./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label47.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label47.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 9caa4030530e2e9671468e08c95e91bac3f6959ea80b1f57c09b5d22d183ce56 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:34:48,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:34:48,187 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:34:48,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:34:48,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:34:48,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:34:48,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:34:48,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:34:48,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:34:48,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:34:48,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:34:48,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:34:48,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:34:48,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:34:48,232 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:34:48,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:34:48,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:34:48,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:34:48,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:34:48,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:34:48,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:34:48,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:34:48,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:34:48,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:34:48,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:34:48,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:34:48,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:34:48,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:34:48,241 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:34:48,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:34:48,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:34:48,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:34:48,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:34:48,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:34:48,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:34:48,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:34:48,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:34:48,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:34:48,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:34:48,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:34:48,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:34:48,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:34:48,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9caa4030530e2e9671468e08c95e91bac3f6959ea80b1f57c09b5d22d183ce56 [2024-11-09 19:34:48,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:34:48,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:34:48,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:34:48,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:34:48,545 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:34:48,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label47.c [2024-11-09 19:34:49,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:34:50,454 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:34:50,455 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label47.c [2024-11-09 19:34:50,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83900352f/a3ebcde5b4c94a62855f02a4f230b7e8/FLAG4ee6573d4 [2024-11-09 19:34:50,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83900352f/a3ebcde5b4c94a62855f02a4f230b7e8 [2024-11-09 19:34:50,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:34:50,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:34:50,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:34:50,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:34:50,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:34:50,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:34:50" (1/1) ... [2024-11-09 19:34:50,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e7cc20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:50, skipping insertion in model container [2024-11-09 19:34:50,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:34:50" (1/1) ... [2024-11-09 19:34:50,713 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:34:51,054 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label47.c[6189,6202] [2024-11-09 19:34:51,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:34:51,923 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:34:51,952 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label47.c[6189,6202] [2024-11-09 19:34:52,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:34:52,476 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:34:52,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52 WrapperNode [2024-11-09 19:34:52,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:34:52,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:34:52,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:34:52,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:34:52,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:52,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,102 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-09 19:34:53,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:34:53,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:34:53,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:34:53,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:34:53,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,442 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]. [2024-11-09 19:34:53,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,634 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:34:53,803 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:34:53,803 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:34:53,804 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:34:53,804 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (1/1) ... [2024-11-09 19:34:53,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:34:53,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:34:53,860 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) [2024-11-09 19:34:53,878 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 [2024-11-09 19:34:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:34:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:34:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:34:53,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:34:54,053 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:34:54,055 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:35:00,382 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-09 19:35:00,382 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:35:00,384 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:35:00,791 INFO L? ?]: Removed 2111 outVars from TransFormulas that were not future-live. [2024-11-09 19:35:00,791 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:35:00,834 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:35:00,835 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:35:00,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:35:00 BoogieIcfgContainer [2024-11-09 19:35:00,836 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:35:00,838 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:35:00,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:35:00,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:35:00,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:34:50" (1/3) ... [2024-11-09 19:35:00,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4cdca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:35:00, skipping insertion in model container [2024-11-09 19:35:00,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:52" (2/3) ... [2024-11-09 19:35:00,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4cdca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:35:00, skipping insertion in model container [2024-11-09 19:35:00,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:35:00" (3/3) ... [2024-11-09 19:35:00,845 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label47.c [2024-11-09 19:35:00,861 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:35:00,862 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:35:00,965 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:35:00,970 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;@71852417, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:35:00,971 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:35:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:00,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 19:35:00,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:00,989 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] [2024-11-09 19:35:00,990 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:00,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1245908574, now seen corresponding path program 1 times [2024-11-09 19:35:01,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:01,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596071983] [2024-11-09 19:35:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:01,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596071983] [2024-11-09 19:35:01,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596071983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:01,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:01,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:35:01,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810498279] [2024-11-09 19:35:01,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:01,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:01,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:01,409 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:06,507 INFO L93 Difference]: Finished difference Result 3041 states and 7797 transitions. [2024-11-09 19:35:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:06,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-11-09 19:35:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:06,537 INFO L225 Difference]: With dead ends: 3041 [2024-11-09 19:35:06,537 INFO L226 Difference]: Without dead ends: 1876 [2024-11-09 19:35:06,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:06,546 INFO L432 NwaCegarLoop]: 990 mSDtfsCounter, 1578 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:06,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 1146 Invalid, 4795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 19:35:06,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2024-11-09 19:35:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1862. [2024-11-09 19:35:06,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.3127350886620097) internal successors, (4304), 1861 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 4304 transitions. [2024-11-09 19:35:06,736 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 4304 transitions. Word has length 45 [2024-11-09 19:35:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:06,737 INFO L471 AbstractCegarLoop]: Abstraction has 1862 states and 4304 transitions. [2024-11-09 19:35:06,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 4304 transitions. [2024-11-09 19:35:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 19:35:06,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:06,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:06,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:35:06,741 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:06,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash 56292034, now seen corresponding path program 1 times [2024-11-09 19:35:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:06,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490500629] [2024-11-09 19:35:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:06,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:06,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:06,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490500629] [2024-11-09 19:35:06,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490500629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:06,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:06,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:35:06,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444295690] [2024-11-09 19:35:06,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:06,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:06,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:06,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:06,996 INFO L87 Difference]: Start difference. First operand 1862 states and 4304 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:10,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 19:35:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:16,244 INFO L93 Difference]: Finished difference Result 5413 states and 12708 transitions. [2024-11-09 19:35:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:16,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-11-09 19:35:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:16,259 INFO L225 Difference]: With dead ends: 5413 [2024-11-09 19:35:16,259 INFO L226 Difference]: Without dead ends: 3553 [2024-11-09 19:35:16,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:16,262 INFO L432 NwaCegarLoop]: 904 mSDtfsCounter, 1580 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4775 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 5217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 4775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:16,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1038 Invalid, 5217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 4775 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-09 19:35:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2024-11-09 19:35:16,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3481. [2024-11-09 19:35:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 3480 states have (on average 2.3123563218390806) internal successors, (8047), 3480 states have internal predecessors, (8047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 8047 transitions. [2024-11-09 19:35:16,327 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 8047 transitions. Word has length 118 [2024-11-09 19:35:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:16,327 INFO L471 AbstractCegarLoop]: Abstraction has 3481 states and 8047 transitions. [2024-11-09 19:35:16,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 8047 transitions. [2024-11-09 19:35:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-09 19:35:16,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:16,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:16,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:35:16,331 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:16,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:16,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1825580584, now seen corresponding path program 1 times [2024-11-09 19:35:16,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:16,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946052767] [2024-11-09 19:35:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:16,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:16,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946052767] [2024-11-09 19:35:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946052767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:16,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:35:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986748676] [2024-11-09 19:35:16,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:16,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:35:16,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:16,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:35:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:35:16,813 INFO L87 Difference]: Start difference. First operand 3481 states and 8047 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:23,346 INFO L93 Difference]: Finished difference Result 10932 states and 25367 transitions. [2024-11-09 19:35:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:35:23,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-11-09 19:35:23,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:23,385 INFO L225 Difference]: With dead ends: 10932 [2024-11-09 19:35:23,385 INFO L226 Difference]: Without dead ends: 7453 [2024-11-09 19:35:23,392 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 [2024-11-09 19:35:23,393 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 4739 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 6271 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 7187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 6271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:23,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4739 Valid, 1013 Invalid, 7187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 6271 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-09 19:35:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7453 states. [2024-11-09 19:35:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7453 to 7452. [2024-11-09 19:35:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 7451 states have (on average 2.2065494564487986) internal successors, (16441), 7451 states have internal predecessors, (16441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 16441 transitions. [2024-11-09 19:35:23,580 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 16441 transitions. Word has length 132 [2024-11-09 19:35:23,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:23,580 INFO L471 AbstractCegarLoop]: Abstraction has 7452 states and 16441 transitions. [2024-11-09 19:35:23,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 16441 transitions. [2024-11-09 19:35:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-09 19:35:23,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:23,592 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, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:35:23,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:35:23,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:23,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:23,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1518331793, now seen corresponding path program 1 times [2024-11-09 19:35:23,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:23,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734663851] [2024-11-09 19:35:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:23,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:35:23,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734663851] [2024-11-09 19:35:23,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734663851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:23,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:23,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:35:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654081208] [2024-11-09 19:35:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:23,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:23,918 INFO L87 Difference]: Start difference. First operand 7452 states and 16441 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:28,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:28,852 INFO L93 Difference]: Finished difference Result 20451 states and 45871 transitions. [2024-11-09 19:35:28,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:28,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 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 214 [2024-11-09 19:35:28,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:28,888 INFO L225 Difference]: With dead ends: 20451 [2024-11-09 19:35:28,889 INFO L226 Difference]: Without dead ends: 13789 [2024-11-09 19:35:28,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:28,898 INFO L432 NwaCegarLoop]: 835 mSDtfsCounter, 1623 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4001 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 4752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 4001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:28,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 969 Invalid, 4752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 4001 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-09 19:35:28,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13789 states. [2024-11-09 19:35:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13789 to 13779. [2024-11-09 19:35:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13778 states have (on average 2.149876614893308) internal successors, (29621), 13778 states have internal predecessors, (29621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 29621 transitions. [2024-11-09 19:35:29,141 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 29621 transitions. Word has length 214 [2024-11-09 19:35:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:29,141 INFO L471 AbstractCegarLoop]: Abstraction has 13779 states and 29621 transitions. [2024-11-09 19:35:29,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 29621 transitions. [2024-11-09 19:35:29,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 19:35:29,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:29,145 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:29,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:35:29,146 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:29,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash -441296643, now seen corresponding path program 1 times [2024-11-09 19:35:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:29,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336397640] [2024-11-09 19:35:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:29,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336397640] [2024-11-09 19:35:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336397640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:29,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:35:29,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414628088] [2024-11-09 19:35:29,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:29,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:35:29,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:29,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:35:29,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:35:29,424 INFO L87 Difference]: Start difference. First operand 13779 states and 29621 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:37,006 INFO L93 Difference]: Finished difference Result 39594 states and 86211 transitions. [2024-11-09 19:35:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:35:37,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2024-11-09 19:35:37,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:37,069 INFO L225 Difference]: With dead ends: 39594 [2024-11-09 19:35:37,069 INFO L226 Difference]: Without dead ends: 26605 [2024-11-09 19:35:37,083 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 [2024-11-09 19:35:37,084 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 3202 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 8706 mSolverCounterSat, 1290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 9996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1290 IncrementalHoareTripleChecker+Valid, 8706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:37,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3202 Valid, 650 Invalid, 9996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1290 Valid, 8706 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-09 19:35:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2024-11-09 19:35:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 26487. [2024-11-09 19:35:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26487 states, 26486 states have (on average 2.144982254776108) internal successors, (56812), 26486 states have internal predecessors, (56812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26487 states to 26487 states and 56812 transitions. [2024-11-09 19:35:37,478 INFO L78 Accepts]: Start accepts. Automaton has 26487 states and 56812 transitions. Word has length 228 [2024-11-09 19:35:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:37,478 INFO L471 AbstractCegarLoop]: Abstraction has 26487 states and 56812 transitions. [2024-11-09 19:35:37,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 26487 states and 56812 transitions. [2024-11-09 19:35:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-09 19:35:37,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:37,485 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:37,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:35:37,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:37,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash 519191261, now seen corresponding path program 1 times [2024-11-09 19:35:37,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:37,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717192549] [2024-11-09 19:35:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:37,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:37,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717192549] [2024-11-09 19:35:37,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717192549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:37,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:37,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:35:37,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208722813] [2024-11-09 19:35:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:37,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:37,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:37,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:37,701 INFO L87 Difference]: Start difference. First operand 26487 states and 56812 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:41,852 INFO L93 Difference]: Finished difference Result 52165 states and 112095 transitions. [2024-11-09 19:35:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 286 [2024-11-09 19:35:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:41,917 INFO L225 Difference]: With dead ends: 52165 [2024-11-09 19:35:41,918 INFO L226 Difference]: Without dead ends: 26468 [2024-11-09 19:35:41,940 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 [2024-11-09 19:35:41,941 INFO L432 NwaCegarLoop]: 2241 mSDtfsCounter, 1732 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 4382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:41,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 2385 Invalid, 4382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:35:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26468 states. [2024-11-09 19:35:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26468 to 26461. [2024-11-09 19:35:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26461 states, 26460 states have (on average 2.066893424036281) internal successors, (54690), 26460 states have internal predecessors, (54690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26461 states to 26461 states and 54690 transitions. [2024-11-09 19:35:42,294 INFO L78 Accepts]: Start accepts. Automaton has 26461 states and 54690 transitions. Word has length 286 [2024-11-09 19:35:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:42,296 INFO L471 AbstractCegarLoop]: Abstraction has 26461 states and 54690 transitions. [2024-11-09 19:35:42,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:42,297 INFO L276 IsEmpty]: Start isEmpty. Operand 26461 states and 54690 transitions. [2024-11-09 19:35:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-09 19:35:42,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:42,307 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:42,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:35:42,308 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:42,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:42,308 INFO L85 PathProgramCache]: Analyzing trace with hash -104218087, now seen corresponding path program 1 times [2024-11-09 19:35:42,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:42,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144770865] [2024-11-09 19:35:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:42,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-09 19:35:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:42,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144770865] [2024-11-09 19:35:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144770865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:42,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:42,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:35:42,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29491085] [2024-11-09 19:35:42,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:42,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:42,694 INFO L87 Difference]: Start difference. First operand 26461 states and 54690 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:47,389 INFO L93 Difference]: Finished difference Result 76554 states and 158897 transitions. [2024-11-09 19:35:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:47,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 289 [2024-11-09 19:35:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:47,466 INFO L225 Difference]: With dead ends: 76554 [2024-11-09 19:35:47,466 INFO L226 Difference]: Without dead ends: 50883 [2024-11-09 19:35:47,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:47,497 INFO L432 NwaCegarLoop]: 979 mSDtfsCounter, 1543 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3835 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 4698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 3835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:47,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1116 Invalid, 4698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 3835 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 19:35:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50883 states. [2024-11-09 19:35:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50883 to 46145. [2024-11-09 19:35:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46145 states, 46144 states have (on average 2.0283027045769764) internal successors, (93594), 46144 states have internal predecessors, (93594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46145 states to 46145 states and 93594 transitions. [2024-11-09 19:35:48,080 INFO L78 Accepts]: Start accepts. Automaton has 46145 states and 93594 transitions. Word has length 289 [2024-11-09 19:35:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:48,083 INFO L471 AbstractCegarLoop]: Abstraction has 46145 states and 93594 transitions. [2024-11-09 19:35:48,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 46145 states and 93594 transitions. [2024-11-09 19:35:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-11-09 19:35:48,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:48,090 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, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:35:48,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:35:48,091 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:48,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:48,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1841802267, now seen corresponding path program 1 times [2024-11-09 19:35:48,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:48,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745605081] [2024-11-09 19:35:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:48,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 19:35:48,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745605081] [2024-11-09 19:35:48,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745605081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:48,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:48,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:35:48,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024087860] [2024-11-09 19:35:48,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:48,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:48,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:48,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:48,453 INFO L87 Difference]: Start difference. First operand 46145 states and 93594 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:53,769 INFO L93 Difference]: Finished difference Result 112785 states and 230389 transitions. [2024-11-09 19:35:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 346 [2024-11-09 19:35:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:53,866 INFO L225 Difference]: With dead ends: 112785 [2024-11-09 19:35:53,866 INFO L226 Difference]: Without dead ends: 67430 [2024-11-09 19:35:53,890 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 [2024-11-09 19:35:53,890 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 1498 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 3867 mSolverCounterSat, 865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 4732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 865 IncrementalHoareTripleChecker+Valid, 3867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:53,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1046 Invalid, 4732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [865 Valid, 3867 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 19:35:53,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67430 states. [2024-11-09 19:35:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67430 to 65055. [2024-11-09 19:35:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65055 states, 65054 states have (on average 2.0222738033018723) internal successors, (131557), 65054 states have internal predecessors, (131557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65055 states to 65055 states and 131557 transitions. [2024-11-09 19:35:55,071 INFO L78 Accepts]: Start accepts. Automaton has 65055 states and 131557 transitions. Word has length 346 [2024-11-09 19:35:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:55,075 INFO L471 AbstractCegarLoop]: Abstraction has 65055 states and 131557 transitions. [2024-11-09 19:35:55,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:35:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 65055 states and 131557 transitions. [2024-11-09 19:35:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-09 19:35:55,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:55,096 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:55,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:35:55,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:55,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash 846171122, now seen corresponding path program 1 times [2024-11-09 19:35:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215978510] [2024-11-09 19:35:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 362 proven. 26 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 19:35:56,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:56,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215978510] [2024-11-09 19:35:56,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215978510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:35:56,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899184763] [2024-11-09 19:35:56,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:56,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:35:56,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:35:56,192 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) [2024-11-09 19:35:56,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:35:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:56,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:35:56,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:35:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-09 19:35:56,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:35:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899184763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:35:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:35:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966261312] [2024-11-09 19:35:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:56,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:56,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:35:56,516 INFO L87 Difference]: Start difference. First operand 65055 states and 131557 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:36:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:36:00,961 INFO L93 Difference]: Finished difference Result 143495 states and 289999 transitions. [2024-11-09 19:36:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:36:00,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 374 [2024-11-09 19:36:00,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:36:01,074 INFO L225 Difference]: With dead ends: 143495 [2024-11-09 19:36:01,074 INFO L226 Difference]: Without dead ends: 79230 [2024-11-09 19:36:01,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:36:01,098 INFO L432 NwaCegarLoop]: 2464 mSDtfsCounter, 1570 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3825 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 4287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 3825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:36:01,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 2595 Invalid, 4287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 3825 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:36:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79230 states. [2024-11-09 19:36:02,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79230 to 70554. [2024-11-09 19:36:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70554 states, 70553 states have (on average 2.017377007356172) internal successors, (142332), 70553 states have internal predecessors, (142332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:36:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70554 states to 70554 states and 142332 transitions. [2024-11-09 19:36:02,420 INFO L78 Accepts]: Start accepts. Automaton has 70554 states and 142332 transitions. Word has length 374 [2024-11-09 19:36:02,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:36:02,420 INFO L471 AbstractCegarLoop]: Abstraction has 70554 states and 142332 transitions. [2024-11-09 19:36:02,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:36:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 70554 states and 142332 transitions. [2024-11-09 19:36:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-09 19:36:02,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:36:02,450 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:36:02,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:36:02,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:36:02,652 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:36:02,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:36:02,652 INFO L85 PathProgramCache]: Analyzing trace with hash 600352217, now seen corresponding path program 1 times [2024-11-09 19:36:02,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:36:02,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413598105] [2024-11-09 19:36:02,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:36:02,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:36:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:36:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 364 proven. 26 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 19:36:03,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:36:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413598105] [2024-11-09 19:36:03,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413598105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:36:03,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479098669] [2024-11-09 19:36:03,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:36:03,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:36:03,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:36:03,927 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) [2024-11-09 19:36:03,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:36:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:36:04,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:36:04,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:36:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 19:36:04,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:36:04,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479098669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:36:04,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:36:04,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:36:04,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582564667] [2024-11-09 19:36:04,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:36:04,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:36:04,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:36:04,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:36:04,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:36:04,464 INFO L87 Difference]: Start difference. First operand 70554 states and 142332 transitions. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)