/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 03:54:41,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 03:54:42,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 03:54:42,029 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 03:54:42,029 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 03:54:42,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 03:54:42,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 03:54:42,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 03:54:42,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 03:54:42,046 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 03:54:42,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 03:54:42,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 03:54:42,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 03:54:42,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 03:54:42,047 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 03:54:42,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 03:54:42,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 03:54:42,048 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 03:54:42,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 03:54:42,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 03:54:42,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 03:54:42,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 03:54:42,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 03:54:42,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 03:54:42,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 03:54:42,053 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 03:54:42,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 03:54:42,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 03:54:42,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 03:54:42,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 03:54:42,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 03:54:42,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 03:54:42,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:54:42,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 03:54:42,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 03:54:42,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 03:54:42,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 03:54:42,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 03:54:42,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 03:54:42,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 03:54:42,056 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 03:54:42,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 03:54:42,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 03:54:42,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 03:54:42,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 03:54:42,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 03:54:42,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 03:54:42,289 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 03:54:42,289 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 03:54:42,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15.c [2023-12-19 03:54:43,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 03:54:43,721 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 03:54:43,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15.c [2023-12-19 03:54:43,748 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7245554ab/cd5d95b56d0f40b58376453856b1e914/FLAG7ebc16140 [2023-12-19 03:54:43,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7245554ab/cd5d95b56d0f40b58376453856b1e914 [2023-12-19 03:54:43,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 03:54:43,764 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 03:54:43,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 03:54:43,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 03:54:43,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 03:54:43,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:54:43" (1/1) ... [2023-12-19 03:54:43,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a26311a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:43, skipping insertion in model container [2023-12-19 03:54:43,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:54:43" (1/1) ... [2023-12-19 03:54:43,870 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 03:54:44,065 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15.c[5297,5310] [2023-12-19 03:54:44,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:54:44,758 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 03:54:44,776 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15.c[5297,5310] [2023-12-19 03:54:45,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:54:45,162 INFO L206 MainTranslator]: Completed translation [2023-12-19 03:54:45,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45 WrapperNode [2023-12-19 03:54:45,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 03:54:45,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 03:54:45,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 03:54:45,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 03:54:45,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:45,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:45,568 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 03:54:45,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 03:54:45,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 03:54:45,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 03:54:45,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 03:54:45,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:45,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:45,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:45,871 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]. [2023-12-19 03:54:45,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:45,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:46,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:46,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:46,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:46,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:46,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 03:54:46,215 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 03:54:46,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 03:54:46,215 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 03:54:46,216 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (1/1) ... [2023-12-19 03:54:46,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:54:46,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:54:46,241 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) [2023-12-19 03:54:46,243 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 [2023-12-19 03:54:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 03:54:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 03:54:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 03:54:46,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 03:54:46,308 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 03:54:46,310 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 03:54:50,168 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 03:54:50,203 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 03:54:50,204 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 03:54:50,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:54:50 BoogieIcfgContainer [2023-12-19 03:54:50,204 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 03:54:50,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 03:54:50,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 03:54:50,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 03:54:50,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:54:43" (1/3) ... [2023-12-19 03:54:50,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5836d6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:54:50, skipping insertion in model container [2023-12-19 03:54:50,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:54:45" (2/3) ... [2023-12-19 03:54:50,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5836d6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:54:50, skipping insertion in model container [2023-12-19 03:54:50,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:54:50" (3/3) ... [2023-12-19 03:54:50,210 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label15.c [2023-12-19 03:54:50,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 03:54:50,221 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 03:54:50,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 03:54:50,265 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;@55ce9490, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 03:54:50,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 03:54:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 03:54:50,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:50,275 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] [2023-12-19 03:54:50,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:50,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1529089843, now seen corresponding path program 1 times [2023-12-19 03:54:50,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:50,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321778519] [2023-12-19 03:54:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:50,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:54:50,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:50,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321778519] [2023-12-19 03:54:50,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321778519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:50,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:50,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487813727] [2023-12-19 03:54:50,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:50,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 03:54:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:50,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 03:54:50,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:54:50,450 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:50,517 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 03:54:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 03:54:50,519 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-19 03:54:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:50,531 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 03:54:50,532 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 03:54:50,536 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 [2023-12-19 03:54:50,538 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:50,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 03:54:50,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 03:54:50,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 03:54:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 03:54:50,642 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 35 [2023-12-19 03:54:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:50,642 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 03:54:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 03:54:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-19 03:54:50,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:50,643 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] [2023-12-19 03:54:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 03:54:50,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:50,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash 618286059, now seen corresponding path program 1 times [2023-12-19 03:54:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:50,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205011729] [2023-12-19 03:54:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:50,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:54:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:50,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205011729] [2023-12-19 03:54:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205011729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:50,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:50,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:50,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69959056] [2023-12-19 03:54:50,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:50,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:50,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:50,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:50,770 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:54,771 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-12-19 03:54:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:54,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-19 03:54:54,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:54,779 INFO L225 Difference]: With dead ends: 3015 [2023-12-19 03:54:54,780 INFO L226 Difference]: Without dead ends: 1982 [2023-12-19 03:54:54,781 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 [2023-12-19 03:54:54,782 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1019 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:54,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-19 03:54:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-12-19 03:54:54,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-12-19 03:54:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:54,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-12-19 03:54:54,829 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 35 [2023-12-19 03:54:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:54,829 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-12-19 03:54:54,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:54,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-12-19 03:54:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 03:54:54,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:54,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:54,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 03:54:54,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:54,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash -219422559, now seen corresponding path program 1 times [2023-12-19 03:54:54,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:54,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955539494] [2023-12-19 03:54:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:54,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:54:54,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955539494] [2023-12-19 03:54:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955539494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:55,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:55,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666435956] [2023-12-19 03:54:55,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:55,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:55,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:55,009 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:57,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:57,944 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-12-19 03:54:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:54:57,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-12-19 03:54:57,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:57,957 INFO L225 Difference]: With dead ends: 5455 [2023-12-19 03:54:57,957 INFO L226 Difference]: Without dead ends: 3527 [2023-12-19 03:54:57,960 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 [2023-12-19 03:54:57,961 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:57,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:54:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-12-19 03:54:58,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-12-19 03:54:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-12-19 03:54:58,055 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 100 [2023-12-19 03:54:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:58,057 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-12-19 03:54:58,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:54:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-12-19 03:54:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-19 03:54:58,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:58,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:54:58,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 03:54:58,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:58,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1135333746, now seen corresponding path program 1 times [2023-12-19 03:54:58,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:58,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695016832] [2023-12-19 03:54:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:58,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:54:58,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:58,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695016832] [2023-12-19 03:54:58,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695016832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:54:58,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:54:58,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:54:58,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942429671] [2023-12-19 03:54:58,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:54:58,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:54:58,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:58,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:54:58,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:54:58,186 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:01,101 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2023-12-19 03:55:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:01,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-19 03:55:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:01,128 INFO L225 Difference]: With dead ends: 10231 [2023-12-19 03:55:01,128 INFO L226 Difference]: Without dead ends: 6707 [2023-12-19 03:55:01,137 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 [2023-12-19 03:55:01,143 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:01,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:55:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2023-12-19 03:55:01,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2023-12-19 03:55:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:01,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-12-19 03:55:01,260 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 106 [2023-12-19 03:55:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:01,261 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-12-19 03:55:01,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:01,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-12-19 03:55:01,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 03:55:01,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:01,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:01,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 03:55:01,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:01,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:01,270 INFO L85 PathProgramCache]: Analyzing trace with hash -73128569, now seen corresponding path program 1 times [2023-12-19 03:55:01,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:01,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653227488] [2023-12-19 03:55:01,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:01,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:55:01,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653227488] [2023-12-19 03:55:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653227488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:01,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:01,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:55:01,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039664776] [2023-12-19 03:55:01,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:01,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:01,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:01,421 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:04,678 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-12-19 03:55:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:04,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-19 03:55:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:04,705 INFO L225 Difference]: With dead ends: 17442 [2023-12-19 03:55:04,705 INFO L226 Difference]: Without dead ends: 10744 [2023-12-19 03:55:04,728 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 [2023-12-19 03:55:04,729 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:04,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:55:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-12-19 03:55:04,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-12-19 03:55:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-12-19 03:55:04,858 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 136 [2023-12-19 03:55:04,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:04,859 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-12-19 03:55:04,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:04,859 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-12-19 03:55:04,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 03:55:04,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:04,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:04,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 03:55:04,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:04,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash 249104654, now seen corresponding path program 1 times [2023-12-19 03:55:04,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:04,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417650214] [2023-12-19 03:55:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:04,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:55:05,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:05,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417650214] [2023-12-19 03:55:05,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417650214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:05,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:05,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:55:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957901754] [2023-12-19 03:55:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:05,124 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:07,536 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2023-12-19 03:55:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:07,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2023-12-19 03:55:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:07,563 INFO L225 Difference]: With dead ends: 20548 [2023-12-19 03:55:07,563 INFO L226 Difference]: Without dead ends: 10668 [2023-12-19 03:55:07,574 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 [2023-12-19 03:55:07,575 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:07,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:55:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2023-12-19 03:55:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2023-12-19 03:55:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2023-12-19 03:55:07,710 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 146 [2023-12-19 03:55:07,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:07,711 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2023-12-19 03:55:07,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:07,712 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2023-12-19 03:55:07,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-19 03:55:07,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:07,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:07,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 03:55:07,713 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:07,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1504628644, now seen corresponding path program 1 times [2023-12-19 03:55:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779854492] [2023-12-19 03:55:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:55:08,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:08,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779854492] [2023-12-19 03:55:08,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779854492] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:55:08,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203661087] [2023-12-19 03:55:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:08,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:08,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:55:08,211 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) [2023-12-19 03:55:08,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 03:55:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:08,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:55:08,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:55:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 03:55:08,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:55:08,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203661087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:08,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:55:08,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-19 03:55:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556739722] [2023-12-19 03:55:08,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:08,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:08,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:08,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:08,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:55:08,535 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:11,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:11,575 INFO L93 Difference]: Finished difference Result 30030 states and 41216 transitions. [2023-12-19 03:55:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:11,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2023-12-19 03:55:11,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:11,607 INFO L225 Difference]: With dead ends: 30030 [2023-12-19 03:55:11,607 INFO L226 Difference]: Without dead ends: 20150 [2023-12-19 03:55:11,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:55:11,620 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 736 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:11,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1219 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:55:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2023-12-19 03:55:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 19336. [2023-12-19 03:55:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19336 states, 19335 states have (on average 1.2424618567364882) internal successors, (24023), 19335 states have internal predecessors, (24023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19336 states to 19336 states and 24023 transitions. [2023-12-19 03:55:11,837 INFO L78 Accepts]: Start accepts. Automaton has 19336 states and 24023 transitions. Word has length 160 [2023-12-19 03:55:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:11,838 INFO L495 AbstractCegarLoop]: Abstraction has 19336 states and 24023 transitions. [2023-12-19 03:55:11,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 19336 states and 24023 transitions. [2023-12-19 03:55:11,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-19 03:55:11,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:11,841 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:55:11,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 03:55:12,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:12,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:12,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1810403888, now seen corresponding path program 1 times [2023-12-19 03:55:12,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:12,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977735895] [2023-12-19 03:55:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 03:55:12,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:12,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977735895] [2023-12-19 03:55:12,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977735895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:12,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:12,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:55:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621898562] [2023-12-19 03:55:12,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:12,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:12,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:12,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:12,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:12,258 INFO L87 Difference]: Start difference. First operand 19336 states and 24023 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:15,230 INFO L93 Difference]: Finished difference Result 44988 states and 55627 transitions. [2023-12-19 03:55:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:15,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 247 [2023-12-19 03:55:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:15,277 INFO L225 Difference]: With dead ends: 44988 [2023-12-19 03:55:15,277 INFO L226 Difference]: Without dead ends: 26440 [2023-12-19 03:55:15,298 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 [2023-12-19 03:55:15,298 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:15,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:55:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26440 states. [2023-12-19 03:55:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26440 to 26433. [2023-12-19 03:55:15,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 26432 states have (on average 1.2005901937046004) internal successors, (31734), 26432 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 31734 transitions. [2023-12-19 03:55:15,587 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 31734 transitions. Word has length 247 [2023-12-19 03:55:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:15,587 INFO L495 AbstractCegarLoop]: Abstraction has 26433 states and 31734 transitions. [2023-12-19 03:55:15,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 31734 transitions. [2023-12-19 03:55:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-19 03:55:15,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:15,591 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:55:15,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 03:55:15,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:15,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:15,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1157637044, now seen corresponding path program 1 times [2023-12-19 03:55:15,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:15,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001867153] [2023-12-19 03:55:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:15,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:55:15,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:15,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001867153] [2023-12-19 03:55:15,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001867153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:15,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:15,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:15,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13852005] [2023-12-19 03:55:15,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:15,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:15,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:15,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:15,700 INFO L87 Difference]: Start difference. First operand 26433 states and 31734 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:18,776 INFO L93 Difference]: Finished difference Result 72534 states and 87970 transitions. [2023-12-19 03:55:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2023-12-19 03:55:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:18,830 INFO L225 Difference]: With dead ends: 72534 [2023-12-19 03:55:18,831 INFO L226 Difference]: Without dead ends: 46102 [2023-12-19 03:55:18,851 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 [2023-12-19 03:55:18,853 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 841 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:18,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1981 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:55:18,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46102 states. [2023-12-19 03:55:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46102 to 43732. [2023-12-19 03:55:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43732 states, 43731 states have (on average 1.1691248770894789) internal successors, (51127), 43731 states have internal predecessors, (51127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43732 states to 43732 states and 51127 transitions. [2023-12-19 03:55:19,263 INFO L78 Accepts]: Start accepts. Automaton has 43732 states and 51127 transitions. Word has length 249 [2023-12-19 03:55:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:19,263 INFO L495 AbstractCegarLoop]: Abstraction has 43732 states and 51127 transitions. [2023-12-19 03:55:19,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand 43732 states and 51127 transitions. [2023-12-19 03:55:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-19 03:55:19,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:19,266 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:55:19,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 03:55:19,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:19,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2082244430, now seen corresponding path program 1 times [2023-12-19 03:55:19,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:19,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524116938] [2023-12-19 03:55:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:55:19,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524116938] [2023-12-19 03:55:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524116938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:19,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:19,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:19,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067121275] [2023-12-19 03:55:19,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:19,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:19,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:19,403 INFO L87 Difference]: Start difference. First operand 43732 states and 51127 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:22,778 INFO L93 Difference]: Finished difference Result 106363 states and 126457 transitions. [2023-12-19 03:55:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2023-12-19 03:55:22,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:22,853 INFO L225 Difference]: With dead ends: 106363 [2023-12-19 03:55:22,854 INFO L226 Difference]: Without dead ends: 63419 [2023-12-19 03:55:22,887 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 [2023-12-19 03:55:22,887 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 822 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:22,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 928 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:55:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63419 states. [2023-12-19 03:55:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63419 to 61047. [2023-12-19 03:55:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61047 states, 61046 states have (on average 1.1609605870982538) internal successors, (70872), 61046 states have internal predecessors, (70872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61047 states to 61047 states and 70872 transitions. [2023-12-19 03:55:23,641 INFO L78 Accepts]: Start accepts. Automaton has 61047 states and 70872 transitions. Word has length 262 [2023-12-19 03:55:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:23,641 INFO L495 AbstractCegarLoop]: Abstraction has 61047 states and 70872 transitions. [2023-12-19 03:55:23,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 61047 states and 70872 transitions. [2023-12-19 03:55:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-19 03:55:23,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:23,645 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:23,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 03:55:23,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:23,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1550948187, now seen corresponding path program 1 times [2023-12-19 03:55:23,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:23,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936500999] [2023-12-19 03:55:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:23,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 03:55:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936500999] [2023-12-19 03:55:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936500999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:23,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270220262] [2023-12-19 03:55:23,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:55:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:55:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:55:23,800 INFO L87 Difference]: Start difference. First operand 61047 states and 70872 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:30,571 INFO L93 Difference]: Finished difference Result 160081 states and 186749 transitions. [2023-12-19 03:55:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:55:30,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2023-12-19 03:55:30,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:30,718 INFO L225 Difference]: With dead ends: 160081 [2023-12-19 03:55:30,719 INFO L226 Difference]: Without dead ends: 99822 [2023-12-19 03:55:30,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:55:30,767 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1689 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7043 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 7982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 7043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:30,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 1110 Invalid, 7982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 7043 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 03:55:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99822 states. [2023-12-19 03:55:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99822 to 76802. [2023-12-19 03:55:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76802 states, 76801 states have (on average 1.1463783023658547) internal successors, (88043), 76801 states have internal predecessors, (88043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76802 states to 76802 states and 88043 transitions. [2023-12-19 03:55:32,187 INFO L78 Accepts]: Start accepts. Automaton has 76802 states and 88043 transitions. Word has length 323 [2023-12-19 03:55:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:32,187 INFO L495 AbstractCegarLoop]: Abstraction has 76802 states and 88043 transitions. [2023-12-19 03:55:32,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 76802 states and 88043 transitions. [2023-12-19 03:55:32,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-19 03:55:32,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:32,192 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:32,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 03:55:32,192 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:32,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1538923492, now seen corresponding path program 1 times [2023-12-19 03:55:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3381778] [2023-12-19 03:55:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 196 proven. 113 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 03:55:33,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:33,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3381778] [2023-12-19 03:55:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3381778] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:55:33,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013434366] [2023-12-19 03:55:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:33,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:33,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:55:33,117 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) [2023-12-19 03:55:33,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 03:55:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:33,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:55:33,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:55:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:55:33,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:55:33,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013434366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:33,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:55:33,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:55:33,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812466345] [2023-12-19 03:55:33,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:33,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:33,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:33,328 INFO L87 Difference]: Start difference. First operand 76802 states and 88043 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:36,278 INFO L93 Difference]: Finished difference Result 152805 states and 175283 transitions. [2023-12-19 03:55:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:36,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 341 [2023-12-19 03:55:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:36,390 INFO L225 Difference]: With dead ends: 152805 [2023-12-19 03:55:36,390 INFO L226 Difference]: Without dead ends: 76791 [2023-12-19 03:55:36,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:36,424 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 1072 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:36,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 812 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:55:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76791 states. [2023-12-19 03:55:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76791 to 76788. [2023-12-19 03:55:37,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76788 states, 76787 states have (on average 1.1087163191686094) internal successors, (85135), 76787 states have internal predecessors, (85135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76788 states to 76788 states and 85135 transitions. [2023-12-19 03:55:37,333 INFO L78 Accepts]: Start accepts. Automaton has 76788 states and 85135 transitions. Word has length 341 [2023-12-19 03:55:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:37,333 INFO L495 AbstractCegarLoop]: Abstraction has 76788 states and 85135 transitions. [2023-12-19 03:55:37,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 76788 states and 85135 transitions. [2023-12-19 03:55:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-19 03:55:37,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:37,339 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:37,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 03:55:37,544 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,SelfDestructingSolverStorable11 [2023-12-19 03:55:37,544 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:37,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1006701512, now seen corresponding path program 1 times [2023-12-19 03:55:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830518346] [2023-12-19 03:55:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 290 proven. 113 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 03:55:38,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:38,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830518346] [2023-12-19 03:55:38,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830518346] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:55:38,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901757629] [2023-12-19 03:55:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:38,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:38,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:55:38,912 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) [2023-12-19 03:55:38,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 03:55:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:39,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:55:39,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:55:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-19 03:55:39,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:55:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901757629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:39,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:55:39,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:55:39,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389316674] [2023-12-19 03:55:39,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:39,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:39,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:39,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:39,175 INFO L87 Difference]: Start difference. First operand 76788 states and 85135 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:42,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:42,121 INFO L93 Difference]: Finished difference Result 152786 states and 169476 transitions. [2023-12-19 03:55:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:42,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 390 [2023-12-19 03:55:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:42,211 INFO L225 Difference]: With dead ends: 152786 [2023-12-19 03:55:42,211 INFO L226 Difference]: Without dead ends: 76786 [2023-12-19 03:55:42,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:42,248 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1084 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:42,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1419 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:55:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76786 states. [2023-12-19 03:55:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76786 to 76785. [2023-12-19 03:55:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76785 states, 76784 states have (on average 1.0866196082517192) internal successors, (83435), 76784 states have internal predecessors, (83435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76785 states to 76785 states and 83435 transitions. [2023-12-19 03:55:43,202 INFO L78 Accepts]: Start accepts. Automaton has 76785 states and 83435 transitions. Word has length 390 [2023-12-19 03:55:43,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:43,203 INFO L495 AbstractCegarLoop]: Abstraction has 76785 states and 83435 transitions. [2023-12-19 03:55:43,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 76785 states and 83435 transitions. [2023-12-19 03:55:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-19 03:55:43,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:43,208 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:43,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 03:55:43,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:43,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:43,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:43,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1525120624, now seen corresponding path program 1 times [2023-12-19 03:55:43,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:43,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903873040] [2023-12-19 03:55:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:43,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-19 03:55:43,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:43,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903873040] [2023-12-19 03:55:43,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903873040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:43,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:43,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:43,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063585537] [2023-12-19 03:55:43,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:43,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:43,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:43,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:43,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:43,768 INFO L87 Difference]: Start difference. First operand 76785 states and 83435 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:47,071 INFO L93 Difference]: Finished difference Result 177190 states and 193903 transitions. [2023-12-19 03:55:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2023-12-19 03:55:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:47,202 INFO L225 Difference]: With dead ends: 177190 [2023-12-19 03:55:47,203 INFO L226 Difference]: Without dead ends: 101193 [2023-12-19 03:55:47,344 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 [2023-12-19 03:55:47,344 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 887 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:47,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 893 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:55:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101193 states. [2023-12-19 03:55:48,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101193 to 99601. [2023-12-19 03:55:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99601 states, 99600 states have (on average 1.0899096385542169) internal successors, (108555), 99600 states have internal predecessors, (108555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99601 states to 99601 states and 108555 transitions. [2023-12-19 03:55:48,465 INFO L78 Accepts]: Start accepts. Automaton has 99601 states and 108555 transitions. Word has length 391 [2023-12-19 03:55:48,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:48,466 INFO L495 AbstractCegarLoop]: Abstraction has 99601 states and 108555 transitions. [2023-12-19 03:55:48,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:48,466 INFO L276 IsEmpty]: Start isEmpty. Operand 99601 states and 108555 transitions. [2023-12-19 03:55:48,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-19 03:55:48,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:48,475 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:55:48,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 03:55:48,475 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:48,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:48,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1398796469, now seen corresponding path program 1 times [2023-12-19 03:55:48,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:48,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29956479] [2023-12-19 03:55:48,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:48,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 305 proven. 113 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 03:55:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29956479] [2023-12-19 03:55:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29956479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:55:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874391069] [2023-12-19 03:55:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:49,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:55:49,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:55:49,593 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) [2023-12-19 03:55:49,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 03:55:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:49,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:55:49,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:55:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:55:49,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:55:49,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874391069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:49,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:55:49,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:55:49,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282933608] [2023-12-19 03:55:49,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:49,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:49,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:49,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:49,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:49,913 INFO L87 Difference]: Start difference. First operand 99601 states and 108555 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:53,080 INFO L93 Difference]: Finished difference Result 195241 states and 214130 transitions. [2023-12-19 03:55:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:53,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 465 [2023-12-19 03:55:53,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:53,232 INFO L225 Difference]: With dead ends: 195241 [2023-12-19 03:55:53,232 INFO L226 Difference]: Without dead ends: 111389 [2023-12-19 03:55:53,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:55:53,278 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1132 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:53,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 394 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:55:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111389 states. [2023-12-19 03:55:54,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111389 to 111389. [2023-12-19 03:55:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111389 states, 111388 states have (on average 1.082558264804108) internal successors, (120584), 111388 states have internal predecessors, (120584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111389 states to 111389 states and 120584 transitions. [2023-12-19 03:55:54,658 INFO L78 Accepts]: Start accepts. Automaton has 111389 states and 120584 transitions. Word has length 465 [2023-12-19 03:55:54,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:55:54,658 INFO L495 AbstractCegarLoop]: Abstraction has 111389 states and 120584 transitions. [2023-12-19 03:55:54,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 111389 states and 120584 transitions. [2023-12-19 03:55:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-12-19 03:55:54,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:55:54,668 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:55:54,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 03:55:54,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 03:55:54,874 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:55:54,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:55:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash -35916471, now seen corresponding path program 1 times [2023-12-19 03:55:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:55:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120925785] [2023-12-19 03:55:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:55:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:55:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:55:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 03:55:55,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:55:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120925785] [2023-12-19 03:55:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120925785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:55:55,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:55:55,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:55:55,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618879393] [2023-12-19 03:55:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:55:55,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:55:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:55:55,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:55:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:55:55,309 INFO L87 Difference]: Start difference. First operand 111389 states and 120584 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:55:58,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:55:58,825 INFO L93 Difference]: Finished difference Result 245598 states and 266946 transitions. [2023-12-19 03:55:58,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:55:58,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 483 [2023-12-19 03:55:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:55:58,995 INFO L225 Difference]: With dead ends: 245598 [2023-12-19 03:55:58,995 INFO L226 Difference]: Without dead ends: 133423 [2023-12-19 03:55:59,062 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 [2023-12-19 03:55:59,063 INFO L413 NwaCegarLoop]: 1708 mSDtfsCounter, 726 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:55:59,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1843 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:55:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133423 states. [2023-12-19 03:56:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133423 to 133410. [2023-12-19 03:56:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133410 states, 133409 states have (on average 1.0704675096882519) internal successors, (142810), 133409 states have internal predecessors, (142810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133410 states to 133410 states and 142810 transitions. [2023-12-19 03:56:00,745 INFO L78 Accepts]: Start accepts. Automaton has 133410 states and 142810 transitions. Word has length 483 [2023-12-19 03:56:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:00,746 INFO L495 AbstractCegarLoop]: Abstraction has 133410 states and 142810 transitions. [2023-12-19 03:56:00,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 133410 states and 142810 transitions. [2023-12-19 03:56:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2023-12-19 03:56:00,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:00,767 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:56:00,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 03:56:00,767 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:00,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1930384442, now seen corresponding path program 1 times [2023-12-19 03:56:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166930445] [2023-12-19 03:56:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:00,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 379 proven. 110 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 03:56:01,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166930445] [2023-12-19 03:56:01,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166930445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:56:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960953924] [2023-12-19 03:56:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:01,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:56:01,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:56:01,869 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) [2023-12-19 03:56:01,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 03:56:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:02,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:56:02,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:56:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 365 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-19 03:56:02,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:56:02,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960953924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:02,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:56:02,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-19 03:56:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786211218] [2023-12-19 03:56:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:56:02,790 INFO L87 Difference]: Start difference. First operand 133410 states and 142810 transitions. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:05,647 INFO L93 Difference]: Finished difference Result 252660 states and 271026 transitions. [2023-12-19 03:56:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:05,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 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 596 [2023-12-19 03:56:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:05,793 INFO L225 Difference]: With dead ends: 252660 [2023-12-19 03:56:05,793 INFO L226 Difference]: Without dead ends: 136569 [2023-12-19 03:56:05,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:56:05,868 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 543 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:05,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1116 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 03:56:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136569 states. [2023-12-19 03:56:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136569 to 136559. [2023-12-19 03:56:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136559 states, 136558 states have (on average 1.063313756791986) internal successors, (145204), 136558 states have internal predecessors, (145204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136559 states to 136559 states and 145204 transitions. [2023-12-19 03:56:07,456 INFO L78 Accepts]: Start accepts. Automaton has 136559 states and 145204 transitions. Word has length 596 [2023-12-19 03:56:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:07,456 INFO L495 AbstractCegarLoop]: Abstraction has 136559 states and 145204 transitions. [2023-12-19 03:56:07,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 2 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 136559 states and 145204 transitions. [2023-12-19 03:56:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-12-19 03:56:07,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:07,494 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:56:07,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 03:56:07,694 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,SelfDestructingSolverStorable16 [2023-12-19 03:56:07,695 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:07,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:07,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1555908554, now seen corresponding path program 1 times [2023-12-19 03:56:07,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:07,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982539073] [2023-12-19 03:56:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:07,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 845 proven. 75 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-12-19 03:56:08,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982539073] [2023-12-19 03:56:08,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982539073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:56:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845604145] [2023-12-19 03:56:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:08,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:56:08,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:56:08,822 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) [2023-12-19 03:56:08,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 03:56:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:09,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:56:09,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:56:09,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-19 03:56:09,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:56:09,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845604145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:09,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:56:09,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-19 03:56:09,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544981957] [2023-12-19 03:56:09,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:09,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:56:09,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:09,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:56:09,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:56:09,800 INFO L87 Difference]: Start difference. First operand 136559 states and 145204 transitions. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:13,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:13,561 INFO L93 Difference]: Finished difference Result 257373 states and 274438 transitions. [2023-12-19 03:56:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:56:13,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 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 729 [2023-12-19 03:56:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:13,733 INFO L225 Difference]: With dead ends: 257373 [2023-12-19 03:56:13,734 INFO L226 Difference]: Without dead ends: 139710 [2023-12-19 03:56:13,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 03:56:13,797 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 2309 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 3731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:13,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 774 Invalid, 3731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:56:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139710 states. [2023-12-19 03:56:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139710 to 137342. [2023-12-19 03:56:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137342 states, 137341 states have (on average 1.0624139914519335) internal successors, (145913), 137341 states have internal predecessors, (145913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137342 states to 137342 states and 145913 transitions. [2023-12-19 03:56:15,334 INFO L78 Accepts]: Start accepts. Automaton has 137342 states and 145913 transitions. Word has length 729 [2023-12-19 03:56:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:15,335 INFO L495 AbstractCegarLoop]: Abstraction has 137342 states and 145913 transitions. [2023-12-19 03:56:15,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:15,335 INFO L276 IsEmpty]: Start isEmpty. Operand 137342 states and 145913 transitions. [2023-12-19 03:56:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2023-12-19 03:56:15,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:15,370 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:56:15,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 03:56:15,575 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 [2023-12-19 03:56:15,576 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:15,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1369195601, now seen corresponding path program 1 times [2023-12-19 03:56:15,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:15,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382262623] [2023-12-19 03:56:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:15,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-19 03:56:16,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382262623] [2023-12-19 03:56:16,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382262623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:16,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:16,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327720224] [2023-12-19 03:56:16,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:16,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:16,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:16,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:16,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:16,596 INFO L87 Difference]: Start difference. First operand 137342 states and 145913 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:19,650 INFO L93 Difference]: Finished difference Result 259735 states and 276689 transitions. [2023-12-19 03:56:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:19,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 778 [2023-12-19 03:56:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:19,844 INFO L225 Difference]: With dead ends: 259735 [2023-12-19 03:56:19,844 INFO L226 Difference]: Without dead ends: 141289 [2023-12-19 03:56:20,073 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 [2023-12-19 03:56:20,074 INFO L413 NwaCegarLoop]: 1730 mSDtfsCounter, 765 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:20,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1893 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:56:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141289 states. [2023-12-19 03:56:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141289 to 141279. [2023-12-19 03:56:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141279 states, 141278 states have (on average 1.0619558600772945) internal successors, (150031), 141278 states have internal predecessors, (150031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141279 states to 141279 states and 150031 transitions. [2023-12-19 03:56:21,660 INFO L78 Accepts]: Start accepts. Automaton has 141279 states and 150031 transitions. Word has length 778 [2023-12-19 03:56:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:21,660 INFO L495 AbstractCegarLoop]: Abstraction has 141279 states and 150031 transitions. [2023-12-19 03:56:21,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:21,661 INFO L276 IsEmpty]: Start isEmpty. Operand 141279 states and 150031 transitions. [2023-12-19 03:56:21,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2023-12-19 03:56:21,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:21,979 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:56:21,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 03:56:21,979 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:21,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash 324839130, now seen corresponding path program 1 times [2023-12-19 03:56:21,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:21,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361724327] [2023-12-19 03:56:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:21,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 911 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-12-19 03:56:22,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:22,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361724327] [2023-12-19 03:56:22,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361724327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:22,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:22,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 03:56:22,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571129255] [2023-12-19 03:56:22,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:22,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:56:22,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:56:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:56:22,656 INFO L87 Difference]: Start difference. First operand 141279 states and 150031 transitions. Second operand has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:29,115 INFO L93 Difference]: Finished difference Result 378794 states and 403129 transitions. [2023-12-19 03:56:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:56:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 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 787 [2023-12-19 03:56:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:29,682 INFO L225 Difference]: With dead ends: 378794 [2023-12-19 03:56:29,682 INFO L226 Difference]: Without dead ends: 238303 [2023-12-19 03:56:29,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:56:29,736 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1710 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 6319 mSolverCounterSat, 991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 7310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 6319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:29,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 959 Invalid, 7310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 6319 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 03:56:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238303 states. [2023-12-19 03:56:31,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238303 to 193255. [2023-12-19 03:56:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193255 states, 193254 states have (on average 1.059548573380111) internal successors, (204762), 193254 states have internal predecessors, (204762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:32,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193255 states to 193255 states and 204762 transitions. [2023-12-19 03:56:32,514 INFO L78 Accepts]: Start accepts. Automaton has 193255 states and 204762 transitions. Word has length 787 [2023-12-19 03:56:32,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:32,515 INFO L495 AbstractCegarLoop]: Abstraction has 193255 states and 204762 transitions. [2023-12-19 03:56:32,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:32,515 INFO L276 IsEmpty]: Start isEmpty. Operand 193255 states and 204762 transitions. [2023-12-19 03:56:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2023-12-19 03:56:32,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:32,549 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:56:32,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 03:56:32,549 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:32,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1307542731, now seen corresponding path program 1 times [2023-12-19 03:56:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824096031] [2023-12-19 03:56:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1478 backedges. 999 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2023-12-19 03:56:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:33,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824096031] [2023-12-19 03:56:33,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824096031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:33,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:33,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:33,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103987779] [2023-12-19 03:56:33,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:33,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:33,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:33,195 INFO L87 Difference]: Start difference. First operand 193255 states and 204762 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:36,690 INFO L93 Difference]: Finished difference Result 388908 states and 411960 transitions. [2023-12-19 03:56:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:36,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 800 [2023-12-19 03:56:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:36,950 INFO L225 Difference]: With dead ends: 388908 [2023-12-19 03:56:36,951 INFO L226 Difference]: Without dead ends: 194077 [2023-12-19 03:56:37,255 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 [2023-12-19 03:56:37,257 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 600 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:37,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1821 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:56:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194077 states. [2023-12-19 03:56:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194077 to 190893. [2023-12-19 03:56:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190893 states, 190892 states have (on average 1.0554449636443644) internal successors, (201476), 190892 states have internal predecessors, (201476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190893 states to 190893 states and 201476 transitions. [2023-12-19 03:56:39,638 INFO L78 Accepts]: Start accepts. Automaton has 190893 states and 201476 transitions. Word has length 800 [2023-12-19 03:56:39,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:39,639 INFO L495 AbstractCegarLoop]: Abstraction has 190893 states and 201476 transitions. [2023-12-19 03:56:39,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:39,639 INFO L276 IsEmpty]: Start isEmpty. Operand 190893 states and 201476 transitions. [2023-12-19 03:56:39,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2023-12-19 03:56:39,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:39,679 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:56:39,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 03:56:39,680 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:39,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:39,680 INFO L85 PathProgramCache]: Analyzing trace with hash 519342582, now seen corresponding path program 1 times [2023-12-19 03:56:39,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:39,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823919657] [2023-12-19 03:56:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:39,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 701 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2023-12-19 03:56:40,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:40,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823919657] [2023-12-19 03:56:40,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823919657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:40,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:40,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:40,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845835919] [2023-12-19 03:56:40,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:40,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:40,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:40,227 INFO L87 Difference]: Start difference. First operand 190893 states and 201476 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:44,345 INFO L93 Difference]: Finished difference Result 411685 states and 436177 transitions. [2023-12-19 03:56:44,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:44,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 806 [2023-12-19 03:56:44,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:45,012 INFO L225 Difference]: With dead ends: 411685 [2023-12-19 03:56:45,012 INFO L226 Difference]: Without dead ends: 230234 [2023-12-19 03:56:45,042 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 [2023-12-19 03:56:45,043 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 762 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:45,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 895 Invalid, 3130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:56:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230234 states. [2023-12-19 03:56:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230234 to 183003. [2023-12-19 03:56:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183003 states, 183002 states have (on average 1.0532179976175124) internal successors, (192741), 183002 states have internal predecessors, (192741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183003 states to 183003 states and 192741 transitions. [2023-12-19 03:56:47,384 INFO L78 Accepts]: Start accepts. Automaton has 183003 states and 192741 transitions. Word has length 806 [2023-12-19 03:56:47,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:47,384 INFO L495 AbstractCegarLoop]: Abstraction has 183003 states and 192741 transitions. [2023-12-19 03:56:47,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 183003 states and 192741 transitions. [2023-12-19 03:56:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2023-12-19 03:56:47,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:47,728 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:56:47,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 03:56:47,729 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:47,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:47,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1260347530, now seen corresponding path program 1 times [2023-12-19 03:56:47,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:47,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472839078] [2023-12-19 03:56:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:47,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 763 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2023-12-19 03:56:48,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:48,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472839078] [2023-12-19 03:56:48,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472839078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:48,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:48,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754014277] [2023-12-19 03:56:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:48,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:48,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:48,292 INFO L87 Difference]: Start difference. First operand 183003 states and 192741 transitions. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:52,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:52,276 INFO L93 Difference]: Finished difference Result 381719 states and 402937 transitions. [2023-12-19 03:56:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:52,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 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 860 [2023-12-19 03:56:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:56:52,674 INFO L225 Difference]: With dead ends: 381719 [2023-12-19 03:56:52,675 INFO L226 Difference]: Without dead ends: 219185 [2023-12-19 03:56:52,765 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 [2023-12-19 03:56:52,766 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 855 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 3210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:56:52,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 525 Invalid, 3210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [950 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:56:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219185 states. [2023-12-19 03:56:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219185 to 216823. [2023-12-19 03:56:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216823 states, 216822 states have (on average 1.0501794098384851) internal successors, (227702), 216822 states have internal predecessors, (227702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216823 states to 216823 states and 227702 transitions. [2023-12-19 03:56:55,620 INFO L78 Accepts]: Start accepts. Automaton has 216823 states and 227702 transitions. Word has length 860 [2023-12-19 03:56:55,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:56:55,621 INFO L495 AbstractCegarLoop]: Abstraction has 216823 states and 227702 transitions. [2023-12-19 03:56:55,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:55,621 INFO L276 IsEmpty]: Start isEmpty. Operand 216823 states and 227702 transitions. [2023-12-19 03:56:55,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2023-12-19 03:56:55,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:56:55,682 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:56:55,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 03:56:55,682 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:56:55,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:56:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash -136093984, now seen corresponding path program 1 times [2023-12-19 03:56:55,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:56:55,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862748115] [2023-12-19 03:56:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:56:55,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:56:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:56:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1165 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-12-19 03:56:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:56:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862748115] [2023-12-19 03:56:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862748115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:56:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:56:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:56:56,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645861489] [2023-12-19 03:56:56,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:56:56,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:56:56,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:56:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:56:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:56:56,282 INFO L87 Difference]: Start difference. First operand 216823 states and 227702 transitions. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:56:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:56:59,754 INFO L93 Difference]: Finished difference Result 427332 states and 448924 transitions. [2023-12-19 03:56:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:56:59,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 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 949 [2023-12-19 03:56:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:57:00,072 INFO L225 Difference]: With dead ends: 427332 [2023-12-19 03:57:00,072 INFO L226 Difference]: Without dead ends: 211297 [2023-12-19 03:57:00,174 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 [2023-12-19 03:57:00,175 INFO L413 NwaCegarLoop]: 1308 mSDtfsCounter, 907 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:57:00,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1377 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:57:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211297 states. [2023-12-19 03:57:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211297 to 210498. [2023-12-19 03:57:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210498 states, 210497 states have (on average 1.0385563689743798) internal successors, (218613), 210497 states have internal predecessors, (218613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:57:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210498 states to 210498 states and 218613 transitions. [2023-12-19 03:57:03,082 INFO L78 Accepts]: Start accepts. Automaton has 210498 states and 218613 transitions. Word has length 949 [2023-12-19 03:57:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:57:03,082 INFO L495 AbstractCegarLoop]: Abstraction has 210498 states and 218613 transitions. [2023-12-19 03:57:03,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:57:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 210498 states and 218613 transitions. [2023-12-19 03:57:03,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2023-12-19 03:57:03,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:57:03,133 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:57:03,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 03:57:03,144 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:57:03,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:57:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2035541457, now seen corresponding path program 1 times [2023-12-19 03:57:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:57:03,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203370382] [2023-12-19 03:57:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:03,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:57:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-19 03:57:04,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:57:04,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203370382] [2023-12-19 03:57:04,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203370382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:57:04,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:57:04,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:57:04,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965089224] [2023-12-19 03:57:04,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:57:04,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:57:04,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:57:04,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:57:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:57:04,267 INFO L87 Difference]: Start difference. First operand 210498 states and 218613 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:57:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:57:08,281 INFO L93 Difference]: Finished difference Result 423395 states and 440570 transitions. [2023-12-19 03:57:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:57:08,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 978 [2023-12-19 03:57:08,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:57:08,634 INFO L225 Difference]: With dead ends: 423395 [2023-12-19 03:57:08,635 INFO L226 Difference]: Without dead ends: 232579 [2023-12-19 03:57:08,726 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 [2023-12-19 03:57:08,726 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 803 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:57:08,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1749 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:57:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232579 states. [2023-12-19 03:57:11,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232579 to 227034. [2023-12-19 03:57:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227034 states, 227033 states have (on average 1.0367039152898476) internal successors, (235366), 227033 states have internal predecessors, (235366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:57:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227034 states to 227034 states and 235366 transitions. [2023-12-19 03:57:11,606 INFO L78 Accepts]: Start accepts. Automaton has 227034 states and 235366 transitions. Word has length 978 [2023-12-19 03:57:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:57:11,606 INFO L495 AbstractCegarLoop]: Abstraction has 227034 states and 235366 transitions. [2023-12-19 03:57:11,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:57:11,606 INFO L276 IsEmpty]: Start isEmpty. Operand 227034 states and 235366 transitions. [2023-12-19 03:57:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2023-12-19 03:57:11,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:57:11,683 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 03:57:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 03:57:11,684 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:57:11,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:57:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash -384472666, now seen corresponding path program 1 times [2023-12-19 03:57:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:57:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517733150] [2023-12-19 03:57:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:11,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:57:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:57:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 673 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 03:57:13,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:57:13,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517733150] [2023-12-19 03:57:13,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517733150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:57:13,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456696933] [2023-12-19 03:57:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:57:13,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:57:13,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:57:13,567 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) [2023-12-19 03:57:13,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process