./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label32.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label32.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da6307e18962eea94383e9cef9de875e55374f6b4142b055a170057bc7246c1d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:00:41,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:00:41,874 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:00:41,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:00:41,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:00:41,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:00:41,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:00:41,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:00:41,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:00:41,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:00:41,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:00:41,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:00:41,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:00:41,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:00:41,897 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:00:41,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:00:41,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:00:41,898 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:00:41,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:00:41,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:00:41,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:00:41,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:00:41,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:00:41,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:00:41,901 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:00:41,901 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:00:41,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:00:41,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:00:41,902 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:00:41,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:00:41,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:00:41,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:00:41,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:00:41,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:00:41,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:00:41,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:00:41,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:00:41,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:00:41,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:00:41,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:00:41,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:00:41,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:00:41,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da6307e18962eea94383e9cef9de875e55374f6b4142b055a170057bc7246c1d [2024-11-16 04:00:42,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:00:42,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:00:42,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:00:42,171 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:00:42,172 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:00:42,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label32.c [2024-11-16 04:00:43,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:00:43,788 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:00:43,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label32.c [2024-11-16 04:00:43,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32638c7a9/4f8a9b568971464db69e5247c933f2cc/FLAG4bfd941c1 [2024-11-16 04:00:43,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32638c7a9/4f8a9b568971464db69e5247c933f2cc [2024-11-16 04:00:43,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:00:43,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:00:43,843 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:00:43,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:00:43,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:00:43,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:00:43" (1/1) ... [2024-11-16 04:00:43,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583acc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:43, skipping insertion in model container [2024-11-16 04:00:43,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:00:43" (1/1) ... [2024-11-16 04:00:43,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:00:44,182 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label32.c[1533,1546] [2024-11-16 04:00:44,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:00:44,834 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:00:44,846 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label32.c[1533,1546] [2024-11-16 04:00:45,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:00:45,287 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:00:45,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45 WrapperNode [2024-11-16 04:00:45,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:00:45,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:00:45,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:00:45,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:00:45,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:45,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:45,723 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-16 04:00:45,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:00:45,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:00:45,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:00:45,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:00:45,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:45,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:45,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:46,153 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:00:46,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:46,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:46,374 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:46,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:46,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:46,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:46,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:00:46,495 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:00:46,495 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:00:46,495 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:00:46,496 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (1/1) ... [2024-11-16 04:00:46,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:00:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:00:46,531 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) [2024-11-16 04:00:46,537 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 [2024-11-16 04:00:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:00:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:00:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:00:46,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:00:46,641 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:00:46,643 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:00:50,798 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-16 04:00:50,798 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-16 04:00:50,798 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-16 04:00:50,919 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-16 04:00:50,920 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:00:50,953 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:00:50,953 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:00:50,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:00:50 BoogieIcfgContainer [2024-11-16 04:00:50,954 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:00:50,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:00:50,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:00:50,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:00:50,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:00:43" (1/3) ... [2024-11-16 04:00:50,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7a5236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:00:50, skipping insertion in model container [2024-11-16 04:00:50,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:00:45" (2/3) ... [2024-11-16 04:00:50,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7a5236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:00:50, skipping insertion in model container [2024-11-16 04:00:50,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:00:50" (3/3) ... [2024-11-16 04:00:50,964 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label32.c [2024-11-16 04:00:50,977 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:00:50,978 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:00:51,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:00:51,061 INFO L333 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, 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;@50022c13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:00:51,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:00:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-16 04:00:51,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:51,075 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:00:51,075 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:51,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash -140281611, now seen corresponding path program 1 times [2024-11-16 04:00:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:51,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456103618] [2024-11-16 04:00:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:51,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456103618] [2024-11-16 04:00:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456103618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:51,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:51,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279363045] [2024-11-16 04:00:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:51,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:51,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:51,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:51,276 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 1.8252957233848954) internal successors, (2006), 1100 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:54,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:54,884 INFO L93 Difference]: Finished difference Result 3041 states and 5649 transitions. [2024-11-16 04:00:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:54,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-16 04:00:54,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:54,911 INFO L225 Difference]: With dead ends: 3041 [2024-11-16 04:00:54,911 INFO L226 Difference]: Without dead ends: 1876 [2024-11-16 04:00:54,920 INFO L431 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 [2024-11-16 04:00:54,924 INFO L432 NwaCegarLoop]: 993 mSDtfsCounter, 897 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:54,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1149 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-16 04:00:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2024-11-16 04:00:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1862. [2024-11-16 04:00:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 1.5432563138097797) internal successors, (2872), 1861 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2872 transitions. [2024-11-16 04:00:55,034 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2872 transitions. Word has length 10 [2024-11-16 04:00:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:55,034 INFO L471 AbstractCegarLoop]: Abstraction has 1862 states and 2872 transitions. [2024-11-16 04:00:55,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2872 transitions. [2024-11-16 04:00:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 04:00:55,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:55,038 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 04:00:55,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:00:55,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:55,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:55,039 INFO L85 PathProgramCache]: Analyzing trace with hash 799840346, now seen corresponding path program 1 times [2024-11-16 04:00:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:55,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827711176] [2024-11-16 04:00:55,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:55,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:55,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827711176] [2024-11-16 04:00:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827711176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:55,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:55,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:55,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119422713] [2024-11-16 04:00:55,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:55,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:55,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:55,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:55,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:55,303 INFO L87 Difference]: Start difference. First operand 1862 states and 2872 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:00:58,196 INFO L93 Difference]: Finished difference Result 5325 states and 8237 transitions. [2024-11-16 04:00:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:00:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-11-16 04:00:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:00:58,206 INFO L225 Difference]: With dead ends: 5325 [2024-11-16 04:00:58,206 INFO L226 Difference]: Without dead ends: 3465 [2024-11-16 04:00:58,208 INFO L431 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 [2024-11-16 04:00:58,209 INFO L432 NwaCegarLoop]: 1041 mSDtfsCounter, 827 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:00:58,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1195 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 04:00:58,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2024-11-16 04:00:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3464. [2024-11-16 04:00:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3464 states, 3463 states have (on average 1.3800173260179036) internal successors, (4779), 3463 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3464 states to 3464 states and 4779 transitions. [2024-11-16 04:00:58,253 INFO L78 Accepts]: Start accepts. Automaton has 3464 states and 4779 transitions. Word has length 83 [2024-11-16 04:00:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:00:58,254 INFO L471 AbstractCegarLoop]: Abstraction has 3464 states and 4779 transitions. [2024-11-16 04:00:58,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:00:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3464 states and 4779 transitions. [2024-11-16 04:00:58,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-16 04:00:58,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:00:58,257 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 04:00:58,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:00:58,257 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:00:58,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:00:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 447515298, now seen corresponding path program 1 times [2024-11-16 04:00:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:00:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717663794] [2024-11-16 04:00:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:00:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:00:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:00:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:00:58,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:00:58,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717663794] [2024-11-16 04:00:58,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717663794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:00:58,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:00:58,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:00:58,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022433361] [2024-11-16 04:00:58,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:00:58,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:00:58,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:00:58,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:00:58,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:00:58,396 INFO L87 Difference]: Start difference. First operand 3464 states and 4779 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:01,136 INFO L93 Difference]: Finished difference Result 10109 states and 13953 transitions. [2024-11-16 04:01:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:01,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2024-11-16 04:01:01,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:01,156 INFO L225 Difference]: With dead ends: 10109 [2024-11-16 04:01:01,156 INFO L226 Difference]: Without dead ends: 6647 [2024-11-16 04:01:01,162 INFO L431 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 [2024-11-16 04:01:01,163 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 933 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:01,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 906 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 04:01:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2024-11-16 04:01:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 6640. [2024-11-16 04:01:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6640 states, 6639 states have (on average 1.2718782949239342) internal successors, (8444), 6639 states have internal predecessors, (8444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6640 states to 6640 states and 8444 transitions. [2024-11-16 04:01:01,316 INFO L78 Accepts]: Start accepts. Automaton has 6640 states and 8444 transitions. Word has length 97 [2024-11-16 04:01:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:01,317 INFO L471 AbstractCegarLoop]: Abstraction has 6640 states and 8444 transitions. [2024-11-16 04:01:01,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6640 states and 8444 transitions. [2024-11-16 04:01:01,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-16 04:01:01,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:01,318 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 04:01:01,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:01:01,319 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:01,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash 739001852, now seen corresponding path program 1 times [2024-11-16 04:01:01,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:01,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467273538] [2024-11-16 04:01:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:01,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:01:01,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:01,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467273538] [2024-11-16 04:01:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467273538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:01,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:01,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:01,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94010816] [2024-11-16 04:01:01,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:01,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:01,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:01,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:01,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:01,456 INFO L87 Difference]: Start difference. First operand 6640 states and 8444 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:04,735 INFO L93 Difference]: Finished difference Result 16459 states and 21441 transitions. [2024-11-16 04:01:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:04,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-16 04:01:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:04,760 INFO L225 Difference]: With dead ends: 16459 [2024-11-16 04:01:04,760 INFO L226 Difference]: Without dead ends: 9821 [2024-11-16 04:01:04,769 INFO L431 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 [2024-11-16 04:01:04,772 INFO L432 NwaCegarLoop]: 742 mSDtfsCounter, 1030 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 3396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:04,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 835 Invalid, 3396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 04:01:04,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9821 states. [2024-11-16 04:01:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9821 to 9810. [2024-11-16 04:01:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9810 states, 9809 states have (on average 1.2735243144051382) internal successors, (12492), 9809 states have internal predecessors, (12492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9810 states to 9810 states and 12492 transitions. [2024-11-16 04:01:04,926 INFO L78 Accepts]: Start accepts. Automaton has 9810 states and 12492 transitions. Word has length 100 [2024-11-16 04:01:04,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:04,928 INFO L471 AbstractCegarLoop]: Abstraction has 9810 states and 12492 transitions. [2024-11-16 04:01:04,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9810 states and 12492 transitions. [2024-11-16 04:01:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-16 04:01:04,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:04,935 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 04:01:04,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:01:04,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:04,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash 625797354, now seen corresponding path program 1 times [2024-11-16 04:01:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:04,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694044891] [2024-11-16 04:01:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:01:05,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:05,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694044891] [2024-11-16 04:01:05,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694044891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:05,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:05,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627471908] [2024-11-16 04:01:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:05,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:01:05,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:01:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:05,461 INFO L87 Difference]: Start difference. First operand 9810 states and 12492 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:09,880 INFO L93 Difference]: Finished difference Result 29931 states and 37920 transitions. [2024-11-16 04:01:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:01:09,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2024-11-16 04:01:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:09,915 INFO L225 Difference]: With dead ends: 29931 [2024-11-16 04:01:09,916 INFO L226 Difference]: Without dead ends: 20123 [2024-11-16 04:01:09,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 04:01:09,928 INFO L432 NwaCegarLoop]: 1038 mSDtfsCounter, 2130 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 5795 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 6341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 5795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:09,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 1320 Invalid, 6341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 5795 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-16 04:01:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20123 states. [2024-11-16 04:01:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20123 to 20092. [2024-11-16 04:01:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20092 states, 20091 states have (on average 1.1844607037977204) internal successors, (23797), 20091 states have internal predecessors, (23797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20092 states to 20092 states and 23797 transitions. [2024-11-16 04:01:10,211 INFO L78 Accepts]: Start accepts. Automaton has 20092 states and 23797 transitions. Word has length 177 [2024-11-16 04:01:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:10,212 INFO L471 AbstractCegarLoop]: Abstraction has 20092 states and 23797 transitions. [2024-11-16 04:01:10,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 20092 states and 23797 transitions. [2024-11-16 04:01:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-16 04:01:10,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:10,215 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:10,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:01:10,216 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:10,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:10,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1430097060, now seen corresponding path program 1 times [2024-11-16 04:01:10,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:10,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226576880] [2024-11-16 04:01:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:01:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226576880] [2024-11-16 04:01:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226576880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:10,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:10,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131769624] [2024-11-16 04:01:10,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:10,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:10,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:10,363 INFO L87 Difference]: Start difference. First operand 20092 states and 23797 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:12,859 INFO L93 Difference]: Finished difference Result 45712 states and 54345 transitions. [2024-11-16 04:01:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:12,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-16 04:01:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:12,900 INFO L225 Difference]: With dead ends: 45712 [2024-11-16 04:01:12,901 INFO L226 Difference]: Without dead ends: 26410 [2024-11-16 04:01:12,920 INFO L431 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 [2024-11-16 04:01:12,921 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 859 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:12,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 954 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 04:01:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26410 states. [2024-11-16 04:01:13,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26410 to 25611. [2024-11-16 04:01:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25611 states, 25610 states have (on average 1.177508785630613) internal successors, (30156), 25610 states have internal predecessors, (30156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25611 states to 25611 states and 30156 transitions. [2024-11-16 04:01:13,194 INFO L78 Accepts]: Start accepts. Automaton has 25611 states and 30156 transitions. Word has length 211 [2024-11-16 04:01:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:13,194 INFO L471 AbstractCegarLoop]: Abstraction has 25611 states and 30156 transitions. [2024-11-16 04:01:13,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:13,195 INFO L276 IsEmpty]: Start isEmpty. Operand 25611 states and 30156 transitions. [2024-11-16 04:01:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-16 04:01:13,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:13,265 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:13,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:01:13,267 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:13,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1585586855, now seen corresponding path program 1 times [2024-11-16 04:01:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863550517] [2024-11-16 04:01:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:01:13,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:13,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863550517] [2024-11-16 04:01:13,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863550517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:13,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:13,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:13,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453761981] [2024-11-16 04:01:13,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:13,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:13,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:13,564 INFO L87 Difference]: Start difference. First operand 25611 states and 30156 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 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) [2024-11-16 04:01:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:15,737 INFO L93 Difference]: Finished difference Result 51253 states and 60370 transitions. [2024-11-16 04:01:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 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 [2024-11-16 04:01:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:15,772 INFO L225 Difference]: With dead ends: 51253 [2024-11-16 04:01:15,773 INFO L226 Difference]: Without dead ends: 26432 [2024-11-16 04:01:15,795 INFO L431 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 [2024-11-16 04:01:15,798 INFO L432 NwaCegarLoop]: 1778 mSDtfsCounter, 722 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:15,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1923 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-16 04:01:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26432 states. [2024-11-16 04:01:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26432 to 26400. [2024-11-16 04:01:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26400 states, 26399 states have (on average 1.161028826849502) internal successors, (30650), 26399 states have internal predecessors, (30650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26400 states to 26400 states and 30650 transitions. [2024-11-16 04:01:16,193 INFO L78 Accepts]: Start accepts. Automaton has 26400 states and 30650 transitions. Word has length 274 [2024-11-16 04:01:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:16,194 INFO L471 AbstractCegarLoop]: Abstraction has 26400 states and 30650 transitions. [2024-11-16 04:01:16,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 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) [2024-11-16 04:01:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 26400 states and 30650 transitions. [2024-11-16 04:01:16,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-16 04:01:16,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:16,198 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:01:16,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:01:16,199 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:16,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash -89056477, now seen corresponding path program 1 times [2024-11-16 04:01:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:16,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236695129] [2024-11-16 04:01:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:16,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 04:01:16,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:16,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236695129] [2024-11-16 04:01:16,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236695129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:16,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:16,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:16,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725494158] [2024-11-16 04:01:16,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:16,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:01:16,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:01:16,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:16,457 INFO L87 Difference]: Start difference. First operand 26400 states and 30650 transitions. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:21,786 INFO L93 Difference]: Finished difference Result 77444 states and 91983 transitions. [2024-11-16 04:01:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:01:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 301 [2024-11-16 04:01:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:21,845 INFO L225 Difference]: With dead ends: 77444 [2024-11-16 04:01:21,845 INFO L226 Difference]: Without dead ends: 51834 [2024-11-16 04:01:21,860 INFO L431 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 [2024-11-16 04:01:21,862 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 1719 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 6369 mSolverCounterSat, 1046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 7415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1046 IncrementalHoareTripleChecker+Valid, 6369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:21,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 1071 Invalid, 7415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1046 Valid, 6369 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-16 04:01:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51834 states. [2024-11-16 04:01:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51834 to 51707. [2024-11-16 04:01:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51707 states, 51706 states have (on average 1.1671179360228987) internal successors, (60347), 51706 states have internal predecessors, (60347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51707 states to 51707 states and 60347 transitions. [2024-11-16 04:01:22,305 INFO L78 Accepts]: Start accepts. Automaton has 51707 states and 60347 transitions. Word has length 301 [2024-11-16 04:01:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:22,306 INFO L471 AbstractCegarLoop]: Abstraction has 51707 states and 60347 transitions. [2024-11-16 04:01:22,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 51707 states and 60347 transitions. [2024-11-16 04:01:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-16 04:01:22,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:22,310 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:22,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:01:22,310 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:22,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:22,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1513360698, now seen corresponding path program 1 times [2024-11-16 04:01:22,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:22,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829234346] [2024-11-16 04:01:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:22,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-16 04:01:22,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829234346] [2024-11-16 04:01:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829234346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:22,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:22,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:22,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827283860] [2024-11-16 04:01:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:22,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:22,589 INFO L87 Difference]: Start difference. First operand 51707 states and 60347 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:26,325 INFO L93 Difference]: Finished difference Result 115240 states and 136359 transitions. [2024-11-16 04:01:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:26,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 303 [2024-11-16 04:01:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:26,395 INFO L225 Difference]: With dead ends: 115240 [2024-11-16 04:01:26,395 INFO L226 Difference]: Without dead ends: 64323 [2024-11-16 04:01:26,414 INFO L431 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 [2024-11-16 04:01:26,414 INFO L432 NwaCegarLoop]: 1837 mSDtfsCounter, 848 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:26,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1990 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-16 04:01:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64323 states. [2024-11-16 04:01:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64323 to 63526. [2024-11-16 04:01:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63526 states, 63525 states have (on average 1.1512475403384494) internal successors, (73133), 63525 states have internal predecessors, (73133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63526 states to 63526 states and 73133 transitions. [2024-11-16 04:01:27,146 INFO L78 Accepts]: Start accepts. Automaton has 63526 states and 73133 transitions. Word has length 303 [2024-11-16 04:01:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:27,146 INFO L471 AbstractCegarLoop]: Abstraction has 63526 states and 73133 transitions. [2024-11-16 04:01:27,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 63526 states and 73133 transitions. [2024-11-16 04:01:27,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-16 04:01:27,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:27,151 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:27,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:01:27,151 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:27,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1420281800, now seen corresponding path program 1 times [2024-11-16 04:01:27,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:27,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691053327] [2024-11-16 04:01:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-16 04:01:27,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:27,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691053327] [2024-11-16 04:01:27,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691053327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:27,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:27,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:27,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178896422] [2024-11-16 04:01:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:27,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:27,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:27,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:27,405 INFO L87 Difference]: Start difference. First operand 63526 states and 73133 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:30,259 INFO L93 Difference]: Finished difference Result 136494 states and 159416 transitions. [2024-11-16 04:01:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:30,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 329 [2024-11-16 04:01:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:30,337 INFO L225 Difference]: With dead ends: 136494 [2024-11-16 04:01:30,337 INFO L226 Difference]: Without dead ends: 73758 [2024-11-16 04:01:30,347 INFO L431 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 [2024-11-16 04:01:30,348 INFO L432 NwaCegarLoop]: 1473 mSDtfsCounter, 1157 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:30,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 1565 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:01:30,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73758 states. [2024-11-16 04:01:30,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73758 to 73757. [2024-11-16 04:01:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73757 states, 73756 states have (on average 1.1364905905960192) internal successors, (83823), 73756 states have internal predecessors, (83823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73757 states to 73757 states and 83823 transitions. [2024-11-16 04:01:30,980 INFO L78 Accepts]: Start accepts. Automaton has 73757 states and 83823 transitions. Word has length 329 [2024-11-16 04:01:30,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:30,981 INFO L471 AbstractCegarLoop]: Abstraction has 73757 states and 83823 transitions. [2024-11-16 04:01:30,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 73757 states and 83823 transitions. [2024-11-16 04:01:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-16 04:01:30,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:30,988 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:01:30,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:01:30,988 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:30,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash -846817668, now seen corresponding path program 1 times [2024-11-16 04:01:30,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:30,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359575824] [2024-11-16 04:01:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:30,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-16 04:01:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359575824] [2024-11-16 04:01:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359575824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:31,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343685288] [2024-11-16 04:01:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:31,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:31,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:31,466 INFO L87 Difference]: Start difference. First operand 73757 states and 83823 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:34,472 INFO L93 Difference]: Finished difference Result 146719 states and 166850 transitions. [2024-11-16 04:01:34,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:34,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 408 [2024-11-16 04:01:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:34,554 INFO L225 Difference]: With dead ends: 146719 [2024-11-16 04:01:34,555 INFO L226 Difference]: Without dead ends: 73752 [2024-11-16 04:01:34,583 INFO L431 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 [2024-11-16 04:01:34,584 INFO L432 NwaCegarLoop]: 1711 mSDtfsCounter, 797 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:34,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1855 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2499 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 04:01:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73752 states. [2024-11-16 04:01:35,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73752 to 72943. [2024-11-16 04:01:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72943 states, 72942 states have (on average 1.0963642345973512) internal successors, (79971), 72942 states have internal predecessors, (79971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72943 states to 72943 states and 79971 transitions. [2024-11-16 04:01:35,283 INFO L78 Accepts]: Start accepts. Automaton has 72943 states and 79971 transitions. Word has length 408 [2024-11-16 04:01:35,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:35,283 INFO L471 AbstractCegarLoop]: Abstraction has 72943 states and 79971 transitions. [2024-11-16 04:01:35,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:35,284 INFO L276 IsEmpty]: Start isEmpty. Operand 72943 states and 79971 transitions. [2024-11-16 04:01:35,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2024-11-16 04:01:35,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:35,290 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:35,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:01:35,290 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:35,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:35,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1351763921, now seen corresponding path program 1 times [2024-11-16 04:01:35,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:35,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083700893] [2024-11-16 04:01:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:35,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 04:01:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083700893] [2024-11-16 04:01:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083700893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:35,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:35,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275668165] [2024-11-16 04:01:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:35,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:35,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:35,715 INFO L87 Difference]: Start difference. First operand 72943 states and 79971 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:38,974 INFO L93 Difference]: Finished difference Result 183687 states and 201394 transitions. [2024-11-16 04:01:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:38,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 435 [2024-11-16 04:01:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:39,108 INFO L225 Difference]: With dead ends: 183687 [2024-11-16 04:01:39,108 INFO L226 Difference]: Without dead ends: 107589 [2024-11-16 04:01:39,131 INFO L431 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 [2024-11-16 04:01:39,132 INFO L432 NwaCegarLoop]: 1737 mSDtfsCounter, 865 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 3210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:39,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1869 Invalid, 3210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 04:01:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107589 states. [2024-11-16 04:01:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107589 to 103641. [2024-11-16 04:01:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103641 states, 103640 states have (on average 1.0759841759938247) internal successors, (111515), 103640 states have internal predecessors, (111515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103641 states to 103641 states and 111515 transitions. [2024-11-16 04:01:40,354 INFO L78 Accepts]: Start accepts. Automaton has 103641 states and 111515 transitions. Word has length 435 [2024-11-16 04:01:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:40,354 INFO L471 AbstractCegarLoop]: Abstraction has 103641 states and 111515 transitions. [2024-11-16 04:01:40,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 103641 states and 111515 transitions. [2024-11-16 04:01:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-16 04:01:40,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:40,365 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:40,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:01:40,365 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:40,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:40,365 INFO L85 PathProgramCache]: Analyzing trace with hash 259514434, now seen corresponding path program 1 times [2024-11-16 04:01:40,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:40,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600691615] [2024-11-16 04:01:40,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:40,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-16 04:01:41,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:41,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600691615] [2024-11-16 04:01:41,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600691615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:41,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:41,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:01:41,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751406140] [2024-11-16 04:01:41,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:41,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:01:41,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:41,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:01:41,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:41,103 INFO L87 Difference]: Start difference. First operand 103641 states and 111515 transitions. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:46,991 INFO L93 Difference]: Finished difference Result 278395 states and 299544 transitions. [2024-11-16 04:01:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:01:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 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 459 [2024-11-16 04:01:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:47,362 INFO L225 Difference]: With dead ends: 278395 [2024-11-16 04:01:47,362 INFO L226 Difference]: Without dead ends: 175544 [2024-11-16 04:01:47,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:47,391 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 1909 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 6062 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 7162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 6062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:47,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 634 Invalid, 7162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 6062 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-16 04:01:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175544 states. [2024-11-16 04:01:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175544 to 165141. [2024-11-16 04:01:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165141 states, 165140 states have (on average 1.073337774009931) internal successors, (177251), 165140 states have internal predecessors, (177251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165141 states to 165141 states and 177251 transitions. [2024-11-16 04:01:49,348 INFO L78 Accepts]: Start accepts. Automaton has 165141 states and 177251 transitions. Word has length 459 [2024-11-16 04:01:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:49,348 INFO L471 AbstractCegarLoop]: Abstraction has 165141 states and 177251 transitions. [2024-11-16 04:01:49,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 165141 states and 177251 transitions. [2024-11-16 04:01:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-16 04:01:49,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:49,358 INFO L215 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:49,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:01:49,358 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:49,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash 940725344, now seen corresponding path program 1 times [2024-11-16 04:01:49,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:49,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896066057] [2024-11-16 04:01:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 04:01:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:50,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896066057] [2024-11-16 04:01:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896066057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:50,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:01:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638358468] [2024-11-16 04:01:50,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:50,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:01:50,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:01:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:01:50,123 INFO L87 Difference]: Start difference. First operand 165141 states and 177251 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:54,284 INFO L93 Difference]: Finished difference Result 338162 states and 362669 transitions. [2024-11-16 04:01:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:01:54,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 480 [2024-11-16 04:01:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:54,500 INFO L225 Difference]: With dead ends: 338162 [2024-11-16 04:01:54,500 INFO L226 Difference]: Without dead ends: 171444 [2024-11-16 04:01:54,575 INFO L431 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 [2024-11-16 04:01:54,576 INFO L432 NwaCegarLoop]: 767 mSDtfsCounter, 1505 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4167 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 4713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 4167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:54,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 954 Invalid, 4713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 4167 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 04:01:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171444 states. [2024-11-16 04:01:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171444 to 169865. [2024-11-16 04:01:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169865 states, 169864 states have (on average 1.0656878443931617) internal successors, (181022), 169864 states have internal predecessors, (181022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169865 states to 169865 states and 181022 transitions. [2024-11-16 04:01:56,592 INFO L78 Accepts]: Start accepts. Automaton has 169865 states and 181022 transitions. Word has length 480 [2024-11-16 04:01:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:56,593 INFO L471 AbstractCegarLoop]: Abstraction has 169865 states and 181022 transitions. [2024-11-16 04:01:56,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:01:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 169865 states and 181022 transitions. [2024-11-16 04:01:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-16 04:01:56,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:56,602 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:56,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 04:01:56,602 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:56,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1255485325, now seen corresponding path program 1 times [2024-11-16 04:01:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:56,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588824965] [2024-11-16 04:01:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-16 04:01:57,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:57,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588824965] [2024-11-16 04:01:57,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588824965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:57,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:57,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:01:57,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848813879] [2024-11-16 04:01:57,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:57,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:57,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:57,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:57,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:57,249 INFO L87 Difference]: Start difference. First operand 169865 states and 181022 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 2 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:01,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:01,257 INFO L93 Difference]: Finished difference Result 419350 states and 446770 transitions. [2024-11-16 04:02:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:01,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 2 states have internal predecessors, (398), 0 states have call successors, (0), 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 499 [2024-11-16 04:02:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:01,891 INFO L225 Difference]: With dead ends: 419350 [2024-11-16 04:02:01,891 INFO L226 Difference]: Without dead ends: 250275 [2024-11-16 04:02:01,981 INFO L431 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 [2024-11-16 04:02:01,982 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 581 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:01,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 656 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 2740 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 04:02:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250275 states. [2024-11-16 04:02:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250275 to 237653. [2024-11-16 04:02:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237653 states, 237652 states have (on average 1.062654637873866) internal successors, (252542), 237652 states have internal predecessors, (252542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237653 states to 237653 states and 252542 transitions. [2024-11-16 04:02:05,127 INFO L78 Accepts]: Start accepts. Automaton has 237653 states and 252542 transitions. Word has length 499 [2024-11-16 04:02:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:05,128 INFO L471 AbstractCegarLoop]: Abstraction has 237653 states and 252542 transitions. [2024-11-16 04:02:05,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 2 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 237653 states and 252542 transitions. [2024-11-16 04:02:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-16 04:02:05,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:05,143 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:05,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:02:05,144 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:05,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1481076813, now seen corresponding path program 1 times [2024-11-16 04:02:05,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:05,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532136257] [2024-11-16 04:02:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-11-16 04:02:05,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:05,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532136257] [2024-11-16 04:02:05,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532136257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:05,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:05,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:05,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998372629] [2024-11-16 04:02:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:05,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:05,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:05,471 INFO L87 Difference]: Start difference. First operand 237653 states and 252542 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)