/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/Problem03_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 02:00:06,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 02:00:06,961 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 02:00:06,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 02:00:06,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 02:00:06,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 02:00:06,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 02:00:06,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 02:00:06,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 02:00:06,993 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 02:00:06,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 02:00:06,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 02:00:06,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 02:00:06,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 02:00:06,995 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 02:00:06,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 02:00:06,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 02:00:06,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 02:00:06,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 02:00:06,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 02:00:06,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 02:00:06,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 02:00:06,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 02:00:06,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 02:00:06,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 02:00:06,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 02:00:06,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 02:00:06,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 02:00:06,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 02:00:06,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 02:00:06,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 02:00:06,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 02:00:06,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 02:00:06,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 02:00:06,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 02:00:06,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 02:00:07,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 02:00:07,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 02:00:07,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 02:00:07,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 02:00:07,000 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 02:00:07,000 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 02:00:07,000 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 02:00:07,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 02:00:07,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 02:00:07,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 02:00:07,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 02:00:07,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 02:00:07,242 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 02:00:07,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label47.c [2023-12-19 02:00:08,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 02:00:08,623 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 02:00:08,624 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label47.c [2023-12-19 02:00:08,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c5b6e88/7990792e435947e28182c4f108f62fbb/FLAG224d4999f [2023-12-19 02:00:08,653 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c5b6e88/7990792e435947e28182c4f108f62fbb [2023-12-19 02:00:08,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 02:00:08,656 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 02:00:08,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 02:00:08,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 02:00:08,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 02:00:08,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:00:08" (1/1) ... [2023-12-19 02:00:08,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57be4de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:08, skipping insertion in model container [2023-12-19 02:00:08,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:00:08" (1/1) ... [2023-12-19 02:00:08,737 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 02:00:09,244 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/Problem03_label47.c[60825,60838] [2023-12-19 02:00:09,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 02:00:09,279 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 02:00:09,456 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/Problem03_label47.c[60825,60838] [2023-12-19 02:00:09,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 02:00:09,476 INFO L206 MainTranslator]: Completed translation [2023-12-19 02:00:09,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09 WrapperNode [2023-12-19 02:00:09,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 02:00:09,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 02:00:09,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 02:00:09,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 02:00:09,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,585 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-19 02:00:09,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 02:00:09,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 02:00:09,586 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 02:00:09,586 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 02:00:09,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,646 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 02:00:09,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 02:00:09,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 02:00:09,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 02:00:09,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 02:00:09,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (1/1) ... [2023-12-19 02:00:09,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 02:00:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:00:09,787 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 02:00:09,791 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 02:00:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 02:00:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 02:00:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 02:00:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 02:00:09,901 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 02:00:09,903 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 02:00:11,144 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 02:00:11,178 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 02:00:11,179 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 02:00:11,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:00:11 BoogieIcfgContainer [2023-12-19 02:00:11,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 02:00:11,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 02:00:11,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 02:00:11,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 02:00:11,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:00:08" (1/3) ... [2023-12-19 02:00:11,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38573c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:00:11, skipping insertion in model container [2023-12-19 02:00:11,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:00:09" (2/3) ... [2023-12-19 02:00:11,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38573c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:00:11, skipping insertion in model container [2023-12-19 02:00:11,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:00:11" (3/3) ... [2023-12-19 02:00:11,188 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label47.c [2023-12-19 02:00:11,200 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 02:00:11,201 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 02:00:11,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 02:00:11,240 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;@27e1d65f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 02:00:11,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 02:00:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 02:00:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-19 02:00:11,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:11,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:11,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:11,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:11,261 INFO L85 PathProgramCache]: Analyzing trace with hash 989673365, now seen corresponding path program 1 times [2023-12-19 02:00:11,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:11,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740062038] [2023-12-19 02:00:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:11,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:11,721 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 02:00:11,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:11,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740062038] [2023-12-19 02:00:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740062038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:11,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:11,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:11,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181382025] [2023-12-19 02:00:11,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:11,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 02:00:11,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 02:00:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 02:00:11,777 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 02:00:11,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:11,830 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-19 02:00:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 02:00:11,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-19 02:00:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:11,840 INFO L225 Difference]: With dead ends: 479 [2023-12-19 02:00:11,840 INFO L226 Difference]: Without dead ends: 238 [2023-12-19 02:00:11,843 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 02:00:11,845 INFO L413 NwaCegarLoop]: 392 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, 392 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 02:00:11,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 02:00:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-19 02:00:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-19 02:00:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 02:00:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-19 02:00:11,886 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 196 [2023-12-19 02:00:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:11,887 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-19 02:00:11,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 02:00:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-19 02:00:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-19 02:00:11,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:11,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 02:00:11,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:11,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1113992718, now seen corresponding path program 1 times [2023-12-19 02:00:11,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:11,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847722107] [2023-12-19 02:00:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:11,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:12,401 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 02:00:12,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:12,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847722107] [2023-12-19 02:00:12,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847722107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:12,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:12,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:12,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048735787] [2023-12-19 02:00:12,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:12,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:12,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:12,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:12,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:12,411 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 02:00:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:13,193 INFO L93 Difference]: Finished difference Result 692 states and 1147 transitions. [2023-12-19 02:00:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-19 02:00:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:13,197 INFO L225 Difference]: With dead ends: 692 [2023-12-19 02:00:13,197 INFO L226 Difference]: Without dead ends: 455 [2023-12-19 02:00:13,198 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 02:00:13,199 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 59 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:13,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 122 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:00:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-19 02:00:13,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 450. [2023-12-19 02:00:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.5634743875278396) internal successors, (702), 449 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 02:00:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 702 transitions. [2023-12-19 02:00:13,223 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 702 transitions. Word has length 196 [2023-12-19 02:00:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:13,224 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 702 transitions. [2023-12-19 02:00:13,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 02:00:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 702 transitions. [2023-12-19 02:00:13,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-12-19 02:00:13,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:13,227 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 02:00:13,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 02:00:13,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:13,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1149030656, now seen corresponding path program 1 times [2023-12-19 02:00:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682101906] [2023-12-19 02:00:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:00:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682101906] [2023-12-19 02:00:13,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682101906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:13,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:13,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251307127] [2023-12-19 02:00:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:13,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:13,443 INFO L87 Difference]: Start difference. First operand 450 states and 702 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 02:00:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:14,056 INFO L93 Difference]: Finished difference Result 1339 states and 2093 transitions. [2023-12-19 02:00:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2023-12-19 02:00:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:14,059 INFO L225 Difference]: With dead ends: 1339 [2023-12-19 02:00:14,059 INFO L226 Difference]: Without dead ends: 890 [2023-12-19 02:00:14,061 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 02:00:14,063 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:14,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 152 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:00:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-19 02:00:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 886. [2023-12-19 02:00:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.5480225988700564) internal successors, (1370), 885 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states 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 02:00:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1370 transitions. [2023-12-19 02:00:14,104 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1370 transitions. Word has length 202 [2023-12-19 02:00:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:14,104 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1370 transitions. [2023-12-19 02:00:14,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 02:00:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1370 transitions. [2023-12-19 02:00:14,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-19 02:00:14,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:14,107 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 02:00:14,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 02:00:14,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:14,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:14,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1804480692, now seen corresponding path program 1 times [2023-12-19 02:00:14,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:14,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30978429] [2023-12-19 02:00:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:14,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:14,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:00:14,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:14,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30978429] [2023-12-19 02:00:14,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30978429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:14,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:14,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:14,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168982093] [2023-12-19 02:00:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:14,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:14,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:14,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:14,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:14,365 INFO L87 Difference]: Start difference. First operand 886 states and 1370 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 02:00:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:14,914 INFO L93 Difference]: Finished difference Result 2611 states and 4041 transitions. [2023-12-19 02:00:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:14,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2023-12-19 02:00:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:14,920 INFO L225 Difference]: With dead ends: 2611 [2023-12-19 02:00:14,920 INFO L226 Difference]: Without dead ends: 1726 [2023-12-19 02:00:14,922 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 02:00:14,942 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:14,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 110 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:00:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-12-19 02:00:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-12-19 02:00:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 1.4730121880441092) internal successors, (2538), 1723 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states 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 02:00:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2538 transitions. [2023-12-19 02:00:14,980 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2538 transitions. Word has length 206 [2023-12-19 02:00:14,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:14,981 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 2538 transitions. [2023-12-19 02:00:14,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 02:00:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2538 transitions. [2023-12-19 02:00:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-19 02:00:14,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:14,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-19 02:00:14,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 02:00:14,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:14,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:14,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1760278308, now seen corresponding path program 1 times [2023-12-19 02:00:14,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:14,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854970751] [2023-12-19 02:00:14,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:14,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 02:00:15,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854970751] [2023-12-19 02:00:15,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854970751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:15,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:15,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126663086] [2023-12-19 02:00:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:15,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:15,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:15,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:15,166 INFO L87 Difference]: Start difference. First operand 1724 states and 2538 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 02:00:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:15,774 INFO L93 Difference]: Finished difference Result 5077 states and 7480 transitions. [2023-12-19 02:00:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 208 [2023-12-19 02:00:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:15,784 INFO L225 Difference]: With dead ends: 5077 [2023-12-19 02:00:15,784 INFO L226 Difference]: Without dead ends: 3354 [2023-12-19 02:00:15,787 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 02:00:15,787 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 241 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:15,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 164 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:00:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2023-12-19 02:00:15,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3351. [2023-12-19 02:00:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3351 states, 3350 states have (on average 1.335223880597015) internal successors, (4473), 3350 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states 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 02:00:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4473 transitions. [2023-12-19 02:00:15,844 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4473 transitions. Word has length 208 [2023-12-19 02:00:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:15,844 INFO L495 AbstractCegarLoop]: Abstraction has 3351 states and 4473 transitions. [2023-12-19 02:00:15,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 02:00:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4473 transitions. [2023-12-19 02:00:15,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-19 02:00:15,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:15,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:00:15,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 02:00:15,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:15,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1756419225, now seen corresponding path program 1 times [2023-12-19 02:00:15,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:15,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537927057] [2023-12-19 02:00:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:15,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:00:16,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:16,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537927057] [2023-12-19 02:00:16,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537927057] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:16,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:16,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:16,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52885187] [2023-12-19 02:00:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:16,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:16,056 INFO L87 Difference]: Start difference. First operand 3351 states and 4473 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 02:00:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:16,650 INFO L93 Difference]: Finished difference Result 10018 states and 13380 transitions. [2023-12-19 02:00:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2023-12-19 02:00:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:16,669 INFO L225 Difference]: With dead ends: 10018 [2023-12-19 02:00:16,670 INFO L226 Difference]: Without dead ends: 6668 [2023-12-19 02:00:16,676 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 02:00:16,676 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:16,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 99 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:00:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6668 states. [2023-12-19 02:00:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6668 to 6653. [2023-12-19 02:00:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6653 states, 6652 states have (on average 1.3215574263379435) internal successors, (8791), 6652 states have internal predecessors, (8791), 0 states have call successors, (0), 0 states 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 02:00:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6653 states to 6653 states and 8791 transitions. [2023-12-19 02:00:16,807 INFO L78 Accepts]: Start accepts. Automaton has 6653 states and 8791 transitions. Word has length 208 [2023-12-19 02:00:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:16,807 INFO L495 AbstractCegarLoop]: Abstraction has 6653 states and 8791 transitions. [2023-12-19 02:00:16,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 02:00:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6653 states and 8791 transitions. [2023-12-19 02:00:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-19 02:00:16,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:16,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:16,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 02:00:16,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:16,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1525972413, now seen corresponding path program 1 times [2023-12-19 02:00:16,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:16,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256046280] [2023-12-19 02:00:16,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:16,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:00:17,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256046280] [2023-12-19 02:00:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256046280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:17,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:17,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:17,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036964940] [2023-12-19 02:00:17,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:17,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:17,021 INFO L87 Difference]: Start difference. First operand 6653 states and 8791 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 02:00:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:17,873 INFO L93 Difference]: Finished difference Result 16555 states and 21423 transitions. [2023-12-19 02:00:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:17,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 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 213 [2023-12-19 02:00:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:17,901 INFO L225 Difference]: With dead ends: 16555 [2023-12-19 02:00:17,901 INFO L226 Difference]: Without dead ends: 9903 [2023-12-19 02:00:17,910 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 02:00:17,912 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 210 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:17,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 185 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:00:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9903 states. [2023-12-19 02:00:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9903 to 9901. [2023-12-19 02:00:18,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9901 states, 9900 states have (on average 1.2617171717171718) internal successors, (12491), 9900 states have internal predecessors, (12491), 0 states have call successors, (0), 0 states 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 02:00:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9901 states to 9901 states and 12491 transitions. [2023-12-19 02:00:18,054 INFO L78 Accepts]: Start accepts. Automaton has 9901 states and 12491 transitions. Word has length 213 [2023-12-19 02:00:18,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:18,055 INFO L495 AbstractCegarLoop]: Abstraction has 9901 states and 12491 transitions. [2023-12-19 02:00:18,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 02:00:18,056 INFO L276 IsEmpty]: Start isEmpty. Operand 9901 states and 12491 transitions. [2023-12-19 02:00:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-19 02:00:18,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:18,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:18,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 02:00:18,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:18,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1781006505, now seen corresponding path program 1 times [2023-12-19 02:00:18,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:18,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661817947] [2023-12-19 02:00:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:18,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:00:18,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:18,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661817947] [2023-12-19 02:00:18,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661817947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:18,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:18,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:00:18,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638221815] [2023-12-19 02:00:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:18,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:00:18,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:00:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:00:18,300 INFO L87 Difference]: Start difference. First operand 9901 states and 12491 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:00:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:19,469 INFO L93 Difference]: Finished difference Result 39241 states and 49479 transitions. [2023-12-19 02:00:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:00:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 223 [2023-12-19 02:00:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:19,576 INFO L225 Difference]: With dead ends: 39241 [2023-12-19 02:00:19,576 INFO L226 Difference]: Without dead ends: 29341 [2023-12-19 02:00:19,607 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 02:00:19,607 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 888 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:19,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 111 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 02:00:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29341 states. [2023-12-19 02:00:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29341 to 26076. [2023-12-19 02:00:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26076 states, 26075 states have (on average 1.2580249280920421) internal successors, (32803), 26075 states have internal predecessors, (32803), 0 states have call successors, (0), 0 states 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 02:00:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26076 states to 26076 states and 32803 transitions. [2023-12-19 02:00:20,193 INFO L78 Accepts]: Start accepts. Automaton has 26076 states and 32803 transitions. Word has length 223 [2023-12-19 02:00:20,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:20,193 INFO L495 AbstractCegarLoop]: Abstraction has 26076 states and 32803 transitions. [2023-12-19 02:00:20,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 02:00:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 26076 states and 32803 transitions. [2023-12-19 02:00:20,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 02:00:20,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:20,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:20,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 02:00:20,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:20,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash 648178413, now seen corresponding path program 1 times [2023-12-19 02:00:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:20,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282731437] [2023-12-19 02:00:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:00:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:20,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282731437] [2023-12-19 02:00:20,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282731437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:20,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:20,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699594018] [2023-12-19 02:00:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:20,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:20,653 INFO L87 Difference]: Start difference. First operand 26076 states and 32803 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:00:21,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:21,503 INFO L93 Difference]: Finished difference Result 63201 states and 79769 transitions. [2023-12-19 02:00:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:21,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2023-12-19 02:00:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:21,560 INFO L225 Difference]: With dead ends: 63201 [2023-12-19 02:00:21,560 INFO L226 Difference]: Without dead ends: 37126 [2023-12-19 02:00:21,589 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 02:00:21,592 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:21,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 113 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:00:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37126 states. [2023-12-19 02:00:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37126 to 37069. [2023-12-19 02:00:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37069 states, 37068 states have (on average 1.259981655336139) internal successors, (46705), 37068 states have internal predecessors, (46705), 0 states have call successors, (0), 0 states 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 02:00:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37069 states to 37069 states and 46705 transitions. [2023-12-19 02:00:22,201 INFO L78 Accepts]: Start accepts. Automaton has 37069 states and 46705 transitions. Word has length 226 [2023-12-19 02:00:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:22,202 INFO L495 AbstractCegarLoop]: Abstraction has 37069 states and 46705 transitions. [2023-12-19 02:00:22,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:00:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 37069 states and 46705 transitions. [2023-12-19 02:00:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-19 02:00:22,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:22,299 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:22,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 02:00:22,300 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:22,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2077012733, now seen corresponding path program 1 times [2023-12-19 02:00:22,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:22,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611982099] [2023-12-19 02:00:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:22,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:00:22,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:22,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611982099] [2023-12-19 02:00:22,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611982099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:22,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:22,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:00:22,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645082256] [2023-12-19 02:00:22,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:22,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:00:22,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:22,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:00:22,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:00:22,525 INFO L87 Difference]: Start difference. First operand 37069 states and 46705 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:00:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:23,890 INFO L93 Difference]: Finished difference Result 121302 states and 152831 transitions. [2023-12-19 02:00:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:00:23,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2023-12-19 02:00:23,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:24,177 INFO L225 Difference]: With dead ends: 121302 [2023-12-19 02:00:24,177 INFO L226 Difference]: Without dead ends: 84640 [2023-12-19 02:00:24,235 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 02:00:24,239 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 485 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:24,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 575 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 02:00:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84640 states. [2023-12-19 02:00:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84640 to 84612. [2023-12-19 02:00:25,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84612 states, 84611 states have (on average 1.2258571580527355) internal successors, (103721), 84611 states have internal predecessors, (103721), 0 states have call successors, (0), 0 states 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 02:00:25,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84612 states to 84612 states and 103721 transitions. [2023-12-19 02:00:25,626 INFO L78 Accepts]: Start accepts. Automaton has 84612 states and 103721 transitions. Word has length 241 [2023-12-19 02:00:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:25,627 INFO L495 AbstractCegarLoop]: Abstraction has 84612 states and 103721 transitions. [2023-12-19 02:00:25,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:00:25,627 INFO L276 IsEmpty]: Start isEmpty. Operand 84612 states and 103721 transitions. [2023-12-19 02:00:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-19 02:00:25,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:25,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:25,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 02:00:25,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:25,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2032688464, now seen corresponding path program 1 times [2023-12-19 02:00:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:25,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385109073] [2023-12-19 02:00:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:25,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:00:25,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:25,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385109073] [2023-12-19 02:00:25,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385109073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:25,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:25,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919140496] [2023-12-19 02:00:25,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:25,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:25,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:25,957 INFO L87 Difference]: Start difference. First operand 84612 states and 103721 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 02:00:27,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:27,553 INFO L93 Difference]: Finished difference Result 229892 states and 282741 transitions. [2023-12-19 02:00:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:27,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2023-12-19 02:00:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:27,804 INFO L225 Difference]: With dead ends: 229892 [2023-12-19 02:00:27,804 INFO L226 Difference]: Without dead ends: 146093 [2023-12-19 02:00:27,878 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 02:00:27,878 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 237 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:27,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 145 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:00:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146093 states. [2023-12-19 02:00:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146093 to 146033. [2023-12-19 02:00:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146033 states, 146032 states have (on average 1.2229100471129615) internal successors, (178584), 146032 states have internal predecessors, (178584), 0 states have call successors, (0), 0 states 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 02:00:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146033 states to 146033 states and 178584 transitions. [2023-12-19 02:00:30,249 INFO L78 Accepts]: Start accepts. Automaton has 146033 states and 178584 transitions. Word has length 250 [2023-12-19 02:00:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:30,249 INFO L495 AbstractCegarLoop]: Abstraction has 146033 states and 178584 transitions. [2023-12-19 02:00:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 02:00:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 146033 states and 178584 transitions. [2023-12-19 02:00:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-19 02:00:30,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:30,273 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:30,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 02:00:30,273 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:30,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash -496776377, now seen corresponding path program 1 times [2023-12-19 02:00:30,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:30,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433314940] [2023-12-19 02:00:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:30,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 02:00:30,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:30,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433314940] [2023-12-19 02:00:30,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433314940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:30,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:30,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:30,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368496082] [2023-12-19 02:00:30,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:30,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:30,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:30,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:30,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:30,646 INFO L87 Difference]: Start difference. First operand 146033 states and 178584 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:00:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:32,771 INFO L93 Difference]: Finished difference Result 399901 states and 488594 transitions. [2023-12-19 02:00:32,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:32,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2023-12-19 02:00:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:33,660 INFO L225 Difference]: With dead ends: 399901 [2023-12-19 02:00:33,661 INFO L226 Difference]: Without dead ends: 254681 [2023-12-19 02:00:33,791 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 02:00:33,792 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 222 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:33,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 144 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:00:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254681 states. [2023-12-19 02:00:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254681 to 240638. [2023-12-19 02:00:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240638 states, 240637 states have (on average 1.2161097420596167) internal successors, (292641), 240637 states have internal predecessors, (292641), 0 states have call successors, (0), 0 states 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 02:00:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240638 states to 240638 states and 292641 transitions. [2023-12-19 02:00:38,195 INFO L78 Accepts]: Start accepts. Automaton has 240638 states and 292641 transitions. Word has length 254 [2023-12-19 02:00:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:38,196 INFO L495 AbstractCegarLoop]: Abstraction has 240638 states and 292641 transitions. [2023-12-19 02:00:38,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:00:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 240638 states and 292641 transitions. [2023-12-19 02:00:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-19 02:00:38,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:38,242 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, 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] [2023-12-19 02:00:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 02:00:38,243 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:38,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash -645477354, now seen corresponding path program 1 times [2023-12-19 02:00:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:38,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865202328] [2023-12-19 02:00:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:38,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 02:00:38,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:38,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865202328] [2023-12-19 02:00:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865202328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:38,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:38,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205695522] [2023-12-19 02:00:38,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:38,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:38,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:38,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:38,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:38,502 INFO L87 Difference]: Start difference. First operand 240638 states and 292641 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 02:00:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:41,153 INFO L93 Difference]: Finished difference Result 485136 states and 589455 transitions. [2023-12-19 02:00:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:41,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 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 260 [2023-12-19 02:00:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:41,608 INFO L225 Difference]: With dead ends: 485136 [2023-12-19 02:00:41,608 INFO L226 Difference]: Without dead ends: 245514 [2023-12-19 02:00:41,698 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 02:00:41,700 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 182 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:41,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 189 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:00:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245514 states. [2023-12-19 02:00:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245514 to 245510. [2023-12-19 02:00:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245510 states, 245509 states have (on average 1.2135155941330054) internal successors, (297929), 245509 states have internal predecessors, (297929), 0 states have call successors, (0), 0 states 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 02:00:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245510 states to 245510 states and 297929 transitions. [2023-12-19 02:00:45,767 INFO L78 Accepts]: Start accepts. Automaton has 245510 states and 297929 transitions. Word has length 260 [2023-12-19 02:00:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:45,768 INFO L495 AbstractCegarLoop]: Abstraction has 245510 states and 297929 transitions. [2023-12-19 02:00:45,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 02:00:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 245510 states and 297929 transitions. [2023-12-19 02:00:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-19 02:00:45,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:45,801 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 02:00:45,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 02:00:45,801 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:45,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1787288874, now seen corresponding path program 1 times [2023-12-19 02:00:45,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:45,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696793266] [2023-12-19 02:00:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:45,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 02:00:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696793266] [2023-12-19 02:00:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696793266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:00:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113536163] [2023-12-19 02:00:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:46,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:00:46,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:00:46,058 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 02:00:46,061 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 02:00:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:46,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:00:46,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:00:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-19 02:00:46,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:00:46,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113536163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:46,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:00:46,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 02:00:46,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845919552] [2023-12-19 02:00:46,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:46,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:00:46,933 INFO L87 Difference]: Start difference. First operand 245510 states and 297929 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 02:00:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:00:49,969 INFO L93 Difference]: Finished difference Result 592704 states and 726740 transitions. [2023-12-19 02:00:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:00:49,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 261 [2023-12-19 02:00:49,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:00:50,665 INFO L225 Difference]: With dead ends: 592704 [2023-12-19 02:00:50,666 INFO L226 Difference]: Without dead ends: 348616 [2023-12-19 02:00:51,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:00:51,146 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 71 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:00:51,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 133 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:00:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348616 states. [2023-12-19 02:00:55,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348616 to 287531. [2023-12-19 02:00:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287531 states, 287530 states have (on average 1.2118804994261467) internal successors, (348452), 287530 states have internal predecessors, (348452), 0 states have call successors, (0), 0 states 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 02:00:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287531 states to 287531 states and 348452 transitions. [2023-12-19 02:00:56,316 INFO L78 Accepts]: Start accepts. Automaton has 287531 states and 348452 transitions. Word has length 261 [2023-12-19 02:00:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:00:56,316 INFO L495 AbstractCegarLoop]: Abstraction has 287531 states and 348452 transitions. [2023-12-19 02:00:56,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 02:00:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 287531 states and 348452 transitions. [2023-12-19 02:00:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-19 02:00:56,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:00:56,335 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 02:00:56,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 02:00:56,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-19 02:00:56,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:00:56,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:00:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1471438516, now seen corresponding path program 1 times [2023-12-19 02:00:56,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:00:56,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813070329] [2023-12-19 02:00:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:00:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:00:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:00:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:00:57,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:00:57,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813070329] [2023-12-19 02:00:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813070329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:00:57,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:00:57,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:00:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455865822] [2023-12-19 02:00:57,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:00:57,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:00:57,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:00:57,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:00:57,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:00:57,083 INFO L87 Difference]: Start difference. First operand 287531 states and 348452 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 02:01:00,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:00,477 INFO L93 Difference]: Finished difference Result 771856 states and 935932 transitions. [2023-12-19 02:01:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:00,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 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 274 [2023-12-19 02:01:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:02,184 INFO L225 Difference]: With dead ends: 771856 [2023-12-19 02:01:02,184 INFO L226 Difference]: Without dead ends: 485544 [2023-12-19 02:01:02,511 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 02:01:02,512 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 176 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:02,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 221 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:01:03,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485544 states. [2023-12-19 02:01:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485544 to 484093. [2023-12-19 02:01:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484093 states, 484092 states have (on average 1.1918147790089486) internal successors, (576948), 484092 states have internal predecessors, (576948), 0 states have call successors, (0), 0 states 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 02:01:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484093 states to 484093 states and 576948 transitions. [2023-12-19 02:01:10,367 INFO L78 Accepts]: Start accepts. Automaton has 484093 states and 576948 transitions. Word has length 274 [2023-12-19 02:01:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:10,367 INFO L495 AbstractCegarLoop]: Abstraction has 484093 states and 576948 transitions. [2023-12-19 02:01:10,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 02:01:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 484093 states and 576948 transitions. [2023-12-19 02:01:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-12-19 02:01:10,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:10,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 02:01:10,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 02:01:10,397 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:10,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1368899763, now seen corresponding path program 1 times [2023-12-19 02:01:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:10,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120943582] [2023-12-19 02:01:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:01:10,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:10,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120943582] [2023-12-19 02:01:10,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120943582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:10,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:10,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:10,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765258027] [2023-12-19 02:01:10,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:10,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:10,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:10,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:10,932 INFO L87 Difference]: Start difference. First operand 484093 states and 576948 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 02:01:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:15,943 INFO L93 Difference]: Finished difference Result 1096547 states and 1309259 transitions. [2023-12-19 02:01:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:15,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 286 [2023-12-19 02:01:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:17,163 INFO L225 Difference]: With dead ends: 1096547 [2023-12-19 02:01:17,163 INFO L226 Difference]: Without dead ends: 613876 [2023-12-19 02:01:17,714 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 02:01:17,718 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 206 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:17,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 371 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:01:18,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613876 states. [2023-12-19 02:01:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613876 to 606746. [2023-12-19 02:01:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606746 states, 606745 states have (on average 1.1494021376360746) internal successors, (697394), 606745 states have internal predecessors, (697394), 0 states have call successors, (0), 0 states 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 02:01:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606746 states to 606746 states and 697394 transitions. [2023-12-19 02:01:29,487 INFO L78 Accepts]: Start accepts. Automaton has 606746 states and 697394 transitions. Word has length 286 [2023-12-19 02:01:29,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:29,487 INFO L495 AbstractCegarLoop]: Abstraction has 606746 states and 697394 transitions. [2023-12-19 02:01:29,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 02:01:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 606746 states and 697394 transitions. [2023-12-19 02:01:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-19 02:01:29,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:29,536 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 02:01:29,537 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:29,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1112097334, now seen corresponding path program 1 times [2023-12-19 02:01:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:29,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648156727] [2023-12-19 02:01:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 02:01:30,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:30,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648156727] [2023-12-19 02:01:30,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648156727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:30,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:30,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:30,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797102490] [2023-12-19 02:01:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:30,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:30,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:30,076 INFO L87 Difference]: Start difference. First operand 606746 states and 697394 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 02:01:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:36,392 INFO L93 Difference]: Finished difference Result 1250944 states and 1440247 transitions. [2023-12-19 02:01:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:36,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 317 [2023-12-19 02:01:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:38,786 INFO L225 Difference]: With dead ends: 1250944 [2023-12-19 02:01:38,786 INFO L226 Difference]: Without dead ends: 645620 [2023-12-19 02:01:39,040 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 02:01:39,040 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 144 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:39,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 397 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 02:01:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645620 states. [2023-12-19 02:01:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645620 to 618566. [2023-12-19 02:01:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618566 states, 618565 states have (on average 1.1446670923831772) internal successors, (708051), 618565 states have internal predecessors, (708051), 0 states have call successors, (0), 0 states 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 02:01:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618566 states to 618566 states and 708051 transitions. [2023-12-19 02:01:51,036 INFO L78 Accepts]: Start accepts. Automaton has 618566 states and 708051 transitions. Word has length 317 [2023-12-19 02:01:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:51,037 INFO L495 AbstractCegarLoop]: Abstraction has 618566 states and 708051 transitions. [2023-12-19 02:01:51,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 02:01:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 618566 states and 708051 transitions. [2023-12-19 02:01:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-19 02:01:51,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:51,083 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 02:01:51,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 02:01:51,083 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:51,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1465739396, now seen corresponding path program 1 times [2023-12-19 02:01:51,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:51,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509501166] [2023-12-19 02:01:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509501166] [2023-12-19 02:01:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509501166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:51,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:51,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:51,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645172030] [2023-12-19 02:01:51,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:51,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:51,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:51,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:51,232 INFO L87 Difference]: Start difference. First operand 618566 states and 708051 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 02:01:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:56,350 INFO L93 Difference]: Finished difference Result 1115100 states and 1271951 transitions. [2023-12-19 02:01:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:56,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 319 [2023-12-19 02:01:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:57,426 INFO L225 Difference]: With dead ends: 1115100 [2023-12-19 02:01:57,426 INFO L226 Difference]: Without dead ends: 497550 [2023-12-19 02:01:57,645 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 02:01:57,646 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 251 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:57,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 345 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:01:58,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497550 states. [2023-12-19 02:02:04,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497550 to 475998. [2023-12-19 02:02:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475998 states, 475997 states have (on average 1.108448162488419) internal successors, (527618), 475997 states have internal predecessors, (527618), 0 states have call successors, (0), 0 states 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 02:02:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475998 states to 475998 states and 527618 transitions. [2023-12-19 02:02:06,736 INFO L78 Accepts]: Start accepts. Automaton has 475998 states and 527618 transitions. Word has length 319 [2023-12-19 02:02:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:06,736 INFO L495 AbstractCegarLoop]: Abstraction has 475998 states and 527618 transitions. [2023-12-19 02:02:06,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 02:02:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 475998 states and 527618 transitions. [2023-12-19 02:02:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-19 02:02:06,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:06,772 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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] [2023-12-19 02:02:06,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 02:02:06,772 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:06,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1250594949, now seen corresponding path program 1 times [2023-12-19 02:02:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:06,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817159669] [2023-12-19 02:02:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-19 02:02:07,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:07,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817159669] [2023-12-19 02:02:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817159669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:07,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:07,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:02:07,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790367822] [2023-12-19 02:02:07,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:07,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:07,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:07,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:07,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:07,063 INFO L87 Difference]: Start difference. First operand 475998 states and 527618 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)