./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label40.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_label40.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 5822f6dcecb89719be961a38493299a8716c4a47f733fff54adb51e7e48a109b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:01:35,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:01:35,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:01:35,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:01:35,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:01:35,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:01:35,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:01:35,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:01:35,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:01:35,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:01:35,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:01:35,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:01:35,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:01:35,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:01:35,587 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:01:35,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:01:35,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:01:35,588 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:01:35,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:01:35,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:01:35,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:01:35,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:01:35,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:01:35,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:01:35,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:01:35,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:01:35,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:01:35,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:01:35,595 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:01:35,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:01:35,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:01:35,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:01:35,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:01:35,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:01:35,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:01:35,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:01:35,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:01:35,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:01:35,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:01:35,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:01:35,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:01:35,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:01:35,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5822f6dcecb89719be961a38493299a8716c4a47f733fff54adb51e7e48a109b [2024-11-16 04:01:35,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:01:35,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:01:35,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:01:35,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:01:35,878 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:01:35,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label40.c [2024-11-16 04:01:37,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:01:37,797 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:01:37,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label40.c [2024-11-16 04:01:37,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7635814c1/163ac2a8a27d45ae9fa78ad62bdf6744/FLAGb2808ed99 [2024-11-16 04:01:37,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7635814c1/163ac2a8a27d45ae9fa78ad62bdf6744 [2024-11-16 04:01:37,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:01:37,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:01:37,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:01:37,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:01:37,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:01:37,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:01:37" (1/1) ... [2024-11-16 04:01:37,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796fbb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:37, skipping insertion in model container [2024-11-16 04:01:37,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:01:37" (1/1) ... [2024-11-16 04:01:37,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:01:38,300 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_label40.c[4201,4214] [2024-11-16 04:01:39,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:01:39,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:01:39,315 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_label40.c[4201,4214] [2024-11-16 04:01:39,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:01:39,794 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:01:39,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39 WrapperNode [2024-11-16 04:01:39,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:01:39,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:01:39,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:01:39,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:01:39,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:39,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:40,400 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-16 04:01:40,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:01:40,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:01:40,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:01:40,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:01:40,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:40,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:40,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:40,746 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 04:01:40,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:40,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:40,948 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:40,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:41,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:41,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:41,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:01:41,147 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:01:41,148 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:01:41,148 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:01:41,150 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (1/1) ... [2024-11-16 04:01:41,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:01:41,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:01:41,182 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 04:01:41,185 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 04:01:41,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:01:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:01:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:01:41,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:01:41,309 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:01:41,311 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:01:46,367 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-16 04:01:46,367 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-16 04:01:46,367 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-16 04:01:46,603 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-16 04:01:46,604 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:01:46,640 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:01:46,640 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:01:46,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:01:46 BoogieIcfgContainer [2024-11-16 04:01:46,641 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:01:46,644 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:01:46,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:01:46,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:01:46,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:01:37" (1/3) ... [2024-11-16 04:01:46,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a13913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:01:46, skipping insertion in model container [2024-11-16 04:01:46,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:01:39" (2/3) ... [2024-11-16 04:01:46,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a13913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:01:46, skipping insertion in model container [2024-11-16 04:01:46,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:01:46" (3/3) ... [2024-11-16 04:01:46,651 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label40.c [2024-11-16 04:01:46,669 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:01:46,669 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:01:46,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:01:46,770 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;@de5803b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:01:46,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:01:46,778 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 04:01:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 04:01:46,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:46,785 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:01:46,786 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:46,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash -218550825, now seen corresponding path program 1 times [2024-11-16 04:01:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:46,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448011236] [2024-11-16 04:01:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:47,125 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 04:01:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448011236] [2024-11-16 04:01:47,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448011236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:47,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:47,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:01:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516106979] [2024-11-16 04:01:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:47,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:47,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:47,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:47,162 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 04:01:51,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:51,231 INFO L93 Difference]: Finished difference Result 3153 states and 5812 transitions. [2024-11-16 04:01:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:51,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-11-16 04:01:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:51,256 INFO L225 Difference]: With dead ends: 3153 [2024-11-16 04:01:51,256 INFO L226 Difference]: Without dead ends: 1967 [2024-11-16 04:01:51,261 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 04:01:51,264 INFO L432 NwaCegarLoop]: 761 mSDtfsCounter, 1151 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:51,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 991 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-16 04:01:51,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2024-11-16 04:01:51,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1954. [2024-11-16 04:01:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1953 states have (on average 1.65284178187404) internal successors, (3228), 1953 states have internal predecessors, (3228), 0 states have call successors, (0), 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 04:01:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 3228 transitions. [2024-11-16 04:01:51,390 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 3228 transitions. Word has length 30 [2024-11-16 04:01:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:51,391 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 3228 transitions. [2024-11-16 04:01:51,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 04:01:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 3228 transitions. [2024-11-16 04:01:51,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-16 04:01:51,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:51,394 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:51,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:01:51,395 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:51,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash -824453457, now seen corresponding path program 1 times [2024-11-16 04:01:51,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557931120] [2024-11-16 04:01:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:01:51,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:51,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557931120] [2024-11-16 04:01:51,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557931120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:51,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:51,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:01:51,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469546919] [2024-11-16 04:01:51,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:51,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:51,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:51,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:51,614 INFO L87 Difference]: Start difference. First operand 1954 states and 3228 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 04:01:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:55,539 INFO L93 Difference]: Finished difference Result 5551 states and 9231 transitions. [2024-11-16 04:01:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:55,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2024-11-16 04:01:55,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:55,553 INFO L225 Difference]: With dead ends: 5551 [2024-11-16 04:01:55,553 INFO L226 Difference]: Without dead ends: 3599 [2024-11-16 04:01:55,556 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 04:01:55,557 INFO L432 NwaCegarLoop]: 876 mSDtfsCounter, 925 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:55,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 1015 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-16 04:01:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2024-11-16 04:01:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3586. [2024-11-16 04:01:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 1.504323570432357) internal successors, (5393), 3585 states have internal predecessors, (5393), 0 states have call successors, (0), 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 04:01:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5393 transitions. [2024-11-16 04:01:55,637 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5393 transitions. Word has length 102 [2024-11-16 04:01:55,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:55,638 INFO L471 AbstractCegarLoop]: Abstraction has 3586 states and 5393 transitions. [2024-11-16 04:01:55,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 04:01:55,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5393 transitions. [2024-11-16 04:01:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-16 04:01:55,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:55,647 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:55,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:01:55,648 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:55,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash -200253080, now seen corresponding path program 1 times [2024-11-16 04:01:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793357684] [2024-11-16 04:01:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:55,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:01:55,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:55,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793357684] [2024-11-16 04:01:55,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793357684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:55,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:55,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:01:55,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304430349] [2024-11-16 04:01:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:55,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:55,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:55,933 INFO L87 Difference]: Start difference. First operand 3586 states and 5393 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 04:01:59,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:01:59,195 INFO L93 Difference]: Finished difference Result 10366 states and 15639 transitions. [2024-11-16 04:01:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:01:59,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-11-16 04:01:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:01:59,219 INFO L225 Difference]: With dead ends: 10366 [2024-11-16 04:01:59,220 INFO L226 Difference]: Without dead ends: 6782 [2024-11-16 04:01:59,229 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 04:01:59,230 INFO L432 NwaCegarLoop]: 1022 mSDtfsCounter, 787 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:01:59,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1173 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 04:01:59,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6782 states. [2024-11-16 04:01:59,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6782 to 6758. [2024-11-16 04:01:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6758 states, 6757 states have (on average 1.325144294805387) internal successors, (8954), 6757 states have internal predecessors, (8954), 0 states have call successors, (0), 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 04:01:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6758 states to 6758 states and 8954 transitions. [2024-11-16 04:01:59,347 INFO L78 Accepts]: Start accepts. Automaton has 6758 states and 8954 transitions. Word has length 116 [2024-11-16 04:01:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:01:59,351 INFO L471 AbstractCegarLoop]: Abstraction has 6758 states and 8954 transitions. [2024-11-16 04:01:59,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 04:01:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6758 states and 8954 transitions. [2024-11-16 04:01:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-16 04:01:59,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:01:59,353 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:01:59,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:01:59,353 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:01:59,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:01:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1668277139, now seen corresponding path program 1 times [2024-11-16 04:01:59,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:01:59,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007613112] [2024-11-16 04:01:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:01:59,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:01:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:01:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:01:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:01:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007613112] [2024-11-16 04:01:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007613112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:01:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:01:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:01:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163760912] [2024-11-16 04:01:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:01:59,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:01:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:01:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:01:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:01:59,539 INFO L87 Difference]: Start difference. First operand 6758 states and 8954 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 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 04:02:02,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:02,882 INFO L93 Difference]: Finished difference Result 19900 states and 26353 transitions. [2024-11-16 04:02:02,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:02,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 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 145 [2024-11-16 04:02:02,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:02,914 INFO L225 Difference]: With dead ends: 19900 [2024-11-16 04:02:02,914 INFO L226 Difference]: Without dead ends: 13144 [2024-11-16 04:02:02,926 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 04:02:02,927 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 902 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:02,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 617 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 04:02:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2024-11-16 04:02:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 13131. [2024-11-16 04:02:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13131 states, 13130 states have (on average 1.2756283320639756) internal successors, (16749), 13130 states have internal predecessors, (16749), 0 states have call successors, (0), 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 04:02:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13131 states to 13131 states and 16749 transitions. [2024-11-16 04:02:03,228 INFO L78 Accepts]: Start accepts. Automaton has 13131 states and 16749 transitions. Word has length 145 [2024-11-16 04:02:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:03,229 INFO L471 AbstractCegarLoop]: Abstraction has 13131 states and 16749 transitions. [2024-11-16 04:02:03,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 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 04:02:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 13131 states and 16749 transitions. [2024-11-16 04:02:03,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-16 04:02:03,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:03,231 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:03,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:02:03,232 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:03,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1119036731, now seen corresponding path program 1 times [2024-11-16 04:02:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:03,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495144185] [2024-11-16 04:02:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:03,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:03,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495144185] [2024-11-16 04:02:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495144185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:03,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:03,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:03,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228047292] [2024-11-16 04:02:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:03,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:02:03,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:02:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:02:03,484 INFO L87 Difference]: Start difference. First operand 13131 states and 16749 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 04:02:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:09,765 INFO L93 Difference]: Finished difference Result 45463 states and 59117 transitions. [2024-11-16 04:02:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:02:09,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2024-11-16 04:02:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:09,832 INFO L225 Difference]: With dead ends: 45463 [2024-11-16 04:02:09,832 INFO L226 Difference]: Without dead ends: 33122 [2024-11-16 04:02:09,851 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 04:02:09,853 INFO L432 NwaCegarLoop]: 944 mSDtfsCounter, 1655 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 7427 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 8046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 7427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:09,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 1238 Invalid, 8046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 7427 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-16 04:02:09,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33122 states. [2024-11-16 04:02:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33122 to 32899. [2024-11-16 04:02:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32899 states, 32898 states have (on average 1.2322025655055018) internal successors, (40537), 32898 states have internal predecessors, (40537), 0 states have call successors, (0), 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 04:02:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32899 states to 32899 states and 40537 transitions. [2024-11-16 04:02:10,277 INFO L78 Accepts]: Start accepts. Automaton has 32899 states and 40537 transitions. Word has length 156 [2024-11-16 04:02:10,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:10,278 INFO L471 AbstractCegarLoop]: Abstraction has 32899 states and 40537 transitions. [2024-11-16 04:02:10,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 04:02:10,279 INFO L276 IsEmpty]: Start isEmpty. Operand 32899 states and 40537 transitions. [2024-11-16 04:02:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-16 04:02:10,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:10,282 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:10,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:02:10,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:10,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1338705337, now seen corresponding path program 1 times [2024-11-16 04:02:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:10,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247887449] [2024-11-16 04:02:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 04:02:10,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:10,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247887449] [2024-11-16 04:02:10,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247887449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:10,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:10,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:02:10,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200002222] [2024-11-16 04:02:10,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:10,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:10,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:10,880 INFO L87 Difference]: Start difference. First operand 32899 states and 40537 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:13,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:13,615 INFO L93 Difference]: Finished difference Result 65008 states and 80264 transitions. [2024-11-16 04:02:13,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:13,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-11-16 04:02:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:13,673 INFO L225 Difference]: With dead ends: 65008 [2024-11-16 04:02:13,673 INFO L226 Difference]: Without dead ends: 32899 [2024-11-16 04:02:13,704 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 04:02:13,705 INFO L432 NwaCegarLoop]: 1086 mSDtfsCounter, 700 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:13,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1217 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 04:02:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32899 states. [2024-11-16 04:02:13,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32899 to 32899. [2024-11-16 04:02:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32899 states, 32898 states have (on average 1.2318985956593107) internal successors, (40527), 32898 states have internal predecessors, (40527), 0 states have call successors, (0), 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 04:02:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32899 states to 32899 states and 40527 transitions. [2024-11-16 04:02:14,060 INFO L78 Accepts]: Start accepts. Automaton has 32899 states and 40527 transitions. Word has length 222 [2024-11-16 04:02:14,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:14,061 INFO L471 AbstractCegarLoop]: Abstraction has 32899 states and 40527 transitions. [2024-11-16 04:02:14,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:14,061 INFO L276 IsEmpty]: Start isEmpty. Operand 32899 states and 40527 transitions. [2024-11-16 04:02:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-16 04:02:14,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:14,066 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:14,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:02:14,067 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:14,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:14,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1533927517, now seen corresponding path program 1 times [2024-11-16 04:02:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:14,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770911486] [2024-11-16 04:02:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:14,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:14,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:14,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770911486] [2024-11-16 04:02:14,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770911486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:14,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:14,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476677848] [2024-11-16 04:02:14,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:14,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:02:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:02:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:02:14,485 INFO L87 Difference]: Start difference. First operand 32899 states and 40527 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:20,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:20,522 INFO L93 Difference]: Finished difference Result 88993 states and 111286 transitions. [2024-11-16 04:02:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:02:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2024-11-16 04:02:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:20,614 INFO L225 Difference]: With dead ends: 88993 [2024-11-16 04:02:20,614 INFO L226 Difference]: Without dead ends: 56884 [2024-11-16 04:02:20,649 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 04:02:20,650 INFO L432 NwaCegarLoop]: 769 mSDtfsCounter, 1740 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 6220 mSolverCounterSat, 1131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 7351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1131 IncrementalHoareTripleChecker+Valid, 6220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:20,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 984 Invalid, 7351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1131 Valid, 6220 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-16 04:02:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56884 states. [2024-11-16 04:02:21,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56884 to 56695. [2024-11-16 04:02:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56695 states, 56694 states have (on average 1.2242565350830776) internal successors, (69408), 56694 states have internal predecessors, (69408), 0 states have call successors, (0), 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 04:02:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56695 states to 56695 states and 69408 transitions. [2024-11-16 04:02:21,404 INFO L78 Accepts]: Start accepts. Automaton has 56695 states and 69408 transitions. Word has length 229 [2024-11-16 04:02:21,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:21,405 INFO L471 AbstractCegarLoop]: Abstraction has 56695 states and 69408 transitions. [2024-11-16 04:02:21,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 56695 states and 69408 transitions. [2024-11-16 04:02:21,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-16 04:02:21,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:21,409 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:02:21,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 04:02:21,409 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:21,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash 645988872, now seen corresponding path program 1 times [2024-11-16 04:02:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:21,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86555356] [2024-11-16 04:02:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:21,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86555356] [2024-11-16 04:02:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86555356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:21,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:21,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:21,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030366479] [2024-11-16 04:02:21,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:21,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:21,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:21,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:21,697 INFO L87 Difference]: Start difference. First operand 56695 states and 69408 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 04:02:25,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:25,309 INFO L93 Difference]: Finished difference Result 137832 states and 172462 transitions. [2024-11-16 04:02:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:25,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-11-16 04:02:25,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:25,419 INFO L225 Difference]: With dead ends: 137832 [2024-11-16 04:02:25,419 INFO L226 Difference]: Without dead ends: 81927 [2024-11-16 04:02:25,456 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 04:02:25,458 INFO L432 NwaCegarLoop]: 940 mSDtfsCounter, 826 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:25,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1062 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-16 04:02:25,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81927 states. [2024-11-16 04:02:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81927 to 81912. [2024-11-16 04:02:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81912 states, 81911 states have (on average 1.2058942022438988) internal successors, (98776), 81911 states have internal predecessors, (98776), 0 states have call successors, (0), 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 04:02:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81912 states to 81912 states and 98776 transitions. [2024-11-16 04:02:26,584 INFO L78 Accepts]: Start accepts. Automaton has 81912 states and 98776 transitions. Word has length 239 [2024-11-16 04:02:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:26,585 INFO L471 AbstractCegarLoop]: Abstraction has 81912 states and 98776 transitions. [2024-11-16 04:02:26,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 04:02:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 81912 states and 98776 transitions. [2024-11-16 04:02:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-16 04:02:26,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:26,589 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:26,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:02:26,589 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:26,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:26,590 INFO L85 PathProgramCache]: Analyzing trace with hash 996081538, now seen corresponding path program 1 times [2024-11-16 04:02:26,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:26,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137771670] [2024-11-16 04:02:26,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:26,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:02:26,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:26,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137771670] [2024-11-16 04:02:26,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137771670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:26,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:26,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:26,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818438666] [2024-11-16 04:02:26,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:26,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:26,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:26,779 INFO L87 Difference]: Start difference. First operand 81912 states and 98776 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 04:02:28,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-16 04:02:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:31,324 INFO L93 Difference]: Finished difference Result 161224 states and 194748 transitions. [2024-11-16 04:02:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:31,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2024-11-16 04:02:31,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:31,423 INFO L225 Difference]: With dead ends: 161224 [2024-11-16 04:02:31,423 INFO L226 Difference]: Without dead ends: 80102 [2024-11-16 04:02:31,468 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 04:02:31,469 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 1039 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:31,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1673 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-16 04:02:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80102 states. [2024-11-16 04:02:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80102 to 80093. [2024-11-16 04:02:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80093 states, 80092 states have (on average 1.1413499475603057) internal successors, (91413), 80092 states have internal predecessors, (91413), 0 states have call successors, (0), 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 04:02:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80093 states to 80093 states and 91413 transitions. [2024-11-16 04:02:32,675 INFO L78 Accepts]: Start accepts. Automaton has 80093 states and 91413 transitions. Word has length 246 [2024-11-16 04:02:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:32,675 INFO L471 AbstractCegarLoop]: Abstraction has 80093 states and 91413 transitions. [2024-11-16 04:02:32,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 04:02:32,675 INFO L276 IsEmpty]: Start isEmpty. Operand 80093 states and 91413 transitions. [2024-11-16 04:02:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-16 04:02:32,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:32,679 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 04:02:32,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:02:32,679 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:32,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1596071320, now seen corresponding path program 1 times [2024-11-16 04:02:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:32,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152052894] [2024-11-16 04:02:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:32,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-16 04:02:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152052894] [2024-11-16 04:02:33,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152052894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:33,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:33,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:02:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598807170] [2024-11-16 04:02:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:33,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:33,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:33,189 INFO L87 Difference]: Start difference. First operand 80093 states and 91413 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 04:02:36,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:36,934 INFO L93 Difference]: Finished difference Result 212175 states and 243806 transitions. [2024-11-16 04:02:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:36,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2024-11-16 04:02:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:37,113 INFO L225 Difference]: With dead ends: 212175 [2024-11-16 04:02:37,114 INFO L226 Difference]: Without dead ends: 132872 [2024-11-16 04:02:37,141 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 04:02:37,141 INFO L432 NwaCegarLoop]: 915 mSDtfsCounter, 815 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:37,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1052 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 04:02:37,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132872 states. [2024-11-16 04:02:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132872 to 124979. [2024-11-16 04:02:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124979 states, 124978 states have (on average 1.1130999055833826) internal successors, (139113), 124978 states have internal predecessors, (139113), 0 states have call successors, (0), 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 04:02:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124979 states to 124979 states and 139113 transitions. [2024-11-16 04:02:38,704 INFO L78 Accepts]: Start accepts. Automaton has 124979 states and 139113 transitions. Word has length 262 [2024-11-16 04:02:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:38,704 INFO L471 AbstractCegarLoop]: Abstraction has 124979 states and 139113 transitions. [2024-11-16 04:02:38,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 04:02:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 124979 states and 139113 transitions. [2024-11-16 04:02:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-16 04:02:38,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:38,710 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:02:38,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:02:38,711 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:38,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1835207658, now seen corresponding path program 1 times [2024-11-16 04:02:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120484530] [2024-11-16 04:02:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-16 04:02:39,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:39,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120484530] [2024-11-16 04:02:39,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120484530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:39,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:39,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:39,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826625958] [2024-11-16 04:02:39,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:39,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:39,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:39,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:39,368 INFO L87 Difference]: Start difference. First operand 124979 states and 139113 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:42,966 INFO L93 Difference]: Finished difference Result 251536 states and 279820 transitions. [2024-11-16 04:02:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:42,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 319 [2024-11-16 04:02:42,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:43,122 INFO L225 Difference]: With dead ends: 251536 [2024-11-16 04:02:43,122 INFO L226 Difference]: Without dead ends: 127347 [2024-11-16 04:02:43,158 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 04:02:43,159 INFO L432 NwaCegarLoop]: 1396 mSDtfsCounter, 939 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:43,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1484 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-16 04:02:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127347 states. [2024-11-16 04:02:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127347 to 124972. [2024-11-16 04:02:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124972 states, 124971 states have (on average 1.0929255587296254) internal successors, (136584), 124971 states have internal predecessors, (136584), 0 states have call successors, (0), 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 04:02:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124972 states to 124972 states and 136584 transitions. [2024-11-16 04:02:44,912 INFO L78 Accepts]: Start accepts. Automaton has 124972 states and 136584 transitions. Word has length 319 [2024-11-16 04:02:44,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:44,913 INFO L471 AbstractCegarLoop]: Abstraction has 124972 states and 136584 transitions. [2024-11-16 04:02:44,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:02:44,913 INFO L276 IsEmpty]: Start isEmpty. Operand 124972 states and 136584 transitions. [2024-11-16 04:02:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-16 04:02:44,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:44,917 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 04:02:44,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 04:02:44,917 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:44,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1267237263, now seen corresponding path program 1 times [2024-11-16 04:02:44,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:44,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946291583] [2024-11-16 04:02:44,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:44,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-16 04:02:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946291583] [2024-11-16 04:02:45,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946291583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122441373] [2024-11-16 04:02:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:45,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:45,552 INFO L87 Difference]: Start difference. First operand 124972 states and 136584 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 04:02:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:02:49,133 INFO L93 Difference]: Finished difference Result 283046 states and 310666 transitions. [2024-11-16 04:02:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:02:49,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 04:02:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:02:49,297 INFO L225 Difference]: With dead ends: 283046 [2024-11-16 04:02:49,297 INFO L226 Difference]: Without dead ends: 158864 [2024-11-16 04:02:49,353 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 04:02:49,353 INFO L432 NwaCegarLoop]: 764 mSDtfsCounter, 895 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:02:49,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 846 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 04:02:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158864 states. [2024-11-16 04:02:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158864 to 157268. [2024-11-16 04:02:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157268 states, 157267 states have (on average 1.0879396186103887) internal successors, (171097), 157267 states have internal predecessors, (171097), 0 states have call successors, (0), 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 04:02:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157268 states to 157268 states and 171097 transitions. [2024-11-16 04:02:51,478 INFO L78 Accepts]: Start accepts. Automaton has 157268 states and 171097 transitions. Word has length 329 [2024-11-16 04:02:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:02:51,478 INFO L471 AbstractCegarLoop]: Abstraction has 157268 states and 171097 transitions. [2024-11-16 04:02:51,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 04:02:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 157268 states and 171097 transitions. [2024-11-16 04:02:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-16 04:02:51,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:02:51,482 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:02:51,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:02:51,483 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:02:51,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:02:51,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1081874981, now seen corresponding path program 1 times [2024-11-16 04:02:51,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:02:51,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750460726] [2024-11-16 04:02:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:02:51,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:02:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:02:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-16 04:02:52,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:02:52,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750460726] [2024-11-16 04:02:52,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750460726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:02:52,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:02:52,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:02:52,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790101690] [2024-11-16 04:02:52,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:02:52,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:02:52,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:02:52,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:02:52,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:02:52,353 INFO L87 Difference]: Start difference. First operand 157268 states and 171097 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)