/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/Problem15_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:01:14,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:01:14,257 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 19:01:14,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:01:14,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:01:14,302 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:01:14,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:01:14,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:01:14,316 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:01:14,319 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:01:14,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:01:14,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:01:14,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:01:14,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:01:14,322 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:01:14,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:01:14,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:01:14,322 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:01:14,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:01:14,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:01:14,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:01:14,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:01:14,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:01:14,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:01:14,324 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:01:14,324 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:01:14,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:01:14,325 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:01:14,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:01:14,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:01:14,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:01:14,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:01:14,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:01:14,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:01:14,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:01:14,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:01:14,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:01:14,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:01:14,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:01:14,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:01:14,327 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:01:14,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:01:14,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:01:14,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:01:14,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:01:14,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:01:14,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:01:14,650 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:01:14,650 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:01:14,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2023-12-15 19:01:15,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:01:15,960 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:01:15,961 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2023-12-15 19:01:15,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9323ede/47c734f6d75745fbab7a946f47769c5c/FLAGc4aa7e0f3 [2023-12-15 19:01:15,989 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9323ede/47c734f6d75745fbab7a946f47769c5c [2023-12-15 19:01:15,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:01:15,992 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:01:15,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:01:15,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:01:15,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:01:15,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:01:15" (1/1) ... [2023-12-15 19:01:15,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371f89de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:15, skipping insertion in model container [2023-12-15 19:01:15,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:01:15" (1/1) ... [2023-12-15 19:01:16,060 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:01:16,251 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/Problem15_label17.c[7664,7677] [2023-12-15 19:01:16,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:01:16,565 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:01:16,592 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/Problem15_label17.c[7664,7677] [2023-12-15 19:01:16,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:01:16,818 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:01:16,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16 WrapperNode [2023-12-15 19:01:16,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:01:16,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:01:16,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:01:16,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:01:16,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:16,855 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:16,967 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2023-12-15 19:01:16,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:01:16,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:01:16,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:01:16,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:01:16,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:16,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:16,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:17,153 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 19:01:17,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:17,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:17,211 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:17,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:17,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:17,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:17,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:01:17,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:01:17,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:01:17,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:01:17,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (1/1) ... [2023-12-15 19:01:17,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:01:17,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:17,308 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 19:01:17,329 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 19:01:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:01:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:01:17,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:01:17,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:01:17,384 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:01:17,386 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:01:19,386 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:01:19,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:01:19,430 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:01:19,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:01:19 BoogieIcfgContainer [2023-12-15 19:01:19,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:01:19,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:01:19,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:01:19,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:01:19,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:01:15" (1/3) ... [2023-12-15 19:01:19,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ec572e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:01:19, skipping insertion in model container [2023-12-15 19:01:19,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:01:16" (2/3) ... [2023-12-15 19:01:19,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ec572e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:01:19, skipping insertion in model container [2023-12-15 19:01:19,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:01:19" (3/3) ... [2023-12-15 19:01:19,437 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label17.c [2023-12-15 19:01:19,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:01:19,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:01:19,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:01:19,488 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;@26336488, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:01:19,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:01:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states 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 19:01:19,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 19:01:19,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:19,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:19,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:19,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1845176167, now seen corresponding path program 1 times [2023-12-15 19:01:19,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:19,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609045886] [2023-12-15 19:01:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:19,662 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 19:01:19,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:19,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609045886] [2023-12-15 19:01:19,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609045886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:19,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:19,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876939637] [2023-12-15 19:01:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:19,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:01:19,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:01:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:01:19,697 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 19:01:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:19,751 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2023-12-15 19:01:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:01:19,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-15 19:01:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:19,771 INFO L225 Difference]: With dead ends: 723 [2023-12-15 19:01:19,771 INFO L226 Difference]: Without dead ends: 360 [2023-12-15 19:01:19,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:01:19,779 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:19,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:01:19,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-15 19:01:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-12-15 19:01:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 19:01:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2023-12-15 19:01:19,832 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 62 [2023-12-15 19:01:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:19,832 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2023-12-15 19:01:19,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 19:01:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2023-12-15 19:01:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 19:01:19,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:19,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:19,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:01:19,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:19,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash 974780075, now seen corresponding path program 1 times [2023-12-15 19:01:19,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:19,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524726228] [2023-12-15 19:01:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:19,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:20,020 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 19:01:20,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:20,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524726228] [2023-12-15 19:01:20,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524726228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:20,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:20,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:20,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540821575] [2023-12-15 19:01:20,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:20,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:20,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:20,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:20,028 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 19:01:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:21,701 INFO L93 Difference]: Finished difference Result 1046 states and 1824 transitions. [2023-12-15 19:01:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-15 19:01:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:21,704 INFO L225 Difference]: With dead ends: 1046 [2023-12-15 19:01:21,704 INFO L226 Difference]: Without dead ends: 687 [2023-12-15 19:01:21,705 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 19:01:21,705 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 274 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:21,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 193 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:01:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-12-15 19:01:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 679. [2023-12-15 19:01:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.6106194690265487) internal successors, (1092), 678 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 19:01:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1092 transitions. [2023-12-15 19:01:21,729 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1092 transitions. Word has length 62 [2023-12-15 19:01:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:21,729 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1092 transitions. [2023-12-15 19:01:21,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 19:01:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1092 transitions. [2023-12-15 19:01:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 19:01:21,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:21,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:01:21,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:01:21,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:21,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1648054715, now seen corresponding path program 1 times [2023-12-15 19:01:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:21,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097655349] [2023-12-15 19:01:21,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:21,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:21,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:21,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097655349] [2023-12-15 19:01:21,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097655349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:21,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:21,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:21,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090297400] [2023-12-15 19:01:21,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:21,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:21,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:21,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:21,944 INFO L87 Difference]: Start difference. First operand 679 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 19:01:23,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:23,177 INFO L93 Difference]: Finished difference Result 1963 states and 3170 transitions. [2023-12-15 19:01:23,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:23,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-15 19:01:23,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:23,181 INFO L225 Difference]: With dead ends: 1963 [2023-12-15 19:01:23,181 INFO L226 Difference]: Without dead ends: 1285 [2023-12-15 19:01:23,182 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 19:01:23,183 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 282 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:23,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 358 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:23,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-15 19:01:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1280. [2023-12-15 19:01:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3956215793588742) internal successors, (1785), 1279 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states 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 19:01:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1785 transitions. [2023-12-15 19:01:23,219 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1785 transitions. Word has length 130 [2023-12-15 19:01:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:23,225 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1785 transitions. [2023-12-15 19:01:23,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 19:01:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1785 transitions. [2023-12-15 19:01:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-15 19:01:23,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:23,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:01:23,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:01:23,232 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:23,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:23,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2000410545, now seen corresponding path program 1 times [2023-12-15 19:01:23,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:23,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622446677] [2023-12-15 19:01:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:23,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:23,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622446677] [2023-12-15 19:01:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622446677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:23,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:23,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076358151] [2023-12-15 19:01:23,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:23,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:23,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:23,556 INFO L87 Difference]: Start difference. First operand 1280 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 19:01:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:24,854 INFO L93 Difference]: Finished difference Result 2858 states and 3904 transitions. [2023-12-15 19:01:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:24,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 138 [2023-12-15 19:01:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:24,859 INFO L225 Difference]: With dead ends: 2858 [2023-12-15 19:01:24,859 INFO L226 Difference]: Without dead ends: 1579 [2023-12-15 19:01:24,864 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 19:01:24,866 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 225 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:24,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 357 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:01:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-15 19:01:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1579. [2023-12-15 19:01:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 1.3244613434727504) internal successors, (2090), 1578 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states 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 19:01:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2090 transitions. [2023-12-15 19:01:24,890 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2090 transitions. Word has length 138 [2023-12-15 19:01:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:24,890 INFO L495 AbstractCegarLoop]: Abstraction has 1579 states and 2090 transitions. [2023-12-15 19:01:24,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 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 19:01:24,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2090 transitions. [2023-12-15 19:01:24,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-15 19:01:24,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:24,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:24,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:01:24,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:24,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:24,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1413902896, now seen corresponding path program 1 times [2023-12-15 19:01:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:24,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651486647] [2023-12-15 19:01:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:24,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-15 19:01:25,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651486647] [2023-12-15 19:01:25,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651486647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:25,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:25,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036653279] [2023-12-15 19:01:25,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:25,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:25,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:25,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:25,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:25,077 INFO L87 Difference]: Start difference. First operand 1579 states and 2090 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 19:01:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:26,444 INFO L93 Difference]: Finished difference Result 4064 states and 5550 transitions. [2023-12-15 19:01:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:26,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 229 [2023-12-15 19:01:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:26,452 INFO L225 Difference]: With dead ends: 4064 [2023-12-15 19:01:26,452 INFO L226 Difference]: Without dead ends: 2785 [2023-12-15 19:01:26,453 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 19:01:26,454 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 265 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:26,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 634 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:01:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2023-12-15 19:01:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2785. [2023-12-15 19:01:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2784 states have (on average 1.2205459770114941) internal successors, (3398), 2784 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states 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 19:01:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3398 transitions. [2023-12-15 19:01:26,491 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3398 transitions. Word has length 229 [2023-12-15 19:01:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:26,492 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 3398 transitions. [2023-12-15 19:01:26,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 19:01:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3398 transitions. [2023-12-15 19:01:26,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-15 19:01:26,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:26,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:26,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:01:26,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:26,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:26,495 INFO L85 PathProgramCache]: Analyzing trace with hash 300759004, now seen corresponding path program 1 times [2023-12-15 19:01:26,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:26,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51922535] [2023-12-15 19:01:26,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:26,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-12-15 19:01:26,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:26,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51922535] [2023-12-15 19:01:26,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51922535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:26,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:26,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:01:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006710507] [2023-12-15 19:01:26,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:26,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:26,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:26,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:26,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:26,658 INFO L87 Difference]: Start difference. First operand 2785 states and 3398 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 19:01:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:27,924 INFO L93 Difference]: Finished difference Result 6471 states and 8163 transitions. [2023-12-15 19:01:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:27,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 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 235 [2023-12-15 19:01:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:27,935 INFO L225 Difference]: With dead ends: 6471 [2023-12-15 19:01:27,935 INFO L226 Difference]: Without dead ends: 3986 [2023-12-15 19:01:27,939 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 19:01:27,941 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 220 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:27,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 362 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2023-12-15 19:01:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3685. [2023-12-15 19:01:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 3684 states have (on average 1.1959826275787189) internal successors, (4406), 3684 states have internal predecessors, (4406), 0 states have call successors, (0), 0 states 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 19:01:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 4406 transitions. [2023-12-15 19:01:27,998 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 4406 transitions. Word has length 235 [2023-12-15 19:01:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:27,998 INFO L495 AbstractCegarLoop]: Abstraction has 3685 states and 4406 transitions. [2023-12-15 19:01:27,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 19:01:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 4406 transitions. [2023-12-15 19:01:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-12-15 19:01:28,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:28,001 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:28,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:01:28,001 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:28,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2109130330, now seen corresponding path program 1 times [2023-12-15 19:01:28,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:28,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73297436] [2023-12-15 19:01:28,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:28,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:28,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:28,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73297436] [2023-12-15 19:01:28,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73297436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:28,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:28,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:28,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606898615] [2023-12-15 19:01:28,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:28,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:28,265 INFO L87 Difference]: Start difference. First operand 3685 states and 4406 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 19:01:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:29,517 INFO L93 Difference]: Finished difference Result 8278 states and 10189 transitions. [2023-12-15 19:01:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:29,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 344 [2023-12-15 19:01:29,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:29,529 INFO L225 Difference]: With dead ends: 8278 [2023-12-15 19:01:29,529 INFO L226 Difference]: Without dead ends: 4893 [2023-12-15 19:01:29,533 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 19:01:29,536 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 267 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:29,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 600 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2023-12-15 19:01:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4591. [2023-12-15 19:01:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4591 states, 4590 states have (on average 1.1840958605664489) internal successors, (5435), 4590 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states 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 19:01:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 5435 transitions. [2023-12-15 19:01:29,599 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 5435 transitions. Word has length 344 [2023-12-15 19:01:29,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:29,600 INFO L495 AbstractCegarLoop]: Abstraction has 4591 states and 5435 transitions. [2023-12-15 19:01:29,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 19:01:29,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 5435 transitions. [2023-12-15 19:01:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-15 19:01:29,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:29,603 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:29,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:01:29,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:29,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2070403493, now seen corresponding path program 1 times [2023-12-15 19:01:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621034697] [2023-12-15 19:01:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-15 19:01:29,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:29,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621034697] [2023-12-15 19:01:29,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621034697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:29,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:29,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882826789] [2023-12-15 19:01:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:29,893 INFO L87 Difference]: Start difference. First operand 4591 states and 5435 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 19:01:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:31,158 INFO L93 Difference]: Finished difference Result 10078 states and 12233 transitions. [2023-12-15 19:01:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:31,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 349 [2023-12-15 19:01:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:31,172 INFO L225 Difference]: With dead ends: 10078 [2023-12-15 19:01:31,172 INFO L226 Difference]: Without dead ends: 5787 [2023-12-15 19:01:31,177 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 19:01:31,179 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 265 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:31,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 616 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2023-12-15 19:01:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5783. [2023-12-15 19:01:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5782 states have (on average 1.166378415773089) internal successors, (6744), 5782 states have internal predecessors, (6744), 0 states have call successors, (0), 0 states 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 19:01:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 6744 transitions. [2023-12-15 19:01:31,244 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 6744 transitions. Word has length 349 [2023-12-15 19:01:31,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:31,245 INFO L495 AbstractCegarLoop]: Abstraction has 5783 states and 6744 transitions. [2023-12-15 19:01:31,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 19:01:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 6744 transitions. [2023-12-15 19:01:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-12-15 19:01:31,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:31,251 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:01:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:01:31,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:31,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1984567859, now seen corresponding path program 1 times [2023-12-15 19:01:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:31,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857363511] [2023-12-15 19:01:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 426 proven. 39 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-15 19:01:31,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:31,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857363511] [2023-12-15 19:01:31,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857363511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:31,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688764815] [2023-12-15 19:01:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:31,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:31,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:31,774 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 19:01:31,780 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 19:01:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:31,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:31,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-15 19:01:32,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:32,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688764815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:32,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:32,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:32,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410780443] [2023-12-15 19:01:32,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:32,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:32,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:32,184 INFO L87 Difference]: Start difference. First operand 5783 states and 6744 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 19:01:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:33,437 INFO L93 Difference]: Finished difference Result 14555 states and 17043 transitions. [2023-12-15 19:01:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:33,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 513 [2023-12-15 19:01:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:33,458 INFO L225 Difference]: With dead ends: 14555 [2023-12-15 19:01:33,458 INFO L226 Difference]: Without dead ends: 9072 [2023-12-15 19:01:33,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:33,464 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 147 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:33,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 313 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2023-12-15 19:01:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 7577. [2023-12-15 19:01:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7577 states, 7576 states have (on average 1.148363252375924) internal successors, (8700), 7576 states have internal predecessors, (8700), 0 states have call successors, (0), 0 states 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 19:01:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7577 states to 7577 states and 8700 transitions. [2023-12-15 19:01:33,601 INFO L78 Accepts]: Start accepts. Automaton has 7577 states and 8700 transitions. Word has length 513 [2023-12-15 19:01:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:33,601 INFO L495 AbstractCegarLoop]: Abstraction has 7577 states and 8700 transitions. [2023-12-15 19:01:33,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 19:01:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7577 states and 8700 transitions. [2023-12-15 19:01:33,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-12-15 19:01:33,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:33,609 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:33,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:33,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:33,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:33,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:33,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1801150884, now seen corresponding path program 1 times [2023-12-15 19:01:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:33,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675920961] [2023-12-15 19:01:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 531 proven. 39 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-15 19:01:34,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:34,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675920961] [2023-12-15 19:01:34,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675920961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:34,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128564152] [2023-12-15 19:01:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:34,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:34,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:34,306 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 19:01:34,336 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 19:01:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:34,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:34,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2023-12-15 19:01:34,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:34,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128564152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:34,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:34,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:34,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945774551] [2023-12-15 19:01:34,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:34,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:34,570 INFO L87 Difference]: Start difference. First operand 7577 states and 8700 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 19:01:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:35,918 INFO L93 Difference]: Finished difference Result 17245 states and 20050 transitions. [2023-12-15 19:01:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:35,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 546 [2023-12-15 19:01:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:35,934 INFO L225 Difference]: With dead ends: 17245 [2023-12-15 19:01:35,934 INFO L226 Difference]: Without dead ends: 9968 [2023-12-15 19:01:35,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:35,941 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 354 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:35,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 444 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:01:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9968 states. [2023-12-15 19:01:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9968 to 9968. [2023-12-15 19:01:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9967 states have (on average 1.1498946523527642) internal successors, (11461), 9967 states have internal predecessors, (11461), 0 states have call successors, (0), 0 states 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 19:01:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 11461 transitions. [2023-12-15 19:01:36,034 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 11461 transitions. Word has length 546 [2023-12-15 19:01:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:36,035 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 11461 transitions. [2023-12-15 19:01:36,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 19:01:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 11461 transitions. [2023-12-15 19:01:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-15 19:01:36,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:36,040 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:36,045 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 19:01:36,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:01:36,246 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:36,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash 660035886, now seen corresponding path program 1 times [2023-12-15 19:01:36,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:36,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691790235] [2023-12-15 19:01:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:36,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-15 19:01:36,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:36,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691790235] [2023-12-15 19:01:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691790235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:36,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:36,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738488743] [2023-12-15 19:01:36,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:36,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:36,662 INFO L87 Difference]: Start difference. First operand 9968 states and 11461 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 19:01:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:38,100 INFO L93 Difference]: Finished difference Result 24135 states and 27999 transitions. [2023-12-15 19:01:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 550 [2023-12-15 19:01:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:38,123 INFO L225 Difference]: With dead ends: 24135 [2023-12-15 19:01:38,124 INFO L226 Difference]: Without dead ends: 14467 [2023-12-15 19:01:38,133 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 19:01:38,133 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 246 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:38,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 618 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:01:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14467 states. [2023-12-15 19:01:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14467 to 14157. [2023-12-15 19:01:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14157 states, 14156 states have (on average 1.1347838372421588) internal successors, (16064), 14156 states have internal predecessors, (16064), 0 states have call successors, (0), 0 states 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 19:01:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14157 states to 14157 states and 16064 transitions. [2023-12-15 19:01:38,265 INFO L78 Accepts]: Start accepts. Automaton has 14157 states and 16064 transitions. Word has length 550 [2023-12-15 19:01:38,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:38,265 INFO L495 AbstractCegarLoop]: Abstraction has 14157 states and 16064 transitions. [2023-12-15 19:01:38,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 19:01:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 14157 states and 16064 transitions. [2023-12-15 19:01:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2023-12-15 19:01:38,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:38,272 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:38,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:01:38,273 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:38,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:38,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1016252306, now seen corresponding path program 1 times [2023-12-15 19:01:38,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:38,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32863523] [2023-12-15 19:01:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:38,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 688 proven. 39 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2023-12-15 19:01:38,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32863523] [2023-12-15 19:01:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32863523] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:38,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633294778] [2023-12-15 19:01:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:38,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:38,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:38,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:38,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:01:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:39,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:39,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2023-12-15 19:01:39,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:39,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633294778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:39,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:39,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:39,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912674129] [2023-12-15 19:01:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:39,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:39,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:39,090 INFO L87 Difference]: Start difference. First operand 14157 states and 16064 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 19:01:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:40,553 INFO L93 Difference]: Finished difference Result 27711 states and 31487 transitions. [2023-12-15 19:01:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 625 [2023-12-15 19:01:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:40,570 INFO L225 Difference]: With dead ends: 27711 [2023-12-15 19:01:40,570 INFO L226 Difference]: Without dead ends: 13854 [2023-12-15 19:01:40,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:01:40,582 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 252 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:40,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 601 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:01:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13854 states. [2023-12-15 19:01:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13854 to 13554. [2023-12-15 19:01:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13554 states, 13553 states have (on average 1.0829336678226222) internal successors, (14677), 13553 states have internal predecessors, (14677), 0 states have call successors, (0), 0 states 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 19:01:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13554 states to 13554 states and 14677 transitions. [2023-12-15 19:01:40,756 INFO L78 Accepts]: Start accepts. Automaton has 13554 states and 14677 transitions. Word has length 625 [2023-12-15 19:01:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 13554 states and 14677 transitions. [2023-12-15 19:01:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 19:01:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 13554 states and 14677 transitions. [2023-12-15 19:01:40,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2023-12-15 19:01:40,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:40,764 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:40,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:40,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:40,970 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:40,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1569391011, now seen corresponding path program 1 times [2023-12-15 19:01:40,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:40,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108072690] [2023-12-15 19:01:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:40,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 615 proven. 39 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-15 19:01:41,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108072690] [2023-12-15 19:01:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108072690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413648800] [2023-12-15 19:01:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:41,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:41,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:41,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:01:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:41,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:01:41,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-15 19:01:42,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:42,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413648800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:42,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:42,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 19:01:42,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539901637] [2023-12-15 19:01:42,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:42,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:01:42,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:01:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:42,276 INFO L87 Difference]: Start difference. First operand 13554 states and 14677 transitions. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 19:01:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:44,097 INFO L93 Difference]: Finished difference Result 28305 states and 30685 transitions. [2023-12-15 19:01:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:01:44,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 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 626 [2023-12-15 19:01:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:44,153 INFO L225 Difference]: With dead ends: 28305 [2023-12-15 19:01:44,153 INFO L226 Difference]: Without dead ends: 14752 [2023-12-15 19:01:44,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:44,165 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 316 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:44,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 386 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:01:44,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14752 states. [2023-12-15 19:01:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14752 to 14452. [2023-12-15 19:01:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14452 states, 14451 states have (on average 1.080894055774687) internal successors, (15620), 14451 states have internal predecessors, (15620), 0 states have call successors, (0), 0 states 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 19:01:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14452 states to 14452 states and 15620 transitions. [2023-12-15 19:01:44,324 INFO L78 Accepts]: Start accepts. Automaton has 14452 states and 15620 transitions. Word has length 626 [2023-12-15 19:01:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:44,340 INFO L495 AbstractCegarLoop]: Abstraction has 14452 states and 15620 transitions. [2023-12-15 19:01:44,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 19:01:44,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14452 states and 15620 transitions. [2023-12-15 19:01:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2023-12-15 19:01:44,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:44,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:44,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:01:44,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:44,560 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:44,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash 928750202, now seen corresponding path program 1 times [2023-12-15 19:01:44,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:44,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676057545] [2023-12-15 19:01:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:44,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 266 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:01:45,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676057545] [2023-12-15 19:01:45,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676057545] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002250554] [2023-12-15 19:01:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:45,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:45,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:45,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:45,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:01:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:45,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:01:45,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:01:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-15 19:01:50,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:01:50,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002250554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:50,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:01:50,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 19:01:50,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617559442] [2023-12-15 19:01:50,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:50,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:50,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:50,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:50,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:50,564 INFO L87 Difference]: Start difference. First operand 14452 states and 15620 transitions. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 19:01:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:52,009 INFO L93 Difference]: Finished difference Result 37280 states and 40277 transitions. [2023-12-15 19:01:52,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:52,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 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 663 [2023-12-15 19:01:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:52,039 INFO L225 Difference]: With dead ends: 37280 [2023-12-15 19:01:52,039 INFO L226 Difference]: Without dead ends: 22829 [2023-12-15 19:01:52,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:01:52,052 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 136 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:52,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 250 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:01:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22829 states. [2023-12-15 19:01:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22829 to 18939. [2023-12-15 19:01:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18939 states, 18938 states have (on average 1.0791002217763228) internal successors, (20436), 18938 states have internal predecessors, (20436), 0 states have call successors, (0), 0 states 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 19:01:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18939 states to 18939 states and 20436 transitions. [2023-12-15 19:01:52,348 INFO L78 Accepts]: Start accepts. Automaton has 18939 states and 20436 transitions. Word has length 663 [2023-12-15 19:01:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:52,349 INFO L495 AbstractCegarLoop]: Abstraction has 18939 states and 20436 transitions. [2023-12-15 19:01:52,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 19:01:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 18939 states and 20436 transitions. [2023-12-15 19:01:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-12-15 19:01:52,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:52,363 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 19:01:52,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 19:01:52,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-15 19:01:52,568 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:52,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:52,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1417746458, now seen corresponding path program 1 times [2023-12-15 19:01:52,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:52,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620001122] [2023-12-15 19:01:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:52,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2023-12-15 19:01:52,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:52,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620001122] [2023-12-15 19:01:52,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620001122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:52,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:52,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:01:52,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755219529] [2023-12-15 19:01:52,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:01:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:01:52,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:01:52,964 INFO L87 Difference]: Start difference. First operand 18939 states and 20436 transitions. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:54,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:54,818 INFO L93 Difference]: Finished difference Result 48948 states and 52649 transitions. [2023-12-15 19:01:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:01:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 687 [2023-12-15 19:01:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:54,850 INFO L225 Difference]: With dead ends: 48948 [2023-12-15 19:01:54,850 INFO L226 Difference]: Without dead ends: 30010 [2023-12-15 19:01:54,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:01:54,866 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 585 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:54,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 236 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:01:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30010 states. [2023-12-15 19:01:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30010 to 20132. [2023-12-15 19:01:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20132 states, 20131 states have (on average 1.0737171526501417) internal successors, (21615), 20131 states have internal predecessors, (21615), 0 states have call successors, (0), 0 states 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 19:01:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20132 states to 20132 states and 21615 transitions. [2023-12-15 19:01:55,073 INFO L78 Accepts]: Start accepts. Automaton has 20132 states and 21615 transitions. Word has length 687 [2023-12-15 19:01:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:55,073 INFO L495 AbstractCegarLoop]: Abstraction has 20132 states and 21615 transitions. [2023-12-15 19:01:55,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:01:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 20132 states and 21615 transitions. [2023-12-15 19:01:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2023-12-15 19:01:55,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:55,130 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:01:55,131 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:55,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1231133246, now seen corresponding path program 1 times [2023-12-15 19:01:55,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:55,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65902993] [2023-12-15 19:01:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:55,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2023-12-15 19:01:55,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:55,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65902993] [2023-12-15 19:01:55,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65902993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:55,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:55,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:55,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053438385] [2023-12-15 19:01:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:55,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:55,390 INFO L87 Difference]: Start difference. First operand 20132 states and 21615 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 19:01:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:56,578 INFO L93 Difference]: Finished difference Result 39961 states and 42915 transitions. [2023-12-15 19:01:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:56,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 718 [2023-12-15 19:01:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:56,605 INFO L225 Difference]: With dead ends: 39961 [2023-12-15 19:01:56,605 INFO L226 Difference]: Without dead ends: 19830 [2023-12-15 19:01:56,635 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 19:01:56,636 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 463 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:56,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 68 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:01:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19830 states. [2023-12-15 19:01:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19830 to 19829. [2023-12-15 19:01:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19829 states, 19828 states have (on average 1.074087149485576) internal successors, (21297), 19828 states have internal predecessors, (21297), 0 states have call successors, (0), 0 states 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 19:01:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19829 states to 19829 states and 21297 transitions. [2023-12-15 19:01:56,809 INFO L78 Accepts]: Start accepts. Automaton has 19829 states and 21297 transitions. Word has length 718 [2023-12-15 19:01:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:56,809 INFO L495 AbstractCegarLoop]: Abstraction has 19829 states and 21297 transitions. [2023-12-15 19:01:56,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 19:01:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 19829 states and 21297 transitions. [2023-12-15 19:01:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-15 19:01:56,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:56,821 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:01:56,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:01:56,821 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:56,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1099001505, now seen corresponding path program 1 times [2023-12-15 19:01:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:56,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360487814] [2023-12-15 19:01:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:56,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2023-12-15 19:01:57,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:57,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360487814] [2023-12-15 19:01:57,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360487814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:01:57,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:01:57,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:01:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652604234] [2023-12-15 19:01:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:01:57,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:01:57,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:01:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:01:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:01:57,054 INFO L87 Difference]: Start difference. First operand 19829 states and 21297 transitions. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 19:01:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:01:58,395 INFO L93 Difference]: Finished difference Result 45330 states and 48728 transitions. [2023-12-15 19:01:58,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:01:58,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 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 752 [2023-12-15 19:01:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:01:58,416 INFO L225 Difference]: With dead ends: 45330 [2023-12-15 19:01:58,416 INFO L226 Difference]: Without dead ends: 21914 [2023-12-15 19:01:58,429 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 19:01:58,435 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 281 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:01:58,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 507 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 19:01:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21914 states. [2023-12-15 19:01:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21914 to 19223. [2023-12-15 19:01:58,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19223 states, 19222 states have (on average 1.0456768286338571) internal successors, (20100), 19222 states have internal predecessors, (20100), 0 states have call successors, (0), 0 states 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 19:01:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19223 states to 19223 states and 20100 transitions. [2023-12-15 19:01:58,615 INFO L78 Accepts]: Start accepts. Automaton has 19223 states and 20100 transitions. Word has length 752 [2023-12-15 19:01:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:01:58,616 INFO L495 AbstractCegarLoop]: Abstraction has 19223 states and 20100 transitions. [2023-12-15 19:01:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 19:01:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 19223 states and 20100 transitions. [2023-12-15 19:01:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2023-12-15 19:01:58,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:01:58,630 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:58,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:01:58,633 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:01:58,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:01:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash 25811987, now seen corresponding path program 1 times [2023-12-15 19:01:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:01:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079828779] [2023-12-15 19:01:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:01:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 692 proven. 188 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-15 19:01:59,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:01:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079828779] [2023-12-15 19:01:59,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079828779] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:01:59,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631069209] [2023-12-15 19:01:59,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:01:59,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:01:59,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:01:59,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:01:59,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:01:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:01:59,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:01:59,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:02:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 735 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-12-15 19:02:00,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:02:00,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631069209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:00,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:02:00,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-15 19:02:00,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725729900] [2023-12-15 19:02:00,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:00,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:02:00,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:02:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:02:00,120 INFO L87 Difference]: Start difference. First operand 19223 states and 20100 transitions. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 19:02:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:02,083 INFO L93 Difference]: Finished difference Result 49248 states and 51406 transitions. [2023-12-15 19:02:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:02:02,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 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 827 [2023-12-15 19:02:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:02,109 INFO L225 Difference]: With dead ends: 49248 [2023-12-15 19:02:02,110 INFO L226 Difference]: Without dead ends: 29727 [2023-12-15 19:02:02,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:02:02,116 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 370 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:02,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 567 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 19:02:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29727 states. [2023-12-15 19:02:02,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29727 to 24611. [2023-12-15 19:02:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24611 states, 24610 states have (on average 1.0429500203169444) internal successors, (25667), 24610 states have internal predecessors, (25667), 0 states have call successors, (0), 0 states 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 19:02:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24611 states to 24611 states and 25667 transitions. [2023-12-15 19:02:02,327 INFO L78 Accepts]: Start accepts. Automaton has 24611 states and 25667 transitions. Word has length 827 [2023-12-15 19:02:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:02,327 INFO L495 AbstractCegarLoop]: Abstraction has 24611 states and 25667 transitions. [2023-12-15 19:02:02,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states 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 19:02:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 24611 states and 25667 transitions. [2023-12-15 19:02:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2023-12-15 19:02:02,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:02,339 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:02:02,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:02:02,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 19:02:02,544 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:02,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash 90506919, now seen corresponding path program 1 times [2023-12-15 19:02:02,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:02,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840575369] [2023-12-15 19:02:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:02,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 799 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2023-12-15 19:02:03,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840575369] [2023-12-15 19:02:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840575369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:02:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:02:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024356009] [2023-12-15 19:02:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:03,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:02:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:02:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:03,073 INFO L87 Difference]: Start difference. First operand 24611 states and 25667 transitions. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 19:02:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:04,275 INFO L93 Difference]: Finished difference Result 40211 states and 41759 transitions. [2023-12-15 19:02:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:02:04,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 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 835 [2023-12-15 19:02:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:04,288 INFO L225 Difference]: With dead ends: 40211 [2023-12-15 19:02:04,288 INFO L226 Difference]: Without dead ends: 15601 [2023-12-15 19:02:04,299 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 19:02:04,299 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 319 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:04,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 94 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:02:04,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15601 states. [2023-12-15 19:02:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15601 to 12899. [2023-12-15 19:02:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12899 states, 12898 states have (on average 1.0294619320824934) internal successors, (13278), 12898 states have internal predecessors, (13278), 0 states have call successors, (0), 0 states 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 19:02:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12899 states to 12899 states and 13278 transitions. [2023-12-15 19:02:04,438 INFO L78 Accepts]: Start accepts. Automaton has 12899 states and 13278 transitions. Word has length 835 [2023-12-15 19:02:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:04,439 INFO L495 AbstractCegarLoop]: Abstraction has 12899 states and 13278 transitions. [2023-12-15 19:02:04,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 19:02:04,439 INFO L276 IsEmpty]: Start isEmpty. Operand 12899 states and 13278 transitions. [2023-12-15 19:02:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 849 [2023-12-15 19:02:04,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:04,455 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:02:04,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 19:02:04,455 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:04,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -180597777, now seen corresponding path program 1 times [2023-12-15 19:02:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:04,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046314569] [2023-12-15 19:02:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2023-12-15 19:02:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:04,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046314569] [2023-12-15 19:02:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046314569] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:04,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:02:04,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:02:04,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011418954] [2023-12-15 19:02:04,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:04,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:02:04,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:02:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:04,934 INFO L87 Difference]: Start difference. First operand 12899 states and 13278 transitions. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 19:02:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:05,844 INFO L93 Difference]: Finished difference Result 29699 states and 30620 transitions. [2023-12-15 19:02:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:02:05,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 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 848 [2023-12-15 19:02:05,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:05,861 INFO L225 Difference]: With dead ends: 29699 [2023-12-15 19:02:05,861 INFO L226 Difference]: Without dead ends: 16801 [2023-12-15 19:02:05,870 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 19:02:05,871 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 175 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:05,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 443 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:02:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16801 states. [2023-12-15 19:02:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16801 to 15303. [2023-12-15 19:02:05,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15303 states, 15302 states have (on average 1.0275780943667494) internal successors, (15724), 15302 states have internal predecessors, (15724), 0 states have call successors, (0), 0 states 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 19:02:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15303 states to 15303 states and 15724 transitions. [2023-12-15 19:02:06,006 INFO L78 Accepts]: Start accepts. Automaton has 15303 states and 15724 transitions. Word has length 848 [2023-12-15 19:02:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:06,006 INFO L495 AbstractCegarLoop]: Abstraction has 15303 states and 15724 transitions. [2023-12-15 19:02:06,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states 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 19:02:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 15303 states and 15724 transitions. [2023-12-15 19:02:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2023-12-15 19:02:06,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:06,017 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:02:06,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 19:02:06,017 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:06,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1729561592, now seen corresponding path program 1 times [2023-12-15 19:02:06,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:06,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659928462] [2023-12-15 19:02:06,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:06,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 641 proven. 269 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-15 19:02:07,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:07,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659928462] [2023-12-15 19:02:07,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659928462] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:02:07,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448357772] [2023-12-15 19:02:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:07,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:02:07,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:02:07,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:02:07,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:02:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:07,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:02:07,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:02:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-15 19:02:07,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:02:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448357772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:07,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:02:07,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-15 19:02:07,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590546893] [2023-12-15 19:02:07,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:07,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:02:07,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:02:07,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:02:07,860 INFO L87 Difference]: Start difference. First operand 15303 states and 15724 transitions. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 19:02:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:09,244 INFO L93 Difference]: Finished difference Result 21599 states and 22159 transitions. [2023-12-15 19:02:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:02:09,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 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 868 [2023-12-15 19:02:09,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:09,262 INFO L225 Difference]: With dead ends: 21599 [2023-12-15 19:02:09,263 INFO L226 Difference]: Without dead ends: 21597 [2023-12-15 19:02:09,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:02:09,280 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 450 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:09,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 76 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:02:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21597 states. [2023-12-15 19:02:09,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21597 to 15004. [2023-12-15 19:02:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15004 states, 15003 states have (on average 1.0275944811037792) internal successors, (15417), 15003 states have internal predecessors, (15417), 0 states have call successors, (0), 0 states 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 19:02:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15004 states to 15004 states and 15417 transitions. [2023-12-15 19:02:09,431 INFO L78 Accepts]: Start accepts. Automaton has 15004 states and 15417 transitions. Word has length 868 [2023-12-15 19:02:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:09,431 INFO L495 AbstractCegarLoop]: Abstraction has 15004 states and 15417 transitions. [2023-12-15 19:02:09,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 19:02:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15004 states and 15417 transitions. [2023-12-15 19:02:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2023-12-15 19:02:09,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:09,442 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 19:02:09,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 19:02:09,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:02:09,647 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:09,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1130952965, now seen corresponding path program 1 times [2023-12-15 19:02:09,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:09,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448713613] [2023-12-15 19:02:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2023-12-15 19:02:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:09,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448713613] [2023-12-15 19:02:09,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448713613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:09,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:02:09,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:02:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059110563] [2023-12-15 19:02:09,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:09,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:02:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:09,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:02:09,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:02:09,999 INFO L87 Difference]: Start difference. First operand 15004 states and 15417 transitions. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 19:02:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:11,000 INFO L93 Difference]: Finished difference Result 31800 states and 32671 transitions. [2023-12-15 19:02:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:02:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 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 880 [2023-12-15 19:02:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:11,016 INFO L225 Difference]: With dead ends: 31800 [2023-12-15 19:02:11,017 INFO L226 Difference]: Without dead ends: 16498 [2023-12-15 19:02:11,026 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 19:02:11,027 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 308 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:11,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 430 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:02:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16498 states. [2023-12-15 19:02:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16498 to 14702. [2023-12-15 19:02:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14702 states, 14701 states have (on average 1.026596830147609) internal successors, (15092), 14701 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states 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 19:02:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14702 states to 14702 states and 15092 transitions. [2023-12-15 19:02:11,166 INFO L78 Accepts]: Start accepts. Automaton has 14702 states and 15092 transitions. Word has length 880 [2023-12-15 19:02:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:11,166 INFO L495 AbstractCegarLoop]: Abstraction has 14702 states and 15092 transitions. [2023-12-15 19:02:11,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states 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 19:02:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 14702 states and 15092 transitions. [2023-12-15 19:02:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2023-12-15 19:02:11,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:11,177 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 19:02:11,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 19:02:11,187 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:11,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash 42576084, now seen corresponding path program 1 times [2023-12-15 19:02:11,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:11,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293296068] [2023-12-15 19:02:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2023-12-15 19:02:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:12,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293296068] [2023-12-15 19:02:12,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293296068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:02:12,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:02:12,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:02:12,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274710394] [2023-12-15 19:02:12,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:02:12,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:02:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:02:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:02:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:02:12,254 INFO L87 Difference]: Start difference. First operand 14702 states and 15092 transitions. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 19:02:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:02:13,916 INFO L93 Difference]: Finished difference Result 34199 states and 35082 transitions. [2023-12-15 19:02:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:02:13,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 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 901 [2023-12-15 19:02:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:02:13,934 INFO L225 Difference]: With dead ends: 34199 [2023-12-15 19:02:13,934 INFO L226 Difference]: Without dead ends: 19199 [2023-12-15 19:02:13,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:02:13,945 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 490 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:02:13,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 400 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:02:13,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19199 states. [2023-12-15 19:02:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19199 to 13804. [2023-12-15 19:02:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13804 states, 13803 states have (on average 1.0267333188437295) internal successors, (14172), 13803 states have internal predecessors, (14172), 0 states have call successors, (0), 0 states 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 19:02:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13804 states to 13804 states and 14172 transitions. [2023-12-15 19:02:14,072 INFO L78 Accepts]: Start accepts. Automaton has 13804 states and 14172 transitions. Word has length 901 [2023-12-15 19:02:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:02:14,072 INFO L495 AbstractCegarLoop]: Abstraction has 13804 states and 14172 transitions. [2023-12-15 19:02:14,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 19:02:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 13804 states and 14172 transitions. [2023-12-15 19:02:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2023-12-15 19:02:14,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:02:14,098 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:02:14,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 19:02:14,098 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:02:14,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:02:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1619083546, now seen corresponding path program 1 times [2023-12-15 19:02:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:02:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699453688] [2023-12-15 19:02:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:02:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1003 proven. 183 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-15 19:02:15,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:02:15,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699453688] [2023-12-15 19:02:15,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699453688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:02:15,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559285559] [2023-12-15 19:02:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:02:15,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:02:15,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:02:15,400 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:02:15,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:02:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:02:15,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:02:15,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:02:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1133 proven. 76 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-15 19:02:15,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 19:02:16,248 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:02:16,254 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:02:16,254 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 19:02:16,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 19:02:16,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-15 19:02:16,449 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 906 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2023-12-15 19:02:16,460 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:02:16,478 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:02:16,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:02:16 BoogieIcfgContainer [2023-12-15 19:02:16,481 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:02:16,485 INFO L158 Benchmark]: Toolchain (without parser) took 60489.65ms. Allocated memory was 276.8MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 219.8MB in the beginning and 1.1GB in the end (delta: -847.5MB). Peak memory consumption was 384.0MB. Max. memory is 8.0GB. [2023-12-15 19:02:16,485 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 181.4MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:02:16,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 825.43ms. Allocated memory is still 276.8MB. Free memory was 219.4MB in the beginning and 196.3MB in the end (delta: 23.0MB). Peak memory consumption was 44.8MB. Max. memory is 8.0GB. [2023-12-15 19:02:16,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 148.08ms. Allocated memory is still 276.8MB. Free memory was 196.3MB in the beginning and 157.0MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-15 19:02:16,487 INFO L158 Benchmark]: Boogie Preprocessor took 311.08ms. Allocated memory is still 276.8MB. Free memory was 157.0MB in the beginning and 201.1MB in the end (delta: -44.1MB). Peak memory consumption was 49.7MB. Max. memory is 8.0GB. [2023-12-15 19:02:16,487 INFO L158 Benchmark]: RCFGBuilder took 2150.00ms. Allocated memory was 276.8MB in the beginning and 483.4MB in the end (delta: 206.6MB). Free memory was 201.1MB in the beginning and 369.6MB in the end (delta: -168.5MB). Peak memory consumption was 126.9MB. Max. memory is 8.0GB. [2023-12-15 19:02:16,488 INFO L158 Benchmark]: TraceAbstraction took 57048.38ms. Allocated memory was 483.4MB in the beginning and 1.5GB in the end (delta: 1.0GB). Free memory was 369.1MB in the beginning and 1.1GB in the end (delta: -698.2MB). Peak memory consumption was 326.3MB. Max. memory is 8.0GB. [2023-12-15 19:02:16,492 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 181.4MB. Free memory is still 133.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 825.43ms. Allocated memory is still 276.8MB. Free memory was 219.4MB in the beginning and 196.3MB in the end (delta: 23.0MB). Peak memory consumption was 44.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 148.08ms. Allocated memory is still 276.8MB. Free memory was 196.3MB in the beginning and 157.0MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 311.08ms. Allocated memory is still 276.8MB. Free memory was 157.0MB in the beginning and 201.1MB in the end (delta: -44.1MB). Peak memory consumption was 49.7MB. Max. memory is 8.0GB. * RCFGBuilder took 2150.00ms. Allocated memory was 276.8MB in the beginning and 483.4MB in the end (delta: 206.6MB). Free memory was 201.1MB in the beginning and 369.6MB in the end (delta: -168.5MB). Peak memory consumption was 126.9MB. Max. memory is 8.0GB. * TraceAbstraction took 57048.38ms. Allocated memory was 483.4MB in the beginning and 1.5GB in the end (delta: 1.0GB). Free memory was 369.1MB in the beginning and 1.1GB in the end (delta: -698.2MB). Peak memory consumption was 326.3MB. 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: 206]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 206). Cancelled while NwaCegarLoop was analyzing trace of length 906 with TraceHistMax 6,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 362 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.0s, OverallIterations: 24, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 31.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6690 SdHoareTripleChecker+Valid, 28.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6690 mSDsluCounter, 9176 SdHoareTripleChecker+Invalid, 24.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 799 mSDsCounter, 3784 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23578 IncrementalHoareTripleChecker+Invalid, 27362 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3784 mSolverCounterUnsat, 8377 mSDtfsCounter, 23578 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4735 GetRequests, 4686 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24611occurred in iteration=18, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 23 MinimizatonAttempts, 42585 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 17056 NumberOfCodeBlocks, 17056 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 17026 ConstructedInterpolants, 0 QuantifiedInterpolants, 56765 SizeOfPredicates, 0 NumberOfNonLiveVariables, 5598 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 30 InterpolantComputations, 23 PerfectInterpolantSequences, 20867/21832 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