./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label14.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_label14.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 ada1a27904128215b4edfdaf35827c452e538bc81c43cd0aac0f11f9e4d77236 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:53:08,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:53:08,932 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:53:08,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:53:08,939 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:53:08,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:53:08,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:53:08,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:53:08,974 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:53:08,976 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:53:08,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:53:08,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:53:08,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:53:08,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:53:08,979 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:53:08,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:53:08,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:53:08,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:53:08,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:53:08,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:53:08,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:53:08,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:53:08,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:53:08,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:53:08,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:53:08,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:53:08,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:53:08,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:53:08,986 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:53:08,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:53:08,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:53:08,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:53:08,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:53:08,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:53:08,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:53:08,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:53:08,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:53:08,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:53:08,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:53:08,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:53:08,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:53:08,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:53:08,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ada1a27904128215b4edfdaf35827c452e538bc81c43cd0aac0f11f9e4d77236 [2024-11-16 03:53:09,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:53:09,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:53:09,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:53:09,251 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:53:09,252 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:53:09,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label14.c [2024-11-16 03:53:10,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:53:11,072 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:53:11,073 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label14.c [2024-11-16 03:53:11,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e15fa05/8767dce5da5f4ecb93651e4bdd5632e4/FLAG9e82df62d [2024-11-16 03:53:11,121 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19e15fa05/8767dce5da5f4ecb93651e4bdd5632e4 [2024-11-16 03:53:11,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:53:11,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:53:11,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:53:11,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:53:11,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:53:11,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:11" (1/1) ... [2024-11-16 03:53:11,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0dc0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:11, skipping insertion in model container [2024-11-16 03:53:11,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:53:11" (1/1) ... [2024-11-16 03:53:11,268 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:53:11,517 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_label14.c[6042,6055] [2024-11-16 03:53:12,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:53:12,251 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:53:12,280 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_label14.c[6042,6055] [2024-11-16 03:53:12,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:53:12,754 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:53:12,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12 WrapperNode [2024-11-16 03:53:12,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:53:12,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:53:12,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:53:12,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:53:12,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:12,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,149 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-16 03:53:13,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:53:13,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:53:13,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:53:13,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:53:13,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,191 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,357 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 03:53:13,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,584 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:53:13,685 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:53:13,685 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:53:13,685 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:53:13,686 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (1/1) ... [2024-11-16 03:53:13,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:53:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:53:13,721 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 03:53:13,723 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 03:53:13,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:53:13,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:53:13,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:53:13,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:53:13,846 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:53:13,849 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:53:18,043 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-16 03:53:18,043 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-16 03:53:18,043 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-16 03:53:18,238 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-16 03:53:18,239 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:53:18,281 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:53:18,281 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:53:18,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:53:18 BoogieIcfgContainer [2024-11-16 03:53:18,283 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:53:18,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:53:18,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:53:18,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:53:18,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:53:11" (1/3) ... [2024-11-16 03:53:18,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150d0499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:18, skipping insertion in model container [2024-11-16 03:53:18,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:53:12" (2/3) ... [2024-11-16 03:53:18,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150d0499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:53:18, skipping insertion in model container [2024-11-16 03:53:18,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:53:18" (3/3) ... [2024-11-16 03:53:18,295 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label14.c [2024-11-16 03:53:18,311 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:53:18,313 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:53:18,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:53:18,414 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;@5d486183, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:53:18,415 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:53:18,423 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 03:53:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 03:53:18,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:18,433 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] [2024-11-16 03:53:18,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:18,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash -223499911, now seen corresponding path program 1 times [2024-11-16 03:53:18,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:18,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005636162] [2024-11-16 03:53:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:18,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:19,020 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 03:53:19,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:19,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005636162] [2024-11-16 03:53:19,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005636162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:19,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:19,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:19,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575914326] [2024-11-16 03:53:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:19,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:53:19,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:53:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:53:19,058 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 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 03:53:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:25,188 INFO L93 Difference]: Finished difference Result 3149 states and 6137 transitions. [2024-11-16 03:53:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:53:25,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-11-16 03:53:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:25,216 INFO L225 Difference]: With dead ends: 3149 [2024-11-16 03:53:25,217 INFO L226 Difference]: Without dead ends: 2261 [2024-11-16 03:53:25,223 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 03:53:25,225 INFO L432 NwaCegarLoop]: 740 mSDtfsCounter, 2227 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5499 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 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, 5.9s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:25,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2227 Valid, 772 Invalid, 6772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1273 Valid, 5499 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-16 03:53:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2024-11-16 03:53:25,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2261. [2024-11-16 03:53:25,361 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 03:53:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3557 transitions. [2024-11-16 03:53:25,370 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3557 transitions. Word has length 50 [2024-11-16 03:53:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:25,370 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 3557 transitions. [2024-11-16 03:53:25,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 03:53:25,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3557 transitions. [2024-11-16 03:53:25,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-16 03:53:25,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:25,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:25,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:53:25,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:25,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 721544967, now seen corresponding path program 1 times [2024-11-16 03:53:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287106938] [2024-11-16 03:53:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:53:25,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:25,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287106938] [2024-11-16 03:53:25,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287106938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:25,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:25,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:25,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387876643] [2024-11-16 03:53:25,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:25,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:53:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:53:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:53:25,780 INFO L87 Difference]: Start difference. First operand 2261 states and 3557 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:53:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:29,232 INFO L93 Difference]: Finished difference Result 6062 states and 9927 transitions. [2024-11-16 03:53:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:53:29,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2024-11-16 03:53:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:29,246 INFO L225 Difference]: With dead ends: 6062 [2024-11-16 03:53:29,246 INFO L226 Difference]: Without dead ends: 3765 [2024-11-16 03:53:29,249 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 03:53:29,251 INFO L432 NwaCegarLoop]: 677 mSDtfsCounter, 703 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:29,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 694 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-16 03:53:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-16 03:53:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3013. [2024-11-16 03:53:29,302 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 03:53:29,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 4311 transitions. [2024-11-16 03:53:29,307 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 4311 transitions. Word has length 122 [2024-11-16 03:53:29,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:29,308 INFO L471 AbstractCegarLoop]: Abstraction has 3013 states and 4311 transitions. [2024-11-16 03:53:29,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:53:29,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 4311 transitions. [2024-11-16 03:53:29,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-16 03:53:29,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:29,316 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:53:29,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:53:29,316 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:29,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1505991595, now seen corresponding path program 1 times [2024-11-16 03:53:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:29,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555033468] [2024-11-16 03:53:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:29,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:29,988 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 93 proven. 55 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-16 03:53:29,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555033468] [2024-11-16 03:53:29,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555033468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:53:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304470798] [2024-11-16 03:53:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:29,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:53:29,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:53:29,994 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 03:53:29,995 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 03:53:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:30,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:53:30,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:53:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-16 03:53:30,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:53:30,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304470798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:30,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:53:30,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-16 03:53:30,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244327042] [2024-11-16 03:53:30,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:30,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:30,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:53:30,435 INFO L87 Difference]: Start difference. First operand 3013 states and 4311 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 03:53:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:32,785 INFO L93 Difference]: Finished difference Result 8280 states and 11532 transitions. [2024-11-16 03:53:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:32,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2024-11-16 03:53:32,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:32,805 INFO L225 Difference]: With dead ends: 8280 [2024-11-16 03:53:32,805 INFO L226 Difference]: Without dead ends: 5269 [2024-11-16 03:53:32,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 261 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 03:53:32,813 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 03:53:32,814 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 03:53:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5269 states. [2024-11-16 03:53:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5269 to 5269. [2024-11-16 03:53:32,884 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 03:53:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 6311 transitions. [2024-11-16 03:53:32,893 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 6311 transitions. Word has length 262 [2024-11-16 03:53:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:32,894 INFO L471 AbstractCegarLoop]: Abstraction has 5269 states and 6311 transitions. [2024-11-16 03:53:32,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 03:53:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 6311 transitions. [2024-11-16 03:53:32,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-16 03:53:32,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:32,899 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, 2, 2, 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 03:53:32,918 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 03:53:33,099 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 03:53:33,101 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:33,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:33,101 INFO L85 PathProgramCache]: Analyzing trace with hash 552668518, now seen corresponding path program 1 times [2024-11-16 03:53:33,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:33,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049456366] [2024-11-16 03:53:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:33,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 03:53:33,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049456366] [2024-11-16 03:53:33,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049456366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:33,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:33,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95624091] [2024-11-16 03:53:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:33,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:53:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:33,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:53:33,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:53:33,540 INFO L87 Difference]: Start difference. First operand 5269 states and 6311 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 03:53:36,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:36,689 INFO L93 Difference]: Finished difference Result 12081 states and 15088 transitions. [2024-11-16 03:53:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:53:36,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 264 [2024-11-16 03:53:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:36,717 INFO L225 Difference]: With dead ends: 12081 [2024-11-16 03:53:36,718 INFO L226 Difference]: Without dead ends: 7528 [2024-11-16 03:53:36,725 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 03:53:36,731 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 776 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:36,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 336 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-16 03:53:36,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2024-11-16 03:53:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 7525. [2024-11-16 03:53:36,857 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 03:53:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7525 states to 7525 states and 8886 transitions. [2024-11-16 03:53:36,870 INFO L78 Accepts]: Start accepts. Automaton has 7525 states and 8886 transitions. Word has length 264 [2024-11-16 03:53:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:36,870 INFO L471 AbstractCegarLoop]: Abstraction has 7525 states and 8886 transitions. [2024-11-16 03:53:36,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 03:53:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7525 states and 8886 transitions. [2024-11-16 03:53:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-16 03:53:36,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:36,877 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:36,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:53:36,879 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:36,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:36,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1923964325, now seen corresponding path program 1 times [2024-11-16 03:53:36,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:36,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610392747] [2024-11-16 03:53:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:36,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 140 proven. 110 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-16 03:53:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610392747] [2024-11-16 03:53:37,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610392747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:53:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81264183] [2024-11-16 03:53:37,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:37,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:53:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:53:37,465 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 03:53:37,467 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 03:53:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:37,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 03:53:37,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:53:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-16 03:53:37,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:53:37,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81264183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:37,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:53:37,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-16 03:53:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729738546] [2024-11-16 03:53:37,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:37,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:37,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:37,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:37,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:53:37,720 INFO L87 Difference]: Start difference. First operand 7525 states and 8886 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 03:53:40,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:40,380 INFO L93 Difference]: Finished difference Result 16552 states and 20170 transitions. [2024-11-16 03:53:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:40,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 342 [2024-11-16 03:53:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:40,413 INFO L225 Difference]: With dead ends: 16552 [2024-11-16 03:53:40,413 INFO L226 Difference]: Without dead ends: 9781 [2024-11-16 03:53:40,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 341 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 03:53:40,425 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 790 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 818 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:40,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 238 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [818 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 03:53:40,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9781 states. [2024-11-16 03:53:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9781 to 9781. [2024-11-16 03:53:40,561 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 03:53:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 11596 transitions. [2024-11-16 03:53:40,579 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 11596 transitions. Word has length 342 [2024-11-16 03:53:40,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:40,580 INFO L471 AbstractCegarLoop]: Abstraction has 9781 states and 11596 transitions. [2024-11-16 03:53:40,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 03:53:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 11596 transitions. [2024-11-16 03:53:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-16 03:53:40,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:40,591 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:40,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 03:53:40,792 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 03:53:40,793 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:40,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 39956934, now seen corresponding path program 1 times [2024-11-16 03:53:40,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:40,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263660770] [2024-11-16 03:53:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:40,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-16 03:53:41,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:41,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263660770] [2024-11-16 03:53:41,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263660770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:41,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:41,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958706867] [2024-11-16 03:53:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:41,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:41,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:41,088 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 03:53:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:43,958 INFO L93 Difference]: Finished difference Result 27080 states and 32507 transitions. [2024-11-16 03:53:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:43,958 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 380 [2024-11-16 03:53:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:43,998 INFO L225 Difference]: With dead ends: 27080 [2024-11-16 03:53:43,998 INFO L226 Difference]: Without dead ends: 18053 [2024-11-16 03:53:44,010 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 03:53:44,010 INFO L432 NwaCegarLoop]: 1261 mSDtfsCounter, 635 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:44,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1271 Invalid, 3021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 03:53:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2024-11-16 03:53:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 16549. [2024-11-16 03:53:44,291 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 03:53:44,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16549 states to 16549 states and 19552 transitions. [2024-11-16 03:53:44,326 INFO L78 Accepts]: Start accepts. Automaton has 16549 states and 19552 transitions. Word has length 380 [2024-11-16 03:53:44,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:44,327 INFO L471 AbstractCegarLoop]: Abstraction has 16549 states and 19552 transitions. [2024-11-16 03:53:44,328 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 03:53:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 16549 states and 19552 transitions. [2024-11-16 03:53:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-16 03:53:44,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:44,337 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 03:53:44,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:53:44,337 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:44,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash -27199256, now seen corresponding path program 1 times [2024-11-16 03:53:44,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:44,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579715119] [2024-11-16 03:53:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:44,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-16 03:53:44,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:44,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579715119] [2024-11-16 03:53:44,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579715119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:44,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:44,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:44,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070837778] [2024-11-16 03:53:44,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:44,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:44,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:44,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:44,586 INFO L87 Difference]: Start difference. First operand 16549 states and 19552 transitions. Second operand has 3 states, 3 states have (on average 65.0) 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 03:53:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:47,206 INFO L93 Difference]: Finished difference Result 45128 states and 54008 transitions. [2024-11-16 03:53:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) 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 381 [2024-11-16 03:53:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:47,264 INFO L225 Difference]: With dead ends: 45128 [2024-11-16 03:53:47,265 INFO L226 Difference]: Without dead ends: 29333 [2024-11-16 03:53:47,289 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 03:53:47,290 INFO L432 NwaCegarLoop]: 1340 mSDtfsCounter, 726 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:47,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1350 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 03:53:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29333 states. [2024-11-16 03:53:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29333 to 27829. [2024-11-16 03:53:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27829 states, 27828 states have (on average 1.142913612189162) internal successors, (31805), 27828 states have internal predecessors, (31805), 0 states have call successors, (0), 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 03:53:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27829 states to 27829 states and 31805 transitions. [2024-11-16 03:53:47,719 INFO L78 Accepts]: Start accepts. Automaton has 27829 states and 31805 transitions. Word has length 381 [2024-11-16 03:53:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:47,720 INFO L471 AbstractCegarLoop]: Abstraction has 27829 states and 31805 transitions. [2024-11-16 03:53:47,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) 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 03:53:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 27829 states and 31805 transitions. [2024-11-16 03:53:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-16 03:53:47,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:47,728 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:47,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:53:47,728 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:47,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:47,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1332005956, now seen corresponding path program 1 times [2024-11-16 03:53:47,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:47,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220516448] [2024-11-16 03:53:47,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:47,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-16 03:53:48,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:48,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220516448] [2024-11-16 03:53:48,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220516448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:48,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:48,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:48,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329118381] [2024-11-16 03:53:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:48,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:48,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:48,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:48,014 INFO L87 Difference]: Start difference. First operand 27829 states and 31805 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 03:53:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:50,615 INFO L93 Difference]: Finished difference Result 67688 states and 77965 transitions. [2024-11-16 03:53:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:50,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 384 [2024-11-16 03:53:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:50,669 INFO L225 Difference]: With dead ends: 67688 [2024-11-16 03:53:50,669 INFO L226 Difference]: Without dead ends: 40613 [2024-11-16 03:53:50,696 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 03:53:50,697 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 731 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:50,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 301 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 03:53:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40613 states. [2024-11-16 03:53:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40613 to 38357. [2024-11-16 03:53:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38357 states, 38356 states have (on average 1.1449577641047033) internal successors, (43916), 38356 states have internal predecessors, (43916), 0 states have call successors, (0), 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 03:53:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38357 states to 38357 states and 43916 transitions. [2024-11-16 03:53:51,105 INFO L78 Accepts]: Start accepts. Automaton has 38357 states and 43916 transitions. Word has length 384 [2024-11-16 03:53:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:51,105 INFO L471 AbstractCegarLoop]: Abstraction has 38357 states and 43916 transitions. [2024-11-16 03:53:51,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 03:53:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 38357 states and 43916 transitions. [2024-11-16 03:53:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-16 03:53:51,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:51,120 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, 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, 2, 2, 2, 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] [2024-11-16 03:53:51,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:53:51,120 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:51,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1107545013, now seen corresponding path program 1 times [2024-11-16 03:53:51,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:51,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51781507] [2024-11-16 03:53:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:51,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-16 03:53:51,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51781507] [2024-11-16 03:53:51,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51781507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:51,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979845841] [2024-11-16 03:53:51,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:51,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:51,462 INFO L87 Difference]: Start difference. First operand 38357 states and 43916 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:53:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:54,111 INFO L93 Difference]: Finished difference Result 95512 states and 110764 transitions. [2024-11-16 03:53:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2024-11-16 03:53:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:54,185 INFO L225 Difference]: With dead ends: 95512 [2024-11-16 03:53:54,185 INFO L226 Difference]: Without dead ends: 54901 [2024-11-16 03:53:54,219 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 03:53:54,220 INFO L432 NwaCegarLoop]: 1287 mSDtfsCounter, 706 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:54,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1295 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 03:53:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54901 states. [2024-11-16 03:53:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54901 to 54149. [2024-11-16 03:53:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54149 states, 54148 states have (on average 1.1239196276870798) internal successors, (60858), 54148 states have internal predecessors, (60858), 0 states have call successors, (0), 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 03:53:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54149 states to 54149 states and 60858 transitions. [2024-11-16 03:53:55,123 INFO L78 Accepts]: Start accepts. Automaton has 54149 states and 60858 transitions. Word has length 475 [2024-11-16 03:53:55,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:55,124 INFO L471 AbstractCegarLoop]: Abstraction has 54149 states and 60858 transitions. [2024-11-16 03:53:55,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:53:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 54149 states and 60858 transitions. [2024-11-16 03:53:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-16 03:53:55,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:55,143 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2024-11-16 03:53:55,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 03:53:55,144 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:55,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash 970825319, now seen corresponding path program 1 times [2024-11-16 03:53:55,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:55,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469884476] [2024-11-16 03:53:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:53:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 602 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-16 03:53:55,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:53:55,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469884476] [2024-11-16 03:53:55,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469884476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:53:55,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:53:55,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:53:55,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204358897] [2024-11-16 03:53:55,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:53:55,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:53:55,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:53:55,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:53:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:53:55,831 INFO L87 Difference]: Start difference. First operand 54149 states and 60858 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 03:53:58,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:53:58,536 INFO L93 Difference]: Finished difference Result 108296 states and 121680 transitions. [2024-11-16 03:53:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:53:58,536 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 487 [2024-11-16 03:53:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:53:58,610 INFO L225 Difference]: With dead ends: 108296 [2024-11-16 03:53:58,610 INFO L226 Difference]: Without dead ends: 54901 [2024-11-16 03:53:58,645 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 03:53:58,646 INFO L432 NwaCegarLoop]: 1221 mSDtfsCounter, 697 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:53:58,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 1229 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 03:53:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54901 states. [2024-11-16 03:53:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54901 to 53397. [2024-11-16 03:53:59,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53397 states, 53396 states have (on average 1.1085849127275451) internal successors, (59194), 53396 states have internal predecessors, (59194), 0 states have call successors, (0), 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 03:53:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53397 states to 53397 states and 59194 transitions. [2024-11-16 03:53:59,515 INFO L78 Accepts]: Start accepts. Automaton has 53397 states and 59194 transitions. Word has length 487 [2024-11-16 03:53:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:53:59,515 INFO L471 AbstractCegarLoop]: Abstraction has 53397 states and 59194 transitions. [2024-11-16 03:53:59,516 INFO L472 AbstractCegarLoop]: INTERPOLANT 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) [2024-11-16 03:53:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 53397 states and 59194 transitions. [2024-11-16 03:53:59,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-16 03:53:59,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:53:59,527 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2024-11-16 03:53:59,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:53:59,528 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:53:59,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:53:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash 872858077, now seen corresponding path program 1 times [2024-11-16 03:53:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:53:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882196007] [2024-11-16 03:53:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:53:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:53:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-16 03:54:00,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:00,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882196007] [2024-11-16 03:54:00,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882196007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:00,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:00,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:00,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993070366] [2024-11-16 03:54:00,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:00,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:00,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:00,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:00,106 INFO L87 Difference]: Start difference. First operand 53397 states and 59194 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 03:54:02,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:02,764 INFO L93 Difference]: Finished difference Result 106040 states and 117629 transitions. [2024-11-16 03:54:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:02,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 488 [2024-11-16 03:54:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:02,831 INFO L225 Difference]: With dead ends: 106040 [2024-11-16 03:54:02,831 INFO L226 Difference]: Without dead ends: 53397 [2024-11-16 03:54:02,865 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 03:54:02,865 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 700 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:02,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 405 Invalid, 2688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 03:54:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53397 states. [2024-11-16 03:54:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53397 to 53397. [2024-11-16 03:54:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53397 states, 53396 states have (on average 1.072851899018653) internal successors, (57286), 53396 states have internal predecessors, (57286), 0 states have call successors, (0), 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 03:54:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53397 states to 53397 states and 57286 transitions. [2024-11-16 03:54:03,555 INFO L78 Accepts]: Start accepts. Automaton has 53397 states and 57286 transitions. Word has length 488 [2024-11-16 03:54:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:03,555 INFO L471 AbstractCegarLoop]: Abstraction has 53397 states and 57286 transitions. [2024-11-16 03:54:03,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 03:54:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 53397 states and 57286 transitions. [2024-11-16 03:54:03,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2024-11-16 03:54:03,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:03,565 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:54:03,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 03:54:03,566 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:03,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:03,566 INFO L85 PathProgramCache]: Analyzing trace with hash 631958894, now seen corresponding path program 1 times [2024-11-16 03:54:03,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:03,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894359894] [2024-11-16 03:54:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:03,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-16 03:54:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894359894] [2024-11-16 03:54:04,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894359894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:04,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:04,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203196713] [2024-11-16 03:54:04,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:04,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:04,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:04,399 INFO L87 Difference]: Start difference. First operand 53397 states and 57286 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 03:54:07,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:07,546 INFO L93 Difference]: Finished difference Result 143640 states and 154638 transitions. [2024-11-16 03:54:07,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:07,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 494 [2024-11-16 03:54:07,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:07,632 INFO L225 Difference]: With dead ends: 143640 [2024-11-16 03:54:07,632 INFO L226 Difference]: Without dead ends: 90997 [2024-11-16 03:54:07,662 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 03:54:07,662 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 690 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:07,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1324 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-16 03:54:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90997 states. [2024-11-16 03:54:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90997 to 87989. [2024-11-16 03:54:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87989 states, 87988 states have (on average 1.0607241896622266) internal successors, (93331), 87988 states have internal predecessors, (93331), 0 states have call successors, (0), 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 03:54:08,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87989 states to 87989 states and 93331 transitions. [2024-11-16 03:54:08,566 INFO L78 Accepts]: Start accepts. Automaton has 87989 states and 93331 transitions. Word has length 494 [2024-11-16 03:54:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:08,566 INFO L471 AbstractCegarLoop]: Abstraction has 87989 states and 93331 transitions. [2024-11-16 03:54:08,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 03:54:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 87989 states and 93331 transitions. [2024-11-16 03:54:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-16 03:54:08,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:08,579 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 03:54:08,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 03:54:08,579 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:08,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1299923893, now seen corresponding path program 1 times [2024-11-16 03:54:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:08,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978047934] [2024-11-16 03:54:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:08,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-16 03:54:09,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978047934] [2024-11-16 03:54:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978047934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:09,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:09,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:09,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845501764] [2024-11-16 03:54:09,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:09,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:09,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:09,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:09,354 INFO L87 Difference]: Start difference. First operand 87989 states and 93331 transitions. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 03:54:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:12,407 INFO L93 Difference]: Finished difference Result 197032 states and 210124 transitions. [2024-11-16 03:54:12,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:12,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 515 [2024-11-16 03:54:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:12,736 INFO L225 Difference]: With dead ends: 197032 [2024-11-16 03:54:12,736 INFO L226 Difference]: Without dead ends: 109797 [2024-11-16 03:54:12,765 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 03:54:12,765 INFO L432 NwaCegarLoop]: 1279 mSDtfsCounter, 564 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:12,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1289 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 03:54:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109797 states. [2024-11-16 03:54:13,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109797 to 106789. [2024-11-16 03:54:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106789 states, 106788 states have (on average 1.0558021500543133) internal successors, (112747), 106788 states have internal predecessors, (112747), 0 states have call successors, (0), 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 03:54:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106789 states to 106789 states and 112747 transitions. [2024-11-16 03:54:14,148 INFO L78 Accepts]: Start accepts. Automaton has 106789 states and 112747 transitions. Word has length 515 [2024-11-16 03:54:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:14,149 INFO L471 AbstractCegarLoop]: Abstraction has 106789 states and 112747 transitions. [2024-11-16 03:54:14,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 03:54:14,149 INFO L276 IsEmpty]: Start isEmpty. Operand 106789 states and 112747 transitions. [2024-11-16 03:54:14,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2024-11-16 03:54:14,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:14,166 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:54:14,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:54:14,167 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:14,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash -89585690, now seen corresponding path program 1 times [2024-11-16 03:54:14,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:14,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323380270] [2024-11-16 03:54:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 914 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-16 03:54:14,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:14,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323380270] [2024-11-16 03:54:14,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323380270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:14,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:54:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:54:14,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438839268] [2024-11-16 03:54:14,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:14,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:54:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:14,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:54:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:54:14,857 INFO L87 Difference]: Start difference. First operand 106789 states and 112747 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 03:54:18,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:54:18,255 INFO L93 Difference]: Finished difference Result 261704 states and 277369 transitions. [2024-11-16 03:54:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:54:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 567 [2024-11-16 03:54:18,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:54:18,425 INFO L225 Difference]: With dead ends: 261704 [2024-11-16 03:54:18,425 INFO L226 Difference]: Without dead ends: 155669 [2024-11-16 03:54:18,462 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 03:54:18,462 INFO L432 NwaCegarLoop]: 1209 mSDtfsCounter, 681 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:54:18,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1219 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-16 03:54:18,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155669 states. [2024-11-16 03:54:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155669 to 152661. [2024-11-16 03:54:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152661 states, 152660 states have (on average 1.0548670247609067) internal successors, (161036), 152660 states have internal predecessors, (161036), 0 states have call successors, (0), 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 03:54:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152661 states to 152661 states and 161036 transitions. [2024-11-16 03:54:20,371 INFO L78 Accepts]: Start accepts. Automaton has 152661 states and 161036 transitions. Word has length 567 [2024-11-16 03:54:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:54:20,371 INFO L471 AbstractCegarLoop]: Abstraction has 152661 states and 161036 transitions. [2024-11-16 03:54:20,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 03:54:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 152661 states and 161036 transitions. [2024-11-16 03:54:20,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2024-11-16 03:54:20,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:54:20,392 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:54:20,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 03:54:20,392 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:54:20,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:54:20,393 INFO L85 PathProgramCache]: Analyzing trace with hash -282745805, now seen corresponding path program 1 times [2024-11-16 03:54:20,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:54:20,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050089237] [2024-11-16 03:54:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:20,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:54:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 412 proven. 55 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-16 03:54:22,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:54:22,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050089237] [2024-11-16 03:54:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050089237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:54:22,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490264656] [2024-11-16 03:54:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:54:22,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:54:22,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:54:22,113 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 03:54:22,114 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 03:54:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:54:22,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:54:22,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:54:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2024-11-16 03:54:23,024 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:54:23,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490264656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:54:23,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:54:23,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-16 03:54:23,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953307314] [2024-11-16 03:54:23,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:54:23,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:54:23,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:54:23,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:54:23,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:54:23,026 INFO L87 Difference]: Start difference. First operand 152661 states and 161036 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)