./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label33.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/Problem12_label33.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 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:54:58,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:54:58,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:54:58,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:54:58,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:54:58,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:54:58,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:54:58,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:54:58,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:54:58,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:54:58,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:54:58,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:54:58,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:54:58,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:54:58,188 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:54:58,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:54:58,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:54:58,189 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:54:58,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:54:58,189 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:54:58,190 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:54:58,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:54:58,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:54:58,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:54:58,194 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:54:58,194 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:54:58,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:54:58,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:54:58,195 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:54:58,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:54:58,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:54:58,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:54:58,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:54:58,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:54:58,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:54:58,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:54:58,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:54:58,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:54:58,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:54:58,199 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:54:58,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:54:58,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:54:58,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 [2024-11-16 03:54:58,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:54:58,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:54:58,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:54:58,462 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:54:58,462 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:54:58,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2024-11-16 03:54:59,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:55:00,346 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:55:00,348 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2024-11-16 03:55:00,387 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53b81459/4dbee176b98f496587deedf372a6baf2/FLAGba2827558 [2024-11-16 03:55:00,403 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53b81459/4dbee176b98f496587deedf372a6baf2 [2024-11-16 03:55:00,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:55:00,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:55:00,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:55:00,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:55:00,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:55:00,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:55:00" (1/1) ... [2024-11-16 03:55:00,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3e0475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:00, skipping insertion in model container [2024-11-16 03:55:00,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:55:00" (1/1) ... [2024-11-16 03:55:00,565 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:55:00,825 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/Problem12_label33.c[6146,6159] [2024-11-16 03:55:01,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:55:01,523 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:55:01,547 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/Problem12_label33.c[6146,6159] [2024-11-16 03:55:01,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:55:01,958 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:55:01,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01 WrapperNode [2024-11-16 03:55:01,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:55:01,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:55:01,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:55:01,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:55:01,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,326 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-16 03:55:02,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:55:02,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:55:02,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:55:02,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:55:02,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,615 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 03:55:02,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,737 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:55:02,869 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:55:02,870 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:55:02,870 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:55:02,871 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (1/1) ... [2024-11-16 03:55:02,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:55:02,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:55:02,904 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 03:55:02,906 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 03:55:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:55:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:55:02,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:55:02,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:55:03,027 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:55:03,029 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:55:07,115 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-16 03:55:07,116 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-16 03:55:07,116 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-16 03:55:07,293 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-16 03:55:07,293 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:55:07,339 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:55:07,342 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:55:07,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:55:07 BoogieIcfgContainer [2024-11-16 03:55:07,342 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:55:07,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:55:07,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:55:07,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:55:07,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:55:00" (1/3) ... [2024-11-16 03:55:07,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2093b847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:55:07, skipping insertion in model container [2024-11-16 03:55:07,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:55:01" (2/3) ... [2024-11-16 03:55:07,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2093b847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:55:07, skipping insertion in model container [2024-11-16 03:55:07,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:55:07" (3/3) ... [2024-11-16 03:55:07,352 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2024-11-16 03:55:07,368 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:55:07,369 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:55:07,466 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:55:07,474 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;@3fb63fc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:55:07,474 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:55:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 1.9145299145299146) internal successors, (1568), 820 states have internal predecessors, (1568), 0 states have call successors, (0), 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 03:55:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-16 03:55:07,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:07,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:55:07,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:07,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1661467283, now seen corresponding path program 1 times [2024-11-16 03:55:07,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875380995] [2024-11-16 03:55:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:08,024 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 03:55:08,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875380995] [2024-11-16 03:55:08,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875380995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:08,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:55:08,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:55:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046554447] [2024-11-16 03:55:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:08,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:55:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:08,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:55:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:55:08,056 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 1.9145299145299146) internal successors, (1568), 820 states have internal predecessors, (1568), 0 states have call successors, (0), 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 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 03:55:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:14,313 INFO L93 Difference]: Finished difference Result 3149 states and 6137 transitions. [2024-11-16 03:55:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:55:14,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-16 03:55:14,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:14,340 INFO L225 Difference]: With dead ends: 3149 [2024-11-16 03:55:14,340 INFO L226 Difference]: Without dead ends: 2261 [2024-11-16 03:55:14,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:55:14,348 INFO L432 NwaCegarLoop]: 740 mSDtfsCounter, 2225 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 6772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 5499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:14,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 772 Invalid, 6772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1273 Valid, 5499 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-16 03:55:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-11-16 03:55:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2024-11-16 03:55:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 1.5738938053097344) internal successors, (3557), 2260 states have internal predecessors, (3557), 0 states have call successors, (0), 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 03:55:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3557 transitions. [2024-11-16 03:55:14,477 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3557 transitions. Word has length 51 [2024-11-16 03:55:14,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:14,479 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 3557 transitions. [2024-11-16 03:55:14,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 03:55:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3557 transitions. [2024-11-16 03:55:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-16 03:55:14,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:14,483 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, 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] [2024-11-16 03:55:14,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:55:14,483 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:14,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -800723192, now seen corresponding path program 1 times [2024-11-16 03:55:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:14,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415692334] [2024-11-16 03:55:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:55:14,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415692334] [2024-11-16 03:55:14,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415692334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:14,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:55:14,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:55:14,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585479686] [2024-11-16 03:55:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:14,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:55:14,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:14,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:55:14,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:55:14,883 INFO L87 Difference]: Start difference. First operand 2261 states and 3557 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 03:55:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:18,464 INFO L93 Difference]: Finished difference Result 6062 states and 9927 transitions. [2024-11-16 03:55:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:55:18,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-11-16 03:55:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:18,478 INFO L225 Difference]: With dead ends: 6062 [2024-11-16 03:55:18,478 INFO L226 Difference]: Without dead ends: 3765 [2024-11-16 03:55:18,482 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 03:55:18,483 INFO L432 NwaCegarLoop]: 677 mSDtfsCounter, 703 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:18,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 694 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-16 03:55:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-16 03:55:18,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3013. [2024-11-16 03:55:18,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3013 states, 3012 states have (on average 1.4312749003984064) internal successors, (4311), 3012 states have internal predecessors, (4311), 0 states have call successors, (0), 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 03:55:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 4311 transitions. [2024-11-16 03:55:18,537 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 4311 transitions. Word has length 123 [2024-11-16 03:55:18,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:18,540 INFO L471 AbstractCegarLoop]: Abstraction has 3013 states and 4311 transitions. [2024-11-16 03:55:18,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 03:55:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 4311 transitions. [2024-11-16 03:55:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-16 03:55:18,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:18,549 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:18,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:55:18,550 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:18,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1280702617, now seen corresponding path program 1 times [2024-11-16 03:55:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699807019] [2024-11-16 03:55:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:18,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 95 proven. 55 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 03:55:19,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699807019] [2024-11-16 03:55:19,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699807019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:55:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261678006] [2024-11-16 03:55:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:19,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:55:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:55:19,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:55:19,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:55:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:19,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:55:19,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:55:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-16 03:55:19,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:55:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261678006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:19,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:55:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 03:55:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781537030] [2024-11-16 03:55:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:19,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:55:19,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:19,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:55:19,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:55:19,582 INFO L87 Difference]: Start difference. First operand 3013 states and 4311 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 03:55:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:21,970 INFO L93 Difference]: Finished difference Result 8280 states and 11532 transitions. [2024-11-16 03:55:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:55:21,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 263 [2024-11-16 03:55:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:21,990 INFO L225 Difference]: With dead ends: 8280 [2024-11-16 03:55:21,990 INFO L226 Difference]: Without dead ends: 5269 [2024-11-16 03:55:21,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:55:21,997 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 698 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:21,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 430 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 03:55:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2024-11-16 03:55:22,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 5269. [2024-11-16 03:55:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5268 states have (on average 1.1979878511769173) internal successors, (6311), 5268 states have internal predecessors, (6311), 0 states have call successors, (0), 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 03:55:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 6311 transitions. [2024-11-16 03:55:22,152 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 6311 transitions. Word has length 263 [2024-11-16 03:55:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:22,153 INFO L471 AbstractCegarLoop]: Abstraction has 5269 states and 6311 transitions. [2024-11-16 03:55:22,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 03:55:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 6311 transitions. [2024-11-16 03:55:22,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-16 03:55:22,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:22,158 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:22,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:55:22,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:55:22,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:22,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:22,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2057286540, now seen corresponding path program 1 times [2024-11-16 03:55:22,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:22,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601350715] [2024-11-16 03:55:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:22,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 03:55:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601350715] [2024-11-16 03:55:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601350715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:22,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:55:22,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:55:22,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813995711] [2024-11-16 03:55:22,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:22,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:55:22,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:55:22,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:55:22,866 INFO L87 Difference]: Start difference. First operand 5269 states and 6311 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 03:55:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:26,007 INFO L93 Difference]: Finished difference Result 12081 states and 15088 transitions. [2024-11-16 03:55:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:55:26,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 265 [2024-11-16 03:55:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:26,031 INFO L225 Difference]: With dead ends: 12081 [2024-11-16 03:55:26,031 INFO L226 Difference]: Without dead ends: 7528 [2024-11-16 03:55:26,039 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 03:55:26,041 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 851 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 3961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:26,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 334 Invalid, 3961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 03:55:26,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2024-11-16 03:55:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 7525. [2024-11-16 03:55:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7525 states, 7524 states have (on average 1.1810207336523126) internal successors, (8886), 7524 states have internal predecessors, (8886), 0 states have call successors, (0), 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 03:55:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7525 states to 7525 states and 8886 transitions. [2024-11-16 03:55:26,166 INFO L78 Accepts]: Start accepts. Automaton has 7525 states and 8886 transitions. Word has length 265 [2024-11-16 03:55:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:26,167 INFO L471 AbstractCegarLoop]: Abstraction has 7525 states and 8886 transitions. [2024-11-16 03:55:26,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 03:55:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7525 states and 8886 transitions. [2024-11-16 03:55:26,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-16 03:55:26,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:26,172 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, 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, 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] [2024-11-16 03:55:26,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:55:26,174 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:26,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:26,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2033926736, now seen corresponding path program 1 times [2024-11-16 03:55:26,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:26,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081833986] [2024-11-16 03:55:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 143 proven. 110 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-16 03:55:26,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081833986] [2024-11-16 03:55:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081833986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:55:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209955800] [2024-11-16 03:55:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:26,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:55:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:55:26,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:55:26,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 03:55:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:26,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:55:26,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:55:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 03:55:26,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:55:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209955800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:26,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:55:26,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:55:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516676415] [2024-11-16 03:55:26,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:26,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:55:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:55:26,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:55:26,868 INFO L87 Difference]: Start difference. First operand 7525 states and 8886 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 03:55:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:29,320 INFO L93 Difference]: Finished difference Result 16552 states and 20170 transitions. [2024-11-16 03:55:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:55:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 343 [2024-11-16 03:55:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:29,345 INFO L225 Difference]: With dead ends: 16552 [2024-11-16 03:55:29,345 INFO L226 Difference]: Without dead ends: 9781 [2024-11-16 03:55:29,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:55:29,415 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 790 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:29,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 238 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 03:55:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9781 states. [2024-11-16 03:55:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9781 to 9781. [2024-11-16 03:55:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9781 states, 9780 states have (on average 1.185685071574642) internal successors, (11596), 9780 states have internal predecessors, (11596), 0 states have call successors, (0), 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 03:55:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 11596 transitions. [2024-11-16 03:55:29,563 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 11596 transitions. Word has length 343 [2024-11-16 03:55:29,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:29,564 INFO L471 AbstractCegarLoop]: Abstraction has 9781 states and 11596 transitions. [2024-11-16 03:55:29,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 03:55:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 11596 transitions. [2024-11-16 03:55:29,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-16 03:55:29,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:29,576 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:55:29,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 03:55:29,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:55:29,777 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:29,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1798493905, now seen corresponding path program 1 times [2024-11-16 03:55:29,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:29,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235891022] [2024-11-16 03:55:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:29,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 03:55:30,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:30,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235891022] [2024-11-16 03:55:30,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235891022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:30,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:55:30,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:55:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146517427] [2024-11-16 03:55:30,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:30,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:55:30,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:30,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:55:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:55:30,058 INFO L87 Difference]: Start difference. First operand 9781 states and 11596 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 03:55:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:32,653 INFO L93 Difference]: Finished difference Result 27080 states and 32507 transitions. [2024-11-16 03:55:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:55:32,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 381 [2024-11-16 03:55:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:32,697 INFO L225 Difference]: With dead ends: 27080 [2024-11-16 03:55:32,697 INFO L226 Difference]: Without dead ends: 18053 [2024-11-16 03:55:32,710 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 03:55:32,712 INFO L432 NwaCegarLoop]: 1261 mSDtfsCounter, 635 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 3021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:32,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1271 Invalid, 3021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 03:55:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2024-11-16 03:55:32,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 16549. [2024-11-16 03:55:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16549 states, 16548 states have (on average 1.18153251148175) internal successors, (19552), 16548 states have internal predecessors, (19552), 0 states have call successors, (0), 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 03:55:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16549 states to 16549 states and 19552 transitions. [2024-11-16 03:55:32,996 INFO L78 Accepts]: Start accepts. Automaton has 16549 states and 19552 transitions. Word has length 381 [2024-11-16 03:55:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:32,997 INFO L471 AbstractCegarLoop]: Abstraction has 16549 states and 19552 transitions. [2024-11-16 03:55:32,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 03:55:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 16549 states and 19552 transitions. [2024-11-16 03:55:33,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-16 03:55:33,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:33,005 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, 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, 2, 2, 2, 2, 2, 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] [2024-11-16 03:55:33,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:55:33,006 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:33,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:33,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1130518757, now seen corresponding path program 1 times [2024-11-16 03:55:33,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:33,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420095774] [2024-11-16 03:55:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:33,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-16 03:55:33,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420095774] [2024-11-16 03:55:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420095774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:33,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:55:33,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:55:33,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589163347] [2024-11-16 03:55:33,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:33,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:55:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:55:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:55:33,274 INFO L87 Difference]: Start difference. First operand 16549 states and 19552 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 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 03:55:36,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:36,143 INFO L93 Difference]: Finished difference Result 39112 states and 46882 transitions. [2024-11-16 03:55:36,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:55:36,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 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 382 [2024-11-16 03:55:36,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:36,184 INFO L225 Difference]: With dead ends: 39112 [2024-11-16 03:55:36,184 INFO L226 Difference]: Without dead ends: 23317 [2024-11-16 03:55:36,197 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 03:55:36,199 INFO L432 NwaCegarLoop]: 1380 mSDtfsCounter, 708 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:36,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 1390 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 03:55:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23317 states. [2024-11-16 03:55:36,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23317 to 22565. [2024-11-16 03:55:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22565 states, 22564 states have (on average 1.1839212905513208) internal successors, (26714), 22564 states have internal predecessors, (26714), 0 states have call successors, (0), 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 03:55:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22565 states to 22565 states and 26714 transitions. [2024-11-16 03:55:36,547 INFO L78 Accepts]: Start accepts. Automaton has 22565 states and 26714 transitions. Word has length 382 [2024-11-16 03:55:36,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:36,548 INFO L471 AbstractCegarLoop]: Abstraction has 22565 states and 26714 transitions. [2024-11-16 03:55:36,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 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 03:55:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 22565 states and 26714 transitions. [2024-11-16 03:55:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-16 03:55:36,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:36,558 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:55:36,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:55:36,558 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:36,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1861512313, now seen corresponding path program 1 times [2024-11-16 03:55:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672562436] [2024-11-16 03:55:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-16 03:55:36,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:36,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672562436] [2024-11-16 03:55:36,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672562436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:36,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:55:36,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:55:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352651848] [2024-11-16 03:55:36,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:36,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:55:36,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:36,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:55:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:55:36,834 INFO L87 Difference]: Start difference. First operand 22565 states and 26714 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:55:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:39,453 INFO L93 Difference]: Finished difference Result 63928 states and 76250 transitions. [2024-11-16 03:55:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:55:39,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2024-11-16 03:55:39,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:39,507 INFO L225 Difference]: With dead ends: 63928 [2024-11-16 03:55:39,507 INFO L226 Difference]: Without dead ends: 38357 [2024-11-16 03:55:39,523 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 03:55:39,524 INFO L432 NwaCegarLoop]: 1289 mSDtfsCounter, 744 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:39,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1299 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 03:55:39,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38357 states. [2024-11-16 03:55:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38357 to 37605. [2024-11-16 03:55:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37605 states, 37604 states have (on average 1.1396925858951175) internal successors, (42857), 37604 states have internal predecessors, (42857), 0 states have call successors, (0), 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 03:55:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37605 states to 37605 states and 42857 transitions. [2024-11-16 03:55:39,897 INFO L78 Accepts]: Start accepts. Automaton has 37605 states and 42857 transitions. Word has length 385 [2024-11-16 03:55:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:39,898 INFO L471 AbstractCegarLoop]: Abstraction has 37605 states and 42857 transitions. [2024-11-16 03:55:39,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:55:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 37605 states and 42857 transitions. [2024-11-16 03:55:39,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-16 03:55:39,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:39,905 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, 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, 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] [2024-11-16 03:55:39,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:55:39,906 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:39,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash -749075623, now seen corresponding path program 1 times [2024-11-16 03:55:39,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:39,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495338604] [2024-11-16 03:55:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:39,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-16 03:55:40,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:40,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495338604] [2024-11-16 03:55:40,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495338604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:40,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:55:40,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:55:40,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665661063] [2024-11-16 03:55:40,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:40,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:55:40,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:40,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:55:40,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:55:40,208 INFO L87 Difference]: Start difference. First operand 37605 states and 42857 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 03:55:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:42,746 INFO L93 Difference]: Finished difference Result 85736 states and 98947 transitions. [2024-11-16 03:55:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:55:42,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 414 [2024-11-16 03:55:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:42,812 INFO L225 Difference]: With dead ends: 85736 [2024-11-16 03:55:42,812 INFO L226 Difference]: Without dead ends: 48885 [2024-11-16 03:55:42,840 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 03:55:42,841 INFO L432 NwaCegarLoop]: 1257 mSDtfsCounter, 669 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:42,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1267 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 03:55:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48885 states. [2024-11-16 03:55:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48885 to 47381. [2024-11-16 03:55:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47381 states, 47380 states have (on average 1.1254326720135077) internal successors, (53323), 47380 states have internal predecessors, (53323), 0 states have call successors, (0), 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 03:55:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47381 states to 47381 states and 53323 transitions. [2024-11-16 03:55:43,318 INFO L78 Accepts]: Start accepts. Automaton has 47381 states and 53323 transitions. Word has length 414 [2024-11-16 03:55:43,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:43,319 INFO L471 AbstractCegarLoop]: Abstraction has 47381 states and 53323 transitions. [2024-11-16 03:55:43,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 03:55:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 47381 states and 53323 transitions. [2024-11-16 03:55:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-16 03:55:43,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:43,328 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:55:43,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 03:55:43,328 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:43,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1382941870, now seen corresponding path program 1 times [2024-11-16 03:55:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:43,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177564361] [2024-11-16 03:55:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:43,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-16 03:55:43,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:43,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177564361] [2024-11-16 03:55:43,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177564361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:43,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:55:43,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:55:43,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162592378] [2024-11-16 03:55:43,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:43,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:55:43,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:43,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:55:43,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:55:43,686 INFO L87 Difference]: Start difference. First operand 47381 states and 53323 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 03:55:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:46,286 INFO L93 Difference]: Finished difference Result 94008 states and 105887 transitions. [2024-11-16 03:55:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:55:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 448 [2024-11-16 03:55:46,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:46,343 INFO L225 Difference]: With dead ends: 94008 [2024-11-16 03:55:46,343 INFO L226 Difference]: Without dead ends: 47381 [2024-11-16 03:55:46,379 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 03:55:46,380 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 685 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:46,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 244 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 03:55:46,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47381 states. [2024-11-16 03:55:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47381 to 47381. [2024-11-16 03:55:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47381 states, 47380 states have (on average 1.1207682566483748) internal successors, (53102), 47380 states have internal predecessors, (53102), 0 states have call successors, (0), 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 03:55:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47381 states to 47381 states and 53102 transitions. [2024-11-16 03:55:47,200 INFO L78 Accepts]: Start accepts. Automaton has 47381 states and 53102 transitions. Word has length 448 [2024-11-16 03:55:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:47,201 INFO L471 AbstractCegarLoop]: Abstraction has 47381 states and 53102 transitions. [2024-11-16 03:55:47,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 03:55:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 47381 states and 53102 transitions. [2024-11-16 03:55:47,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-16 03:55:47,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:47,217 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, 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, 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] [2024-11-16 03:55:47,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:55:47,218 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:47,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:47,219 INFO L85 PathProgramCache]: Analyzing trace with hash -447655427, now seen corresponding path program 1 times [2024-11-16 03:55:47,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:47,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622201162] [2024-11-16 03:55:47,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:47,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 427 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:55:49,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:49,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622201162] [2024-11-16 03:55:49,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622201162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:55:49,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058517459] [2024-11-16 03:55:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:49,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:55:49,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:55:49,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:55:49,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 03:55:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:49,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:55:49,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:55:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-16 03:55:50,494 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:55:50,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058517459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:50,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:55:50,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-16 03:55:50,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330855342] [2024-11-16 03:55:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:50,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:55:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:55:50,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 03:55:50,497 INFO L87 Difference]: Start difference. First operand 47381 states and 53102 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 03:55:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:55:55,179 INFO L93 Difference]: Finished difference Result 143643 states and 162538 transitions. [2024-11-16 03:55:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:55:55,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 489 [2024-11-16 03:55:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:55:55,299 INFO L225 Difference]: With dead ends: 143643 [2024-11-16 03:55:55,299 INFO L226 Difference]: Without dead ends: 97016 [2024-11-16 03:55:55,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 03:55:55,319 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 1850 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4625 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 5322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 4625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-16 03:55:55,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 65 Invalid, 5322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 4625 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-16 03:55:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97016 states. [2024-11-16 03:55:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97016 to 96261. [2024-11-16 03:55:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96261 states, 96260 states have (on average 1.1283399127363392) internal successors, (108614), 96260 states have internal predecessors, (108614), 0 states have call successors, (0), 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 03:55:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96261 states to 96261 states and 108614 transitions. [2024-11-16 03:55:56,681 INFO L78 Accepts]: Start accepts. Automaton has 96261 states and 108614 transitions. Word has length 489 [2024-11-16 03:55:56,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:55:56,682 INFO L471 AbstractCegarLoop]: Abstraction has 96261 states and 108614 transitions. [2024-11-16 03:55:56,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 03:55:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 96261 states and 108614 transitions. [2024-11-16 03:55:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-16 03:55:56,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:55:56,703 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 03:55:56,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 03:55:56,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:55:56,904 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:55:56,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:55:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1363834617, now seen corresponding path program 1 times [2024-11-16 03:55:56,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:55:56,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802594017] [2024-11-16 03:55:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:56,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:55:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 633 proven. 16 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-16 03:55:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:55:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802594017] [2024-11-16 03:55:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802594017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:55:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957344161] [2024-11-16 03:55:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:55:57,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:55:57,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:55:57,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:55:57,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 03:55:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:55:58,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:55:58,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:55:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-16 03:55:58,326 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:55:58,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957344161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:55:58,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:55:58,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:55:58,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078668870] [2024-11-16 03:55:58,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:55:58,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:55:58,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:55:58,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:55:58,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:55:58,330 INFO L87 Difference]: Start difference. First operand 96261 states and 108614 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 03:56:01,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:01,521 INFO L93 Difference]: Finished difference Result 235384 states and 268544 transitions. [2024-11-16 03:56:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:56:01,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 536 [2024-11-16 03:56:01,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:01,704 INFO L225 Difference]: With dead ends: 235384 [2024-11-16 03:56:01,704 INFO L226 Difference]: Without dead ends: 139877 [2024-11-16 03:56:01,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:56:01,747 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 702 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:56:01,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 484 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 03:56:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139877 states. [2024-11-16 03:56:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139877 to 134613. [2024-11-16 03:56:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134613 states, 134612 states have (on average 1.1147966006002437) internal successors, (150065), 134612 states have internal predecessors, (150065), 0 states have call successors, (0), 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 03:56:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134613 states to 134613 states and 150065 transitions. [2024-11-16 03:56:03,663 INFO L78 Accepts]: Start accepts. Automaton has 134613 states and 150065 transitions. Word has length 536 [2024-11-16 03:56:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:56:03,664 INFO L471 AbstractCegarLoop]: Abstraction has 134613 states and 150065 transitions. [2024-11-16 03:56:03,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 03:56:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 134613 states and 150065 transitions. [2024-11-16 03:56:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-11-16 03:56:03,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:56:03,680 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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 03:56:03,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 03:56:03,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:56:03,881 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:56:03,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:56:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash 304137979, now seen corresponding path program 1 times [2024-11-16 03:56:03,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:56:03,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201108699] [2024-11-16 03:56:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:56:03,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:56:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:56:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 838 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-16 03:56:04,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:56:04,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201108699] [2024-11-16 03:56:04,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201108699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:56:04,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:56:04,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:56:04,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420054551] [2024-11-16 03:56:04,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:56:04,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:56:04,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:56:04,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:56:04,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:04,464 INFO L87 Difference]: Start difference. First operand 134613 states and 150065 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 03:56:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:07,602 INFO L93 Difference]: Finished difference Result 272232 states and 303278 transitions. [2024-11-16 03:56:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:56:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 586 [2024-11-16 03:56:07,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:07,762 INFO L225 Difference]: With dead ends: 272232 [2024-11-16 03:56:07,762 INFO L226 Difference]: Without dead ends: 138373 [2024-11-16 03:56:07,829 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 03:56:07,830 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 736 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:56:07,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 233 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 03:56:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138373 states. [2024-11-16 03:56:09,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138373 to 133861. [2024-11-16 03:56:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133861 states, 133860 states have (on average 1.1112879127446587) internal successors, (148757), 133860 states have internal predecessors, (148757), 0 states have call successors, (0), 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 03:56:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133861 states to 133861 states and 148757 transitions. [2024-11-16 03:56:09,415 INFO L78 Accepts]: Start accepts. Automaton has 133861 states and 148757 transitions. Word has length 586 [2024-11-16 03:56:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:56:09,415 INFO L471 AbstractCegarLoop]: Abstraction has 133861 states and 148757 transitions. [2024-11-16 03:56:09,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 03:56:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 133861 states and 148757 transitions. [2024-11-16 03:56:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-11-16 03:56:09,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:56:09,769 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 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 03:56:09,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:56:09,769 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:56:09,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:56:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash -55522696, now seen corresponding path program 1 times [2024-11-16 03:56:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:56:09,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807193310] [2024-11-16 03:56:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:56:09,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:56:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:56:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-16 03:56:10,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:56:10,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807193310] [2024-11-16 03:56:10,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807193310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:56:10,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:56:10,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:56:10,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794988319] [2024-11-16 03:56:10,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:56:10,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:56:10,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:56:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:56:10,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:56:10,351 INFO L87 Difference]: Start difference. First operand 133861 states and 148757 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 03:56:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:56:13,457 INFO L93 Difference]: Finished difference Result 272232 states and 302146 transitions. [2024-11-16 03:56:13,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:56:13,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 597 [2024-11-16 03:56:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:56:13,603 INFO L225 Difference]: With dead ends: 272232 [2024-11-16 03:56:13,603 INFO L226 Difference]: Without dead ends: 139125 [2024-11-16 03:56:13,674 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 03:56:13,674 INFO L432 NwaCegarLoop]: 1176 mSDtfsCounter, 764 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:56:13,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1186 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 03:56:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139125 states.