152. [2023-12-25 23:20:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.596026490066225) internal successors, (241), 151 states have internal predecessors, (241), 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) [2023-12-25 23:20:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 241 transitions. [2023-12-25 23:20:48,697 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 241 transitions. Word has length 56 [2023-12-25 23:20:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:48,697 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 241 transitions. [2023-12-25 23:20:48,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2023-12-25 23:20:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 241 transitions. [2023-12-25 23:20:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-25 23:20:48,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:48,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:48,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 23:20:48,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:48,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:48,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1142930450, now seen corresponding path program 1 times [2023-12-25 23:20:48,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:48,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83716445] [2023-12-25 23:20:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:48,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:48,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:48,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83716445] [2023-12-25 23:20:48,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83716445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:48,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:48,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:48,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665160314] [2023-12-25 23:20:48,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:48,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:20:48,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:48,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:20:48,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:48,785 INFO L87 Difference]: Start difference. First operand 152 states and 241 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:48,807 INFO L93 Difference]: Finished difference Result 339 states and 539 transitions. [2023-12-25 23:20:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:20:48,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-25 23:20:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:48,809 INFO L225 Difference]: With dead ends: 339 [2023-12-25 23:20:48,809 INFO L226 Difference]: Without dead ends: 241 [2023-12-25 23:20:48,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:48,809 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 138 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:48,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 709 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-25 23:20:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 154. [2023-12-25 23:20:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.588235294117647) internal successors, (243), 153 states have internal predecessors, (243), 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) [2023-12-25 23:20:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 243 transitions. [2023-12-25 23:20:48,813 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 243 transitions. Word has length 57 [2023-12-25 23:20:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:48,813 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 243 transitions. [2023-12-25 23:20:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 243 transitions. [2023-12-25 23:20:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-25 23:20:48,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:48,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:48,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 23:20:48,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:48,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1488824440, now seen corresponding path program 1 times [2023-12-25 23:20:48,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:48,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930714319] [2023-12-25 23:20:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:48,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:48,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930714319] [2023-12-25 23:20:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930714319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:48,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:48,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:20:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913393954] [2023-12-25 23:20:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:48,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:20:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:20:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:48,926 INFO L87 Difference]: Start difference. First operand 154 states and 243 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-25 23:20:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:48,953 INFO L93 Difference]: Finished difference Result 342 states and 540 transitions. [2023-12-25 23:20:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:20:48,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-25 23:20:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:48,955 INFO L225 Difference]: With dead ends: 342 [2023-12-25 23:20:48,955 INFO L226 Difference]: Without dead ends: 242 [2023-12-25 23:20:48,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:20:48,955 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 135 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:48,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 941 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-25 23:20:48,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 156. [2023-12-25 23:20:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.5806451612903225) internal successors, (245), 155 states have internal predecessors, (245), 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) [2023-12-25 23:20:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 245 transitions. [2023-12-25 23:20:48,959 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 245 transitions. Word has length 58 [2023-12-25 23:20:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:48,959 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 245 transitions. [2023-12-25 23:20:48,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-25 23:20:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 245 transitions. [2023-12-25 23:20:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-25 23:20:48,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:48,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:48,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 23:20:48,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:48,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -934573576, now seen corresponding path program 1 times [2023-12-25 23:20:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:48,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260930590] [2023-12-25 23:20:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260930590] [2023-12-25 23:20:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260930590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123229335] [2023-12-25 23:20:49,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:49,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:20:49,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:20:49,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:49,046 INFO L87 Difference]: Start difference. First operand 156 states and 245 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2023-12-25 23:20:49,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:49,072 INFO L93 Difference]: Finished difference Result 345 states and 541 transitions. [2023-12-25 23:20:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:20:49,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2023-12-25 23:20:49,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:49,074 INFO L225 Difference]: With dead ends: 345 [2023-12-25 23:20:49,074 INFO L226 Difference]: Without dead ends: 243 [2023-12-25 23:20:49,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:49,076 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 132 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:49,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 689 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-25 23:20:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 158. [2023-12-25 23:20:49,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.5732484076433122) internal successors, (247), 157 states have internal predecessors, (247), 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) [2023-12-25 23:20:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 247 transitions. [2023-12-25 23:20:49,085 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 247 transitions. Word has length 59 [2023-12-25 23:20:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:49,086 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 247 transitions. [2023-12-25 23:20:49,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2023-12-25 23:20:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 247 transitions. [2023-12-25 23:20:49,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-25 23:20:49,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:49,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:49,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 23:20:49,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:49,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2028551570, now seen corresponding path program 1 times [2023-12-25 23:20:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799586718] [2023-12-25 23:20:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:49,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:49,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799586718] [2023-12-25 23:20:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799586718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:49,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:49,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401259695] [2023-12-25 23:20:49,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:49,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:20:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:20:49,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:49,174 INFO L87 Difference]: Start difference. First operand 158 states and 247 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2023-12-25 23:20:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:49,195 INFO L93 Difference]: Finished difference Result 348 states and 542 transitions. [2023-12-25 23:20:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:20:49,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2023-12-25 23:20:49,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:49,196 INFO L225 Difference]: With dead ends: 348 [2023-12-25 23:20:49,196 INFO L226 Difference]: Without dead ends: 244 [2023-12-25 23:20:49,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:49,197 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 129 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:49,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 679 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-12-25 23:20:49,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 160. [2023-12-25 23:20:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.5660377358490567) internal successors, (249), 159 states have internal predecessors, (249), 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) [2023-12-25 23:20:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 249 transitions. [2023-12-25 23:20:49,202 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 249 transitions. Word has length 60 [2023-12-25 23:20:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:49,202 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 249 transitions. [2023-12-25 23:20:49,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2023-12-25 23:20:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 249 transitions. [2023-12-25 23:20:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-25 23:20:49,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:49,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:20:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 23:20:49,204 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:49,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1781324518, now seen corresponding path program 1 times [2023-12-25 23:20:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:49,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039371041] [2023-12-25 23:20:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:49,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039371041] [2023-12-25 23:20:49,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039371041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:49,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:49,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:20:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153396564] [2023-12-25 23:20:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:20:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:20:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:20:49,369 INFO L87 Difference]: Start difference. First operand 160 states and 249 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-25 23:20:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:49,425 INFO L93 Difference]: Finished difference Result 357 states and 553 transitions. [2023-12-25 23:20:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:20:49,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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 61 [2023-12-25 23:20:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:49,427 INFO L225 Difference]: With dead ends: 357 [2023-12-25 23:20:49,427 INFO L226 Difference]: Without dead ends: 251 [2023-12-25 23:20:49,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:20:49,428 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 585 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:49,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 876 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-12-25 23:20:49,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 163. [2023-12-25 23:20:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5679012345679013) internal successors, (254), 162 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 254 transitions. [2023-12-25 23:20:49,432 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 254 transitions. Word has length 61 [2023-12-25 23:20:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:49,432 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 254 transitions. [2023-12-25 23:20:49,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-25 23:20:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 254 transitions. [2023-12-25 23:20:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-25 23:20:49,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:49,435 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:49,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 23:20:49,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:49,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash -230901147, now seen corresponding path program 1 times [2023-12-25 23:20:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155232879] [2023-12-25 23:20:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 23:20:49,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:49,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155232879] [2023-12-25 23:20:49,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155232879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:49,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:49,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861894467] [2023-12-25 23:20:49,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:49,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:20:49,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:20:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:20:49,747 INFO L87 Difference]: Start difference. First operand 163 states and 254 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2023-12-25 23:20:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:49,773 INFO L93 Difference]: Finished difference Result 354 states and 548 transitions. [2023-12-25 23:20:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:20:49,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 122 [2023-12-25 23:20:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:49,776 INFO L225 Difference]: With dead ends: 354 [2023-12-25 23:20:49,776 INFO L226 Difference]: Without dead ends: 248 [2023-12-25 23:20:49,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:49,778 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 126 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:49,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 898 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-25 23:20:49,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 165. [2023-12-25 23:20:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5609756097560976) internal successors, (256), 164 states have internal predecessors, (256), 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) [2023-12-25 23:20:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 256 transitions. [2023-12-25 23:20:49,782 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 256 transitions. Word has length 122 [2023-12-25 23:20:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:49,782 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 256 transitions. [2023-12-25 23:20:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2023-12-25 23:20:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 256 transitions. [2023-12-25 23:20:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-25 23:20:49,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:49,784 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:49,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 23:20:49,784 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:49,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:49,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1323193281, now seen corresponding path program 1 times [2023-12-25 23:20:49,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:49,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269970419] [2023-12-25 23:20:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:49,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 23:20:50,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:50,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269970419] [2023-12-25 23:20:50,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269970419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:50,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:50,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:20:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464387503] [2023-12-25 23:20:50,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:50,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:20:50,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:50,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:20:50,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:50,095 INFO L87 Difference]: Start difference. First operand 165 states and 256 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-25 23:20:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:50,119 INFO L93 Difference]: Finished difference Result 357 states and 549 transitions. [2023-12-25 23:20:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 23:20:50,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 123 [2023-12-25 23:20:50,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:50,120 INFO L225 Difference]: With dead ends: 357 [2023-12-25 23:20:50,120 INFO L226 Difference]: Without dead ends: 249 [2023-12-25 23:20:50,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:20:50,121 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 123 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:50,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1012 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-25 23:20:50,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 167. [2023-12-25 23:20:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5542168674698795) internal successors, (258), 166 states have internal predecessors, (258), 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) [2023-12-25 23:20:50,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 258 transitions. [2023-12-25 23:20:50,126 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 258 transitions. Word has length 123 [2023-12-25 23:20:50,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:50,126 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 258 transitions. [2023-12-25 23:20:50,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-12-25 23:20:50,126 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 258 transitions. [2023-12-25 23:20:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-25 23:20:50,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:50,127 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:50,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-25 23:20:50,127 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:50,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:50,128 INFO L85 PathProgramCache]: Analyzing trace with hash -302539253, now seen corresponding path program 1 times [2023-12-25 23:20:50,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:50,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033426351] [2023-12-25 23:20:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:50,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:50,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:50,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033426351] [2023-12-25 23:20:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033426351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:20:50,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724720733] [2023-12-25 23:20:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:50,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:20:50,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:20:50,627 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) [2023-12-25 23:20:50,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 23:20:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:50,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-25 23:20:50,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:20:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:51,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:20:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724720733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:51,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:20:51,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 12 [2023-12-25 23:20:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910107752] [2023-12-25 23:20:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:51,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:20:51,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:20:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:20:51,568 INFO L87 Difference]: Start difference. First operand 167 states and 258 transitions. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 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) [2023-12-25 23:20:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:52,143 INFO L93 Difference]: Finished difference Result 415 states and 628 transitions. [2023-12-25 23:20:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:20:52,143 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 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 124 [2023-12-25 23:20:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:52,144 INFO L225 Difference]: With dead ends: 415 [2023-12-25 23:20:52,144 INFO L226 Difference]: Without dead ends: 305 [2023-12-25 23:20:52,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2023-12-25 23:20:52,145 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 505 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:52,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1148 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 23:20:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-25 23:20:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 167. [2023-12-25 23:20:52,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.536144578313253) internal successors, (255), 166 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:20:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 255 transitions. [2023-12-25 23:20:52,151 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 255 transitions. Word has length 124 [2023-12-25 23:20:52,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:52,151 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 255 transitions. [2023-12-25 23:20:52,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 9 states have internal predecessors, (124), 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) [2023-12-25 23:20:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 255 transitions. [2023-12-25 23:20:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-25 23:20:52,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:52,152 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:52,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 23:20:52,359 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,SelfDestructingSolverStorable13 [2023-12-25 23:20:52,359 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:52,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:52,360 INFO L85 PathProgramCache]: Analyzing trace with hash -895427333, now seen corresponding path program 1 times [2023-12-25 23:20:52,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:52,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572694227] [2023-12-25 23:20:52,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:52,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572694227] [2023-12-25 23:20:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572694227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:53,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:20:53,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565234588] [2023-12-25 23:20:53,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:53,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:20:53,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:53,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:20:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:20:53,026 INFO L87 Difference]: Start difference. First operand 167 states and 255 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 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) [2023-12-25 23:20:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:53,114 INFO L93 Difference]: Finished difference Result 475 states and 717 transitions. [2023-12-25 23:20:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:20:53,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 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 125 [2023-12-25 23:20:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:53,116 INFO L225 Difference]: With dead ends: 475 [2023-12-25 23:20:53,116 INFO L226 Difference]: Without dead ends: 365 [2023-12-25 23:20:53,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:20:53,118 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 793 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:53,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1057 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:20:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-12-25 23:20:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 204. [2023-12-25 23:20:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.4975369458128078) internal successors, (304), 203 states have internal predecessors, (304), 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) [2023-12-25 23:20:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 304 transitions. [2023-12-25 23:20:53,123 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 304 transitions. Word has length 125 [2023-12-25 23:20:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:53,123 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 304 transitions. [2023-12-25 23:20:53,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 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) [2023-12-25 23:20:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 304 transitions. [2023-12-25 23:20:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-25 23:20:53,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:53,124 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:53,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-25 23:20:53,125 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:53,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:53,125 INFO L85 PathProgramCache]: Analyzing trace with hash 803945149, now seen corresponding path program 1 times [2023-12-25 23:20:53,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:53,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68452185] [2023-12-25 23:20:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:53,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:53,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:53,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68452185] [2023-12-25 23:20:53,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68452185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:53,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:53,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:20:53,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688637050] [2023-12-25 23:20:53,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:53,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:20:53,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:53,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:20:53,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:20:53,386 INFO L87 Difference]: Start difference. First operand 204 states and 304 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2023-12-25 23:20:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:53,534 INFO L93 Difference]: Finished difference Result 428 states and 638 transitions. [2023-12-25 23:20:53,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:20:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 126 [2023-12-25 23:20:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:53,535 INFO L225 Difference]: With dead ends: 428 [2023-12-25 23:20:53,536 INFO L226 Difference]: Without dead ends: 316 [2023-12-25 23:20:53,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:20:53,536 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 155 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:53,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1511 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:20:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-25 23:20:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 206. [2023-12-25 23:20:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.4926829268292683) internal successors, (306), 205 states have internal predecessors, (306), 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) [2023-12-25 23:20:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 306 transitions. [2023-12-25 23:20:53,541 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 306 transitions. Word has length 126 [2023-12-25 23:20:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:53,541 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 306 transitions. [2023-12-25 23:20:53,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2023-12-25 23:20:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 306 transitions. [2023-12-25 23:20:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-25 23:20:53,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:53,542 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:53,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 23:20:53,542 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:53,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:53,543 INFO L85 PathProgramCache]: Analyzing trace with hash -670907431, now seen corresponding path program 1 times [2023-12-25 23:20:53,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:53,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629496705] [2023-12-25 23:20:53,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:53,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:53,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629496705] [2023-12-25 23:20:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629496705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:53,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:53,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:20:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905191376] [2023-12-25 23:20:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:53,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:20:53,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:20:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:53,835 INFO L87 Difference]: Start difference. First operand 206 states and 306 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-25 23:20:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:53,854 INFO L93 Difference]: Finished difference Result 324 states and 481 transitions. [2023-12-25 23:20:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:20:53,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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 126 [2023-12-25 23:20:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:53,855 INFO L225 Difference]: With dead ends: 324 [2023-12-25 23:20:53,855 INFO L226 Difference]: Without dead ends: 212 [2023-12-25 23:20:53,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:53,856 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:53,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 636 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:53,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-25 23:20:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2023-12-25 23:20:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.4832535885167464) internal successors, (310), 209 states have internal predecessors, (310), 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) [2023-12-25 23:20:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 310 transitions. [2023-12-25 23:20:53,860 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 310 transitions. Word has length 126 [2023-12-25 23:20:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:53,861 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 310 transitions. [2023-12-25 23:20:53,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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) [2023-12-25 23:20:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 310 transitions. [2023-12-25 23:20:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-25 23:20:53,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:53,862 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:53,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 23:20:53,862 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:53,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash -988294239, now seen corresponding path program 1 times [2023-12-25 23:20:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:53,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209136583] [2023-12-25 23:20:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:53,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:54,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:54,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209136583] [2023-12-25 23:20:54,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209136583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:54,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:54,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:20:54,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620327255] [2023-12-25 23:20:54,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:54,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:20:54,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:54,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:20:54,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:20:54,577 INFO L87 Difference]: Start difference. First operand 210 states and 310 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 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) [2023-12-25 23:20:54,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:54,764 INFO L93 Difference]: Finished difference Result 592 states and 874 transitions. [2023-12-25 23:20:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:20:54,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 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 127 [2023-12-25 23:20:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:54,766 INFO L225 Difference]: With dead ends: 592 [2023-12-25 23:20:54,766 INFO L226 Difference]: Without dead ends: 472 [2023-12-25 23:20:54,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-25 23:20:54,767 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1205 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:54,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 1369 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:20:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-12-25 23:20:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 220. [2023-12-25 23:20:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.4703196347031964) internal successors, (322), 219 states have internal predecessors, (322), 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) [2023-12-25 23:20:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 322 transitions. [2023-12-25 23:20:54,773 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 322 transitions. Word has length 127 [2023-12-25 23:20:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:54,773 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 322 transitions. [2023-12-25 23:20:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 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) [2023-12-25 23:20:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 322 transitions. [2023-12-25 23:20:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 23:20:54,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:54,774 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:54,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 23:20:54,774 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:54,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1934087063, now seen corresponding path program 1 times [2023-12-25 23:20:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:54,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838831234] [2023-12-25 23:20:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:55,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:55,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838831234] [2023-12-25 23:20:55,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838831234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:55,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:55,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:20:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649700728] [2023-12-25 23:20:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:55,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 23:20:55,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:55,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 23:20:55,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-25 23:20:55,041 INFO L87 Difference]: Start difference. First operand 220 states and 322 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2023-12-25 23:20:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:55,213 INFO L93 Difference]: Finished difference Result 480 states and 701 transitions. [2023-12-25 23:20:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 23:20:55,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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 128 [2023-12-25 23:20:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:55,215 INFO L225 Difference]: With dead ends: 480 [2023-12-25 23:20:55,215 INFO L226 Difference]: Without dead ends: 349 [2023-12-25 23:20:55,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:20:55,215 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 166 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:55,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1494 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:20:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-25 23:20:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 224. [2023-12-25 23:20:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.4618834080717489) internal successors, (326), 223 states have internal predecessors, (326), 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) [2023-12-25 23:20:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 326 transitions. [2023-12-25 23:20:55,222 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 326 transitions. Word has length 128 [2023-12-25 23:20:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:55,222 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 326 transitions. [2023-12-25 23:20:55,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 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) [2023-12-25 23:20:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 326 transitions. [2023-12-25 23:20:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 23:20:55,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:55,223 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-25 23:20:55,223 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:55,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash -688497871, now seen corresponding path program 1 times [2023-12-25 23:20:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:55,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101602853] [2023-12-25 23:20:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:55,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:55,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:55,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101602853] [2023-12-25 23:20:55,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101602853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:55,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:55,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:55,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190051458] [2023-12-25 23:20:55,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:55,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:20:55,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:20:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:55,495 INFO L87 Difference]: Start difference. First operand 224 states and 326 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2023-12-25 23:20:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:55,557 INFO L93 Difference]: Finished difference Result 485 states and 706 transitions. [2023-12-25 23:20:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:20:55,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 128 [2023-12-25 23:20:55,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:55,559 INFO L225 Difference]: With dead ends: 485 [2023-12-25 23:20:55,559 INFO L226 Difference]: Without dead ends: 352 [2023-12-25 23:20:55,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:20:55,560 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 616 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:55,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 669 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-25 23:20:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 234. [2023-12-25 23:20:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.446351931330472) internal successors, (337), 233 states have internal predecessors, (337), 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) [2023-12-25 23:20:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 337 transitions. [2023-12-25 23:20:55,567 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 337 transitions. Word has length 128 [2023-12-25 23:20:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:55,568 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 337 transitions. [2023-12-25 23:20:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2023-12-25 23:20:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 337 transitions. [2023-12-25 23:20:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 23:20:55,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:55,569 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:55,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 23:20:55,569 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:55,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1062970419, now seen corresponding path program 1 times [2023-12-25 23:20:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951832422] [2023-12-25 23:20:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:56,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:56,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951832422] [2023-12-25 23:20:56,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951832422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:20:56,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112932271] [2023-12-25 23:20:56,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:56,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:20:56,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:20:56,292 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) [2023-12-25 23:20:56,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 23:20:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:56,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-25 23:20:56,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:20:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:56,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:20:56,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112932271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:56,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:20:56,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2023-12-25 23:20:56,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750268919] [2023-12-25 23:20:56,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:56,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:20:56,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:20:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:20:56,639 INFO L87 Difference]: Start difference. First operand 234 states and 337 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 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) [2023-12-25 23:20:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:56,839 INFO L93 Difference]: Finished difference Result 489 states and 708 transitions. [2023-12-25 23:20:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:20:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 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 128 [2023-12-25 23:20:56,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:56,841 INFO L225 Difference]: With dead ends: 489 [2023-12-25 23:20:56,841 INFO L226 Difference]: Without dead ends: 354 [2023-12-25 23:20:56,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:20:56,841 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 460 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:56,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1708 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:20:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-25 23:20:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 231. [2023-12-25 23:20:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4434782608695653) internal successors, (332), 230 states have internal predecessors, (332), 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) [2023-12-25 23:20:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 332 transitions. [2023-12-25 23:20:56,847 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 332 transitions. Word has length 128 [2023-12-25 23:20:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:56,847 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 332 transitions. [2023-12-25 23:20:56,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 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) [2023-12-25 23:20:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 332 transitions. [2023-12-25 23:20:56,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 23:20:56,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:56,848 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:56,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-25 23:20:57,054 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,SelfDestructingSolverStorable20 [2023-12-25 23:20:57,055 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:57,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash -427136511, now seen corresponding path program 1 times [2023-12-25 23:20:57,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:57,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949403223] [2023-12-25 23:20:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:57,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:57,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:57,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949403223] [2023-12-25 23:20:57,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949403223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:20:57,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:20:57,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:20:57,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909982760] [2023-12-25 23:20:57,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:20:57,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:20:57,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:57,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:20:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:20:57,326 INFO L87 Difference]: Start difference. First operand 231 states and 332 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2023-12-25 23:20:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:20:57,380 INFO L93 Difference]: Finished difference Result 460 states and 661 transitions. [2023-12-25 23:20:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:20:57,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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 128 [2023-12-25 23:20:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:20:57,381 INFO L225 Difference]: With dead ends: 460 [2023-12-25 23:20:57,381 INFO L226 Difference]: Without dead ends: 304 [2023-12-25 23:20:57,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:20:57,383 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 563 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:20:57,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 651 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:20:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-25 23:20:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 217. [2023-12-25 23:20:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4398148148148149) internal successors, (311), 216 states have internal predecessors, (311), 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) [2023-12-25 23:20:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 311 transitions. [2023-12-25 23:20:57,388 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 311 transitions. Word has length 128 [2023-12-25 23:20:57,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:20:57,388 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 311 transitions. [2023-12-25 23:20:57,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 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) [2023-12-25 23:20:57,388 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 311 transitions. [2023-12-25 23:20:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-25 23:20:57,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:20:57,389 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:20:57,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 23:20:57,389 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:20:57,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:20:57,389 INFO L85 PathProgramCache]: Analyzing trace with hash -434623417, now seen corresponding path program 1 times [2023-12-25 23:20:57,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:20:57,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872808639] [2023-12-25 23:20:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:57,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:20:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:57,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:20:57,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872808639] [2023-12-25 23:20:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872808639] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:20:57,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53904917] [2023-12-25 23:20:57,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:20:57,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:20:57,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:20:57,952 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) [2023-12-25 23:20:57,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 23:20:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:20:58,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-25 23:20:58,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:20:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:58,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:20:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:20:59,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53904917] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:20:59,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:20:59,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 10] total 25 [2023-12-25 23:20:59,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476159143] [2023-12-25 23:20:59,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:20:59,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 23:20:59,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:20:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 23:20:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-12-25 23:20:59,174 INFO L87 Difference]: Start difference. First operand 217 states and 311 transitions. Second operand has 26 states, 26 states have (on average 11.807692307692308) internal successors, (307), 25 states have internal predecessors, (307), 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) [2023-12-25 23:21:00,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:21:00,074 INFO L93 Difference]: Finished difference Result 440 states and 628 transitions. [2023-12-25 23:21:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 23:21:00,074 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.807692307692308) internal successors, (307), 25 states have internal predecessors, (307), 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 129 [2023-12-25 23:21:00,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:21:00,075 INFO L225 Difference]: With dead ends: 440 [2023-12-25 23:21:00,075 INFO L226 Difference]: Without dead ends: 0 [2023-12-25 23:21:00,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 235 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=447, Invalid=1275, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 23:21:00,076 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1384 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 23:21:00,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1384 Valid, 1757 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 23:21:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-25 23:21:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-25 23:21:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:21:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-25 23:21:00,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2023-12-25 23:21:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:21:00,077 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-25 23:21:00,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.807692307692308) internal successors, (307), 25 states have internal predecessors, (307), 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) [2023-12-25 23:21:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-25 23:21:00,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-25 23:21:00,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 23:21:00,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 23:21:00,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:21:00,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-25 23:21:23,534 WARN L293 SmtUtils]: Spent 23.25s on a formula simplification. DAG size of input: 179 DAG size of output: 109 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L268(line 268) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L202(line 202) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L268-2(line 268) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L202-2(line 202) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L268-4(line 268) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L202-4(line 202) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L269(line 269) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L269-2(line 269) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L269-4(line 269) no Hoare annotation was computed. [2023-12-25 23:21:23,701 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2023-12-25 23:21:23,702 INFO L895 garLoopResultBuilder]: At program point L104-2(lines 104 391) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~var_5~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~var_13~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~mask_SORT_135~0#1| 3)) (.cse4 (= |ULTIMATE.start_main_~var_75~0#1| 0))) (or (and (= |ULTIMATE.start_main_~var_41_arg_0~0#1| 1) (= (+ |ULTIMATE.start_main_~next_63_arg_1~0#1| 1) 0) .cse0 (= (+ |ULTIMATE.start_main_~state_14~0#1| 1) 0) .cse1 (= (+ |ULTIMATE.start_main_~var_41_arg_1~0#1| 256) 0) (= (+ |ULTIMATE.start_main_~var_68_arg_1~0#1| 1) 0) .cse2 .cse3 .cse4) (and (= |ULTIMATE.start_main_~state_18~0#1| 0) .cse0 (= |ULTIMATE.start_main_~state_22~0#1| 0) .cse1 (= |ULTIMATE.start_main_~state_6~0#1| 0) .cse2 (= |ULTIMATE.start_main_~state_14~0#1| 1) .cse3 (= |ULTIMATE.start_main_~state_9~0#1| 0) .cse4))) [2023-12-25 23:21:23,702 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2023-12-25 23:21:23,702 INFO L899 garLoopResultBuilder]: For program point L104-3(lines 104 391) no Hoare annotation was computed. [2023-12-25 23:21:23,702 INFO L899 garLoopResultBuilder]: For program point L71-4(line 71) no Hoare annotation was computed. [2023-12-25 23:21:23,702 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-12-25 23:21:23,702 INFO L899 garLoopResultBuilder]: For program point L72-2(line 72) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L72-4(line 72) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L205(line 205) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L139(line 139) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L205-2(line 205) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L139-2(line 139) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L205-4(line 205) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L73-2(line 73) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L139-4(line 139) no Hoare annotation was computed. [2023-12-25 23:21:23,703 INFO L899 garLoopResultBuilder]: For program point L73-4(line 73) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L206-2(line 206) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L173-2(line 173) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L206-4(line 206) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L173-4(line 173) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L74-2(line 74) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L74-4(line 74) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L174(line 174) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L108(line 108) no Hoare annotation was computed. [2023-12-25 23:21:23,704 INFO L899 garLoopResultBuilder]: For program point L174-2(line 174) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L108-2(line 108) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L174-4(line 174) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L75-2(line 75) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L108-4(line 108) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L75-4(line 75) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L142(line 142) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L142-2(line 142) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L76-2(line 76) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L142-4(line 142) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L76-4(line 76) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L77-2(line 77) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L77-4(line 77) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L78(line 78) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L78-2(line 78) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L78-4(line 78) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L79(line 79) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L79-2(line 79) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L79-4(line 79) no Hoare annotation was computed. [2023-12-25 23:21:23,705 INFO L899 garLoopResultBuilder]: For program point L245(line 245) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L245-2(line 245) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L245-4(line 245) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L80-2(line 80) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L80-4(line 80) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L147(line 147) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L147-2(line 147) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L81-2(line 81) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L147-4(line 147) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L81-4(line 81) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L82-2(line 82) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L82-4(line 82) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L83-2(line 83) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L83-4(line 83) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L84(line 84) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L84-2(line 84) no Hoare annotation was computed. [2023-12-25 23:21:23,706 INFO L899 garLoopResultBuilder]: For program point L84-4(line 84) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L184(line 184) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L184-2(line 184) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L184-4(line 184) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L152-2(line 152) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L152-4(line 152) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L254(line 254) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L254-2(line 254) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L254-4(line 254) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L255(line 255) no Hoare annotation was computed. [2023-12-25 23:21:23,707 INFO L899 garLoopResultBuilder]: For program point L255-2(line 255) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L255-4(line 255) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L157(line 157) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L223-2(line 223) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L157-2(line 157) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L223-4(line 223) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L157-4(line 157) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L224(line 224) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L224-2(line 224) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L224-4(line 224) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L292(line 292) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L292-2(line 292) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L292-4(line 292) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L293(line 293) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L227(line 227) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L293-2(line 293) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L227-2(line 227) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L293-4(line 293) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point L227-4(line 227) no Hoare annotation was computed. [2023-12-25 23:21:23,708 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L129(line 129) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L129-2(line 129) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L129-4(line 129) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L164-2(line 164) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L164-4(line 164) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L264(line 264) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L264-2(line 264) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L165(line 165) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L264-4(line 264) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L165-2(line 165) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L165-4(line 165) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L265(line 265) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L199(line 199) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L265-2(line 265) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L199-2(line 199) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L265-4(line 265) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L199-4(line 199) no Hoare annotation was computed. [2023-12-25 23:21:23,709 INFO L899 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2023-12-25 23:21:23,710 INFO L899 garLoopResultBuilder]: For program point L134-2(line 134) no Hoare annotation was computed. [2023-12-25 23:21:23,710 INFO L899 garLoopResultBuilder]: For program point L134-4(line 134) no Hoare annotation was computed. [2023-12-25 23:21:23,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:21:23,715 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 23:21:23,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 11:21:23 BoogieIcfgContainer [2023-12-25 23:21:23,727 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 23:21:23,727 INFO L158 Benchmark]: Toolchain (without parser) took 38752.46ms. Allocated memory was 243.3MB in the beginning and 810.5MB in the end (delta: 567.3MB). Free memory was 196.5MB in the beginning and 731.3MB in the end (delta: -534.8MB). Peak memory consumption was 488.4MB. Max. memory is 8.0GB. [2023-12-25 23:21:23,727 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 23:21:23,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.46ms. Allocated memory is still 243.3MB. Free memory was 196.2MB in the beginning and 174.4MB in the end (delta: 21.8MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-25 23:21:23,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.37ms. Allocated memory is still 243.3MB. Free memory was 174.4MB in the beginning and 158.1MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-25 23:21:23,728 INFO L158 Benchmark]: Boogie Preprocessor took 153.20ms. Allocated memory is still 243.3MB. Free memory was 158.1MB in the beginning and 198.5MB in the end (delta: -40.4MB). Peak memory consumption was 17.2MB. Max. memory is 8.0GB. [2023-12-25 23:21:23,728 INFO L158 Benchmark]: RCFGBuilder took 825.52ms. Allocated memory is still 243.3MB. Free memory was 198.5MB in the beginning and 116.2MB in the end (delta: 82.3MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. [2023-12-25 23:21:23,728 INFO L158 Benchmark]: TraceAbstraction took 37384.00ms. Allocated memory was 243.3MB in the beginning and 810.5MB in the end (delta: 567.3MB). Free memory was 115.7MB in the beginning and 731.3MB in the end (delta: -615.7MB). Peak memory consumption was 407.2MB. Max. memory is 8.0GB. [2023-12-25 23:21:23,729 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 295.46ms. Allocated memory is still 243.3MB. Free memory was 196.2MB in the beginning and 174.4MB in the end (delta: 21.8MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 90.37ms. Allocated memory is still 243.3MB. Free memory was 174.4MB in the beginning and 158.1MB in the end (delta: 16.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 153.20ms. Allocated memory is still 243.3MB. Free memory was 158.1MB in the beginning and 198.5MB in the end (delta: -40.4MB). Peak memory consumption was 17.2MB. Max. memory is 8.0GB. * RCFGBuilder took 825.52ms. Allocated memory is still 243.3MB. Free memory was 198.5MB in the beginning and 116.2MB in the end (delta: 82.3MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. * TraceAbstraction took 37384.00ms. Allocated memory was 243.3MB in the beginning and 810.5MB in the end (delta: 567.3MB). Free memory was 115.7MB in the beginning and 731.3MB in the end (delta: -615.7MB). Peak memory consumption was 407.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 137 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 37.3s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 23.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9413 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9413 mSDsluCounter, 22566 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16579 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2713 IncrementalHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 5987 mSDtfsCounter, 2713 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 713 GetRequests, 516 SyntacticMatches, 5 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=20, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 2171 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 71 HoareAnnotationTreeSize, 1 FormulaSimplifications, 55793112 FormulaSimplificationTreeSizeReduction, 23.3s HoareSimplificationTime, 1 FormulaSimplificationsInter, 21680 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 2516 NumberOfCodeBlocks, 2516 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2618 ConstructedInterpolants, 0 QuantifiedInterpolants, 9430 SizeOfPredicates, 39 NumberOfNonLiveVariables, 2964 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 27 InterpolantComputations, 22 PerfectInterpolantSequences, 323/381 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: (((((((((((var_41_arg_0 == 1) && ((next_63_arg_1 + 1) == 0)) && (var_5 == 0)) && ((state_14 + 1) == 0)) && (var_13 == 1)) && ((var_41_arg_1 + 256) == 0)) && ((var_68_arg_1 + 1) == 0)) && (mask_SORT_1 == 1)) && (mask_SORT_135 == 3)) && (var_75 == 0)) || ((((((((((state_18 == 0) && (var_5 == 0)) && (state_22 == 0)) && (var_13 == 1)) && (state_6 == 0)) && (mask_SORT_1 == 1)) && (state_14 == 1)) && (mask_SORT_135 == 3)) && (state_9 == 0)) && (var_75 == 0))) RESULT: Ultimate proved your program to be correct! [2023-12-25 23:21:23,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...