/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:55:15,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:55:15,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:55:15,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:55:15,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:55:15,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:55:15,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:55:15,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:55:15,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:55:15,253 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:55:15,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:55:15,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:55:15,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:55:15,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:55:15,255 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:55:15,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:55:15,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:55:15,256 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:55:15,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:55:15,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:55:15,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:55:15,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:55:15,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:55:15,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:55:15,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:55:15,258 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:55:15,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:55:15,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:55:15,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:55:15,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:55:15,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:55:15,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:55:15,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:55:15,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:55:15,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:55:15,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:55:15,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:55:15,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:55:15,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:55:15,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:55:15,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:55:15,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:55:15,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:55:15,261 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:55:15,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:55:15,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:55:15,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:55:15,476 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:55:15,476 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:55:15,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32.c [2023-12-15 18:55:16,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:55:17,048 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:55:17,048 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label32.c [2023-12-15 18:55:17,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654a565a4/ff51464b51f4402aa6e17afef219c7da/FLAGbcd94147f [2023-12-15 18:55:17,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654a565a4/ff51464b51f4402aa6e17afef219c7da [2023-12-15 18:55:17,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:55:17,084 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:55:17,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:55:17,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:55:17,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:55:17,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:55:17" (1/1) ... [2023-12-15 18:55:17,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf635aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:17, skipping insertion in model container [2023-12-15 18:55:17,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:55:17" (1/1) ... [2023-12-15 18:55:17,214 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:55:17,376 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label32.c[1533,1546] [2023-12-15 18:55:17,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:55:17,967 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:55:17,981 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label32.c[1533,1546] [2023-12-15 18:55:18,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:55:18,434 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:55:18,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18 WrapperNode [2023-12-15 18:55:18,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:55:18,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:55:18,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:55:18,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:55:18,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:18,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:18,972 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-15 18:55:18,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:55:18,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:55:18,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:55:18,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:55:18,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:18,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,216 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:55:19,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:55:19,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:55:19,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:55:19,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:55:19,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (1/1) ... [2023-12-15 18:55:19,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:55:19,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:55:19,558 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) [2023-12-15 18:55:19,565 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 [2023-12-15 18:55:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:55:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:55:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:55:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:55:19,630 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:55:19,632 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:55:23,291 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:55:23,322 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:55:23,322 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:55:23,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:55:23 BoogieIcfgContainer [2023-12-15 18:55:23,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:55:23,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:55:23,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:55:23,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:55:23,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:55:17" (1/3) ... [2023-12-15 18:55:23,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fefafa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:55:23, skipping insertion in model container [2023-12-15 18:55:23,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:55:18" (2/3) ... [2023-12-15 18:55:23,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fefafa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:55:23, skipping insertion in model container [2023-12-15 18:55:23,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:55:23" (3/3) ... [2023-12-15 18:55:23,327 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label32.c [2023-12-15 18:55:23,338 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:55:23,339 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:55:23,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:55:23,383 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;@741df96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:55:23,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:55:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-15 18:55:23,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:23,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:23,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:23,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash 402648763, now seen corresponding path program 1 times [2023-12-15 18:55:23,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:23,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521878632] [2023-12-15 18:55:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:55:23,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:23,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521878632] [2023-12-15 18:55:23,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521878632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:23,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:23,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:55:23,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630671873] [2023-12-15 18:55:23,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:23,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:23,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:23,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:23,548 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:27,496 INFO L93 Difference]: Finished difference Result 2937 states and 5544 transitions. [2023-12-15 18:55:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:27,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-15 18:55:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:27,527 INFO L225 Difference]: With dead ends: 2937 [2023-12-15 18:55:27,527 INFO L226 Difference]: Without dead ends: 1898 [2023-12-15 18:55:27,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:27,538 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1009 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 3437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:27,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 596 Invalid, 3437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-15 18:55:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-12-15 18:55:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2023-12-15 18:55:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.73784355179704) internal successors, (3288), 1892 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:27,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2023-12-15 18:55:27,627 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 7 [2023-12-15 18:55:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:27,627 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2023-12-15 18:55:27,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:27,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2023-12-15 18:55:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 18:55:27,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:27,629 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:55:27,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:55:27,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:27,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1455001935, now seen corresponding path program 1 times [2023-12-15 18:55:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:27,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529548134] [2023-12-15 18:55:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:27,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:55:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529548134] [2023-12-15 18:55:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529548134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:27,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:55:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927079365] [2023-12-15 18:55:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:27,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:27,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:27,894 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:31,104 INFO L93 Difference]: Finished difference Result 5383 states and 9440 transitions. [2023-12-15 18:55:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:31,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-12-15 18:55:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:31,115 INFO L225 Difference]: With dead ends: 5383 [2023-12-15 18:55:31,115 INFO L226 Difference]: Without dead ends: 3491 [2023-12-15 18:55:31,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:31,119 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:31,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1011 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:55:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-12-15 18:55:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3490. [2023-12-15 18:55:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 1.5385497277156779) internal successors, (5368), 3489 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5368 transitions. [2023-12-15 18:55:31,158 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5368 transitions. Word has length 72 [2023-12-15 18:55:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:31,159 INFO L495 AbstractCegarLoop]: Abstraction has 3490 states and 5368 transitions. [2023-12-15 18:55:31,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5368 transitions. [2023-12-15 18:55:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 18:55:31,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:31,162 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 18:55:31,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:55:31,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:31,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1708998548, now seen corresponding path program 1 times [2023-12-15 18:55:31,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:31,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164999905] [2023-12-15 18:55:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:31,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:55:31,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:31,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164999905] [2023-12-15 18:55:31,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164999905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:31,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:31,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:55:31,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321417129] [2023-12-15 18:55:31,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:31,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:31,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:31,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:31,284 INFO L87 Difference]: Start difference. First operand 3490 states and 5368 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:34,401 INFO L93 Difference]: Finished difference Result 10168 states and 15699 transitions. [2023-12-15 18:55:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:34,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-15 18:55:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:34,418 INFO L225 Difference]: With dead ends: 10168 [2023-12-15 18:55:34,418 INFO L226 Difference]: Without dead ends: 6679 [2023-12-15 18:55:34,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:34,423 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:34,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 845 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:55:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2023-12-15 18:55:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6668. [2023-12-15 18:55:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 1.3752812359382032) internal successors, (9169), 6667 states have internal predecessors, (9169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9169 transitions. [2023-12-15 18:55:34,504 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9169 transitions. Word has length 74 [2023-12-15 18:55:34,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:34,504 INFO L495 AbstractCegarLoop]: Abstraction has 6668 states and 9169 transitions. [2023-12-15 18:55:34,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:34,505 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9169 transitions. [2023-12-15 18:55:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-15 18:55:34,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:34,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:34,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:55:34,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:34,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -162554722, now seen corresponding path program 1 times [2023-12-15 18:55:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52382184] [2023-12-15 18:55:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:34,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:55:34,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:34,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52382184] [2023-12-15 18:55:34,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52382184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:34,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:34,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:55:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738630271] [2023-12-15 18:55:34,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:34,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:34,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:34,595 INFO L87 Difference]: Start difference. First operand 6668 states and 9169 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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) [2023-12-15 18:55:37,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:37,556 INFO L93 Difference]: Finished difference Result 19628 states and 27005 transitions. [2023-12-15 18:55:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:37,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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 118 [2023-12-15 18:55:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:37,599 INFO L225 Difference]: With dead ends: 19628 [2023-12-15 18:55:37,599 INFO L226 Difference]: Without dead ends: 12961 [2023-12-15 18:55:37,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:37,617 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 926 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:37,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 1998 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:55:37,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2023-12-15 18:55:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 12956. [2023-12-15 18:55:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12956 states, 12955 states have (on average 1.2725588575839444) internal successors, (16486), 12955 states have internal predecessors, (16486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 16486 transitions. [2023-12-15 18:55:37,782 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 16486 transitions. Word has length 118 [2023-12-15 18:55:37,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:37,783 INFO L495 AbstractCegarLoop]: Abstraction has 12956 states and 16486 transitions. [2023-12-15 18:55:37,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 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) [2023-12-15 18:55:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 16486 transitions. [2023-12-15 18:55:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-15 18:55:37,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:37,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:37,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:55:37,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:37,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1533377951, now seen corresponding path program 1 times [2023-12-15 18:55:37,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:37,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042562435] [2023-12-15 18:55:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:37,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:55:38,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042562435] [2023-12-15 18:55:38,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042562435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:38,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:38,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:55:38,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128276422] [2023-12-15 18:55:38,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:38,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:38,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:38,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:38,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:38,033 INFO L87 Difference]: Start difference. First operand 12956 states and 16486 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:40,270 INFO L93 Difference]: Finished difference Result 22764 states and 29539 transitions. [2023-12-15 18:55:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:40,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 [2023-12-15 18:55:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:40,301 INFO L225 Difference]: With dead ends: 22764 [2023-12-15 18:55:40,301 INFO L226 Difference]: Without dead ends: 12178 [2023-12-15 18:55:40,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:40,312 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:40,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1190 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 18:55:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12178 states. [2023-12-15 18:55:40,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12178 to 12169. [2023-12-15 18:55:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12169 states, 12168 states have (on average 1.2884615384615385) internal successors, (15678), 12168 states have internal predecessors, (15678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12169 states to 12169 states and 15678 transitions. [2023-12-15 18:55:40,485 INFO L78 Accepts]: Start accepts. Automaton has 12169 states and 15678 transitions. Word has length 123 [2023-12-15 18:55:40,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:40,486 INFO L495 AbstractCegarLoop]: Abstraction has 12169 states and 15678 transitions. [2023-12-15 18:55:40,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 12169 states and 15678 transitions. [2023-12-15 18:55:40,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-15 18:55:40,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:40,491 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:40,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:55:40,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:40,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash 703309834, now seen corresponding path program 1 times [2023-12-15 18:55:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:40,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898869391] [2023-12-15 18:55:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:40,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:55:40,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:40,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898869391] [2023-12-15 18:55:40,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898869391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:40,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:40,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:55:40,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080459567] [2023-12-15 18:55:40,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:40,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:40,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:40,631 INFO L87 Difference]: Start difference. First operand 12169 states and 15678 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:43,513 INFO L93 Difference]: Finished difference Result 35375 states and 45655 transitions. [2023-12-15 18:55:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 147 [2023-12-15 18:55:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:43,580 INFO L225 Difference]: With dead ends: 35375 [2023-12-15 18:55:43,580 INFO L226 Difference]: Without dead ends: 23207 [2023-12-15 18:55:43,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:43,601 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 780 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:43,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1234 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:55:43,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23207 states. [2023-12-15 18:55:43,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23207 to 22403. [2023-12-15 18:55:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22403 states, 22402 states have (on average 1.193420230336577) internal successors, (26735), 22402 states have internal predecessors, (26735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22403 states to 22403 states and 26735 transitions. [2023-12-15 18:55:43,959 INFO L78 Accepts]: Start accepts. Automaton has 22403 states and 26735 transitions. Word has length 147 [2023-12-15 18:55:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:43,959 INFO L495 AbstractCegarLoop]: Abstraction has 22403 states and 26735 transitions. [2023-12-15 18:55:43,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 22403 states and 26735 transitions. [2023-12-15 18:55:43,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-12-15 18:55:43,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:43,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:43,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:55:43,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:43,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1008948292, now seen corresponding path program 1 times [2023-12-15 18:55:43,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:43,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281983078] [2023-12-15 18:55:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-15 18:55:44,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:44,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281983078] [2023-12-15 18:55:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281983078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:44,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:44,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:55:44,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528627639] [2023-12-15 18:55:44,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:44,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:44,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:44,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:44,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:44,233 INFO L87 Difference]: Start difference. First operand 22403 states and 26735 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:46,578 INFO L93 Difference]: Finished difference Result 44018 states and 52672 transitions. [2023-12-15 18:55:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:46,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2023-12-15 18:55:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:46,614 INFO L225 Difference]: With dead ends: 44018 [2023-12-15 18:55:46,614 INFO L226 Difference]: Without dead ends: 22403 [2023-12-15 18:55:46,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:46,634 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 2509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:46,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1194 Invalid, 2509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 18:55:46,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22403 states. [2023-12-15 18:55:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22403 to 22403. [2023-12-15 18:55:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22403 states, 22402 states have (on average 1.1931970359789303) internal successors, (26730), 22402 states have internal predecessors, (26730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22403 states to 22403 states and 26730 transitions. [2023-12-15 18:55:46,854 INFO L78 Accepts]: Start accepts. Automaton has 22403 states and 26730 transitions. Word has length 236 [2023-12-15 18:55:46,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:46,854 INFO L495 AbstractCegarLoop]: Abstraction has 22403 states and 26730 transitions. [2023-12-15 18:55:46,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:46,854 INFO L276 IsEmpty]: Start isEmpty. Operand 22403 states and 26730 transitions. [2023-12-15 18:55:46,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-15 18:55:46,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:46,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:46,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:55:46,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:46,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash -547367669, now seen corresponding path program 1 times [2023-12-15 18:55:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:46,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364800780] [2023-12-15 18:55:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:46,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:55:46,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364800780] [2023-12-15 18:55:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364800780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:46,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:46,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:55:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839615019] [2023-12-15 18:55:46,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:46,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:46,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:46,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:46,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:46,975 INFO L87 Difference]: Start difference. First operand 22403 states and 26730 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:50,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:50,060 INFO L93 Difference]: Finished difference Result 55045 states and 66947 transitions. [2023-12-15 18:55:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:50,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2023-12-15 18:55:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:50,091 INFO L225 Difference]: With dead ends: 55045 [2023-12-15 18:55:50,091 INFO L226 Difference]: Without dead ends: 33430 [2023-12-15 18:55:50,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:50,099 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 881 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:50,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 926 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:55:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33430 states. [2023-12-15 18:55:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33430 to 32634. [2023-12-15 18:55:50,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32634 states, 32633 states have (on average 1.1761407164526707) internal successors, (38381), 32633 states have internal predecessors, (38381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32634 states to 32634 states and 38381 transitions. [2023-12-15 18:55:50,374 INFO L78 Accepts]: Start accepts. Automaton has 32634 states and 38381 transitions. Word has length 243 [2023-12-15 18:55:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:50,374 INFO L495 AbstractCegarLoop]: Abstraction has 32634 states and 38381 transitions. [2023-12-15 18:55:50,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 32634 states and 38381 transitions. [2023-12-15 18:55:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-15 18:55:50,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:50,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:50,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:55:50,377 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:50,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:50,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1969773675, now seen corresponding path program 1 times [2023-12-15 18:55:50,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:50,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261044834] [2023-12-15 18:55:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:50,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-15 18:55:50,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261044834] [2023-12-15 18:55:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261044834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:50,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:50,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:55:50,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632591671] [2023-12-15 18:55:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:50,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:50,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:50,531 INFO L87 Difference]: Start difference. First operand 32634 states and 38381 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:53,245 INFO L93 Difference]: Finished difference Result 76293 states and 91192 transitions. [2023-12-15 18:55:53,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:53,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 298 [2023-12-15 18:55:53,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:53,298 INFO L225 Difference]: With dead ends: 76293 [2023-12-15 18:55:53,298 INFO L226 Difference]: Without dead ends: 44447 [2023-12-15 18:55:53,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:53,324 INFO L413 NwaCegarLoop]: 1804 mSDtfsCounter, 856 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:53,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1947 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:55:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44447 states. [2023-12-15 18:55:53,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44447 to 43656. [2023-12-15 18:55:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43656 states, 43655 states have (on average 1.1516664757759707) internal successors, (50276), 43655 states have internal predecessors, (50276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43656 states to 43656 states and 50276 transitions. [2023-12-15 18:55:53,732 INFO L78 Accepts]: Start accepts. Automaton has 43656 states and 50276 transitions. Word has length 298 [2023-12-15 18:55:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:53,732 INFO L495 AbstractCegarLoop]: Abstraction has 43656 states and 50276 transitions. [2023-12-15 18:55:53,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 43656 states and 50276 transitions. [2023-12-15 18:55:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-15 18:55:53,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:53,736 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:53,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:55:53,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:53,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1348846708, now seen corresponding path program 1 times [2023-12-15 18:55:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:53,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442560891] [2023-12-15 18:55:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:53,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 140 proven. 113 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:55:55,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:55,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442560891] [2023-12-15 18:55:55,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442560891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:55:55,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458601014] [2023-12-15 18:55:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:55,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:55:55,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:55:55,029 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) [2023-12-15 18:55:55,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:55:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:55,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:55:55,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:55:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-15 18:55:55,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:55:55,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458601014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:55,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:55:55,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:55:55,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478987450] [2023-12-15 18:55:55,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:55,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:55,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:55,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:55,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:55:55,261 INFO L87 Difference]: Start difference. First operand 43656 states and 50276 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:55:58,043 INFO L93 Difference]: Finished difference Result 86515 states and 99751 transitions. [2023-12-15 18:55:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:55:58,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 313 [2023-12-15 18:55:58,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:55:58,087 INFO L225 Difference]: With dead ends: 86515 [2023-12-15 18:55:58,087 INFO L226 Difference]: Without dead ends: 43647 [2023-12-15 18:55:58,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:55:58,111 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1075 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:55:58,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 816 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-15 18:55:58,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43647 states. [2023-12-15 18:55:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43647 to 43646. [2023-12-15 18:55:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43646 states, 43645 states have (on average 1.1132775804788635) internal successors, (48589), 43645 states have internal predecessors, (48589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43646 states to 43646 states and 48589 transitions. [2023-12-15 18:55:58,713 INFO L78 Accepts]: Start accepts. Automaton has 43646 states and 48589 transitions. Word has length 313 [2023-12-15 18:55:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:55:58,713 INFO L495 AbstractCegarLoop]: Abstraction has 43646 states and 48589 transitions. [2023-12-15 18:55:58,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:55:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 43646 states and 48589 transitions. [2023-12-15 18:55:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-15 18:55:58,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:55:58,737 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:55:58,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:55:58,942 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,SelfDestructingSolverStorable9 [2023-12-15 18:55:58,943 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:55:58,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:55:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash -5987741, now seen corresponding path program 1 times [2023-12-15 18:55:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:55:58,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215168748] [2023-12-15 18:55:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:55:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:55:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:55:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-15 18:55:59,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:55:59,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215168748] [2023-12-15 18:55:59,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215168748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:55:59,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:55:59,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:55:59,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678245454] [2023-12-15 18:55:59,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:55:59,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:55:59,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:55:59,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:55:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:55:59,363 INFO L87 Difference]: Start difference. First operand 43646 states and 48589 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:01,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:01,892 INFO L93 Difference]: Finished difference Result 86502 states and 96384 transitions. [2023-12-15 18:56:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:01,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 332 [2023-12-15 18:56:01,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:01,937 INFO L225 Difference]: With dead ends: 86502 [2023-12-15 18:56:01,937 INFO L226 Difference]: Without dead ends: 43644 [2023-12-15 18:56:01,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:01,969 INFO L413 NwaCegarLoop]: 1340 mSDtfsCounter, 1194 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:01,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 1418 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:56:01,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43644 states. [2023-12-15 18:56:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43644 to 43643. [2023-12-15 18:56:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43643 states, 43642 states have (on average 1.0865908986755877) internal successors, (47421), 43642 states have internal predecessors, (47421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43643 states to 43643 states and 47421 transitions. [2023-12-15 18:56:02,524 INFO L78 Accepts]: Start accepts. Automaton has 43643 states and 47421 transitions. Word has length 332 [2023-12-15 18:56:02,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:02,524 INFO L495 AbstractCegarLoop]: Abstraction has 43643 states and 47421 transitions. [2023-12-15 18:56:02,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 43643 states and 47421 transitions. [2023-12-15 18:56:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-12-15 18:56:02,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:02,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:02,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:56:02,529 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:02,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1403559186, now seen corresponding path program 1 times [2023-12-15 18:56:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:02,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872568463] [2023-12-15 18:56:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:02,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-15 18:56:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:02,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872568463] [2023-12-15 18:56:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872568463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:02,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:02,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:56:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471969376] [2023-12-15 18:56:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:02,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:56:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:56:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:56:02,892 INFO L87 Difference]: Start difference. First operand 43643 states and 47421 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:08,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:08,040 INFO L93 Difference]: Finished difference Result 150459 states and 163809 transitions. [2023-12-15 18:56:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:56:08,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2023-12-15 18:56:08,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:08,163 INFO L225 Difference]: With dead ends: 150459 [2023-12-15 18:56:08,163 INFO L226 Difference]: Without dead ends: 107604 [2023-12-15 18:56:08,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:56:08,185 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1704 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 6637 mSolverCounterSat, 1034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 7671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1034 IncrementalHoareTripleChecker+Valid, 6637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:08,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 801 Invalid, 7671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1034 Valid, 6637 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-15 18:56:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107604 states. [2023-12-15 18:56:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107604 to 104325. [2023-12-15 18:56:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104325 states, 104324 states have (on average 1.0794352210421378) internal successors, (112611), 104324 states have internal predecessors, (112611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104325 states to 104325 states and 112611 transitions. [2023-12-15 18:56:09,433 INFO L78 Accepts]: Start accepts. Automaton has 104325 states and 112611 transitions. Word has length 355 [2023-12-15 18:56:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:09,434 INFO L495 AbstractCegarLoop]: Abstraction has 104325 states and 112611 transitions. [2023-12-15 18:56:09,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 104325 states and 112611 transitions. [2023-12-15 18:56:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2023-12-15 18:56:09,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:09,449 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:09,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:56:09,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:09,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash 170625098, now seen corresponding path program 1 times [2023-12-15 18:56:09,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:09,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787716628] [2023-12-15 18:56:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:09,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 309 proven. 113 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-12-15 18:56:10,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:10,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787716628] [2023-12-15 18:56:10,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787716628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:56:10,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768376260] [2023-12-15 18:56:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:10,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:56:10,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:56:10,545 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) [2023-12-15 18:56:10,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:56:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:10,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:56:10,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:56:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-15 18:56:10,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:56:10,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768376260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:10,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:56:10,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:56:10,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30575265] [2023-12-15 18:56:10,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:10,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:10,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:10,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:56:10,701 INFO L87 Difference]: Start difference. First operand 104325 states and 112611 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:14,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:56:14,101 INFO L93 Difference]: Finished difference Result 233051 states and 253447 transitions. [2023-12-15 18:56:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:14,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 398 [2023-12-15 18:56:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:56:14,321 INFO L225 Difference]: With dead ends: 233051 [2023-12-15 18:56:14,321 INFO L226 Difference]: Without dead ends: 129514 [2023-12-15 18:56:14,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:56:14,403 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 980 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:14,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 878 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:56:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129514 states. [2023-12-15 18:56:15,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129514 to 127921. [2023-12-15 18:56:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127921 states, 127920 states have (on average 1.0841932457786116) internal successors, (138690), 127920 states have internal predecessors, (138690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127921 states to 127921 states and 138690 transitions. [2023-12-15 18:56:16,117 INFO L78 Accepts]: Start accepts. Automaton has 127921 states and 138690 transitions. Word has length 398 [2023-12-15 18:56:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:56:16,118 INFO L495 AbstractCegarLoop]: Abstraction has 127921 states and 138690 transitions. [2023-12-15 18:56:16,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:56:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 127921 states and 138690 transitions. [2023-12-15 18:56:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2023-12-15 18:56:16,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:56:16,155 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:16,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:56:16,360 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,SelfDestructingSolverStorable12 [2023-12-15 18:56:16,361 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:56:16,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:56:16,362 INFO L85 PathProgramCache]: Analyzing trace with hash 918814596, now seen corresponding path program 1 times [2023-12-15 18:56:16,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:56:16,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525215340] [2023-12-15 18:56:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:56:16,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:56:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:56:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-15 18:56:16,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:56:16,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525215340] [2023-12-15 18:56:16,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525215340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:56:16,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:56:16,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:56:16,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037001866] [2023-12-15 18:56:16,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:56:16,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:56:16,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:56:16,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:56:16,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:16,899 INFO L87 Difference]: Start difference. First operand 127921 states and 138690 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 18:56:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:56:18,048 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:56:18,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:56:18,049 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 227 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:56:18,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 709 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:56:18,050 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:56:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:56:18,051 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (127921states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (23734 states constructed, input type IntersectNwa). [2023-12-15 18:56:18,054 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:56:18,055 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:56:18,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:56:18 BoogieIcfgContainer [2023-12-15 18:56:18,057 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:56:18,057 INFO L158 Benchmark]: Toolchain (without parser) took 60973.43ms. Allocated memory was 293.6MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 224.0MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 18:56:18,057 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 228.6MB. Free memory is still 178.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:56:18,057 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1350.25ms. Allocated memory is still 293.6MB. Free memory was 223.9MB in the beginning and 202.1MB in the end (delta: 21.8MB). Peak memory consumption was 160.8MB. Max. memory is 8.0GB. [2023-12-15 18:56:18,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 537.33ms. Allocated memory was 293.6MB in the beginning and 518.0MB in the end (delta: 224.4MB). Free memory was 202.1MB in the beginning and 371.5MB in the end (delta: -169.4MB). Peak memory consumption was 102.7MB. Max. memory is 8.0GB. [2023-12-15 18:56:18,058 INFO L158 Benchmark]: Boogie Preprocessor took 560.47ms. Allocated memory was 518.0MB in the beginning and 1.0GB in the end (delta: 503.3MB). Free memory was 371.5MB in the beginning and 843.9MB in the end (delta: -472.4MB). Peak memory consumption was 117.4MB. Max. memory is 8.0GB. [2023-12-15 18:56:18,058 INFO L158 Benchmark]: RCFGBuilder took 3787.89ms. Allocated memory was 1.0GB in the beginning and 1.5GB in the end (delta: 505.4MB). Free memory was 843.9MB in the beginning and 1.3GB in the end (delta: -464.0MB). Peak memory consumption was 254.3MB. Max. memory is 8.0GB. [2023-12-15 18:56:18,058 INFO L158 Benchmark]: TraceAbstraction took 54733.17ms. Allocated memory was 1.5GB in the beginning and 4.8GB in the end (delta: 3.3GB). Free memory was 1.3GB in the beginning and 3.4GB in the end (delta: -2.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-15 18:56:18,059 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 228.6MB. Free memory is still 178.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1350.25ms. Allocated memory is still 293.6MB. Free memory was 223.9MB in the beginning and 202.1MB in the end (delta: 21.8MB). Peak memory consumption was 160.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 537.33ms. Allocated memory was 293.6MB in the beginning and 518.0MB in the end (delta: 224.4MB). Free memory was 202.1MB in the beginning and 371.5MB in the end (delta: -169.4MB). Peak memory consumption was 102.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 560.47ms. Allocated memory was 518.0MB in the beginning and 1.0GB in the end (delta: 503.3MB). Free memory was 371.5MB in the beginning and 843.9MB in the end (delta: -472.4MB). Peak memory consumption was 117.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3787.89ms. Allocated memory was 1.0GB in the beginning and 1.5GB in the end (delta: 505.4MB). Free memory was 843.9MB in the beginning and 1.3GB in the end (delta: -464.0MB). Peak memory consumption was 254.3MB. Max. memory is 8.0GB. * TraceAbstraction took 54733.17ms. Allocated memory was 1.5GB in the beginning and 4.8GB in the end (delta: 3.3GB). Free memory was 1.3GB in the beginning and 3.4GB in the end (delta: -2.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 46). Cancelled while NwaCegarLoop was constructing difference of abstraction (127921states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (23734 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.7s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 42.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12959 SdHoareTripleChecker+Valid, 38.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12959 mSDsluCounter, 15563 SdHoareTripleChecker+Invalid, 32.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1848 mSDsCounter, 8505 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37954 IncrementalHoareTripleChecker+Invalid, 46459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8505 mSolverCounterUnsat, 13715 mSDtfsCounter, 37954 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 756 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127921occurred in iteration=13, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 7296 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 3894 NumberOfCodeBlocks, 3894 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3878 ConstructedInterpolants, 0 QuantifiedInterpolants, 14082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1016 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 16 InterpolantComputations, 14 PerfectInterpolantSequences, 3414/3640 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown