./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label24.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_label24.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 5b1376b91fc4972ce6c7d65475312883937dd65d9e0386ea92accc3cc98d9312 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:32:45,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:32:45,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:32:45,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:32:45,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:32:45,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:32:45,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:32:45,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:32:45,442 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:32:45,443 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:32:45,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:32:45,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:32:45,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:32:45,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:32:45,446 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:32:45,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:32:45,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:32:45,449 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:32:45,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:32:45,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:32:45,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:32:45,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:32:45,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:32:45,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:32:45,454 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:32:45,454 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:32:45,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:32:45,455 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:32:45,455 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:32:45,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:32:45,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:32:45,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:32:45,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:32:45,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:32:45,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:32:45,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:32:45,457 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:32:45,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:32:45,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:32:45,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:32:45,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:32:45,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:32:45,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b1376b91fc4972ce6c7d65475312883937dd65d9e0386ea92accc3cc98d9312 [2024-11-09 19:32:45,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:32:45,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:32:45,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:32:45,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:32:45,758 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:32:45,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label24.c [2024-11-09 19:32:47,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:32:47,815 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:32:47,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label24.c [2024-11-09 19:32:47,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb43852e5/1a13ff13b1d04d74924d23205af29629/FLAG2ba6c09a0 [2024-11-09 19:32:47,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb43852e5/1a13ff13b1d04d74924d23205af29629 [2024-11-09 19:32:47,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:32:47,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:32:47,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:32:47,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:32:47,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:32:47,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:32:47" (1/1) ... [2024-11-09 19:32:47,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34090724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:47, skipping insertion in model container [2024-11-09 19:32:47,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:32:47" (1/1) ... [2024-11-09 19:32:48,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:32:48,287 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_label24.c[4341,4354] [2024-11-09 19:32:49,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:32:49,197 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:32:49,220 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_label24.c[4341,4354] [2024-11-09 19:32:49,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:32:49,738 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:32:49,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49 WrapperNode [2024-11-09 19:32:49,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:32:49,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:32:49,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:32:49,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:32:49,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:49,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:50,466 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-09 19:32:50,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:32:50,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:32:50,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:32:50,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:32:50,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:50,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:50,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:51,004 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 19:32:51,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:51,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:51,230 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:51,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:51,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:51,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:51,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:32:51,474 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:32:51,475 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:32:51,475 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:32:51,476 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (1/1) ... [2024-11-09 19:32:51,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:32:51,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:32:51,512 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 19:32:51,519 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 19:32:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:32:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:32:51,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:32:51,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:32:51,646 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:32:51,649 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:32:58,139 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-09 19:32:58,140 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:32:58,141 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:32:58,463 INFO L? ?]: Removed 2111 outVars from TransFormulas that were not future-live. [2024-11-09 19:32:58,463 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:32:58,517 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:32:58,518 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:32:58,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:32:58 BoogieIcfgContainer [2024-11-09 19:32:58,519 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:32:58,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:32:58,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:32:58,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:32:58,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:32:47" (1/3) ... [2024-11-09 19:32:58,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7128ebdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:32:58, skipping insertion in model container [2024-11-09 19:32:58,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:32:49" (2/3) ... [2024-11-09 19:32:58,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7128ebdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:32:58, skipping insertion in model container [2024-11-09 19:32:58,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:32:58" (3/3) ... [2024-11-09 19:32:58,530 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label24.c [2024-11-09 19:32:58,546 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:32:58,547 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:32:58,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:32:58,669 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;@517be007, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:32:58,670 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:32:58,679 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 19:32:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 19:32:58,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:32:58,686 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] [2024-11-09 19:32:58,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:32:58,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:32:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1491929001, now seen corresponding path program 1 times [2024-11-09 19:32:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:32:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409408787] [2024-11-09 19:32:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:32:58,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:32:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:32:59,076 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 19:32:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:32:59,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409408787] [2024-11-09 19:32:59,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409408787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:32:59,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:32:59,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:32:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966710919] [2024-11-09 19:32:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:32:59,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:32:59,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:32:59,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:32:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:32:59,117 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 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 19:33:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:04,991 INFO L93 Difference]: Finished difference Result 3088 states and 7843 transitions. [2024-11-09 19:33:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:04,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-11-09 19:33:04,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:05,020 INFO L225 Difference]: With dead ends: 3088 [2024-11-09 19:33:05,020 INFO L226 Difference]: Without dead ends: 1902 [2024-11-09 19:33:05,026 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 19:33:05,030 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 1726 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:05,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 642 Invalid, 4986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-09 19:33:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2024-11-09 19:33:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1897. [2024-11-09 19:33:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1897 states, 1896 states have (on average 2.4915611814345993) internal successors, (4724), 1896 states have internal predecessors, (4724), 0 states have call successors, (0), 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 19:33:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 4724 transitions. [2024-11-09 19:33:05,178 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 4724 transitions. Word has length 31 [2024-11-09 19:33:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:05,179 INFO L471 AbstractCegarLoop]: Abstraction has 1897 states and 4724 transitions. [2024-11-09 19:33:05,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 19:33:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 4724 transitions. [2024-11-09 19:33:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 19:33:05,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:05,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:05,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:33:05,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:05,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:05,184 INFO L85 PathProgramCache]: Analyzing trace with hash 991293762, now seen corresponding path program 1 times [2024-11-09 19:33:05,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:05,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838789387] [2024-11-09 19:33:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:05,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:05,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838789387] [2024-11-09 19:33:05,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838789387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:05,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:05,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:33:05,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349266282] [2024-11-09 19:33:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:05,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:33:05,668 INFO L87 Difference]: Start difference. First operand 1897 states and 4724 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:33:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:11,003 INFO L93 Difference]: Finished difference Result 5448 states and 13872 transitions. [2024-11-09 19:33:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-09 19:33:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:11,023 INFO L225 Difference]: With dead ends: 5448 [2024-11-09 19:33:11,023 INFO L226 Difference]: Without dead ends: 3553 [2024-11-09 19:33:11,028 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 19:33:11,031 INFO L432 NwaCegarLoop]: 749 mSDtfsCounter, 1534 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4560 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 4560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:11,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 887 Invalid, 4920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 4560 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-09 19:33:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2024-11-09 19:33:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3489. [2024-11-09 19:33:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3489 states, 3488 states have (on average 2.407110091743119) internal successors, (8396), 3488 states have internal predecessors, (8396), 0 states have call successors, (0), 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 19:33:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 8396 transitions. [2024-11-09 19:33:11,116 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 8396 transitions. Word has length 97 [2024-11-09 19:33:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:11,118 INFO L471 AbstractCegarLoop]: Abstraction has 3489 states and 8396 transitions. [2024-11-09 19:33:11,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:33:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 8396 transitions. [2024-11-09 19:33:11,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 19:33:11,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:11,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:11,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:33:11,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:11,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash 930360866, now seen corresponding path program 1 times [2024-11-09 19:33:11,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:11,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631491595] [2024-11-09 19:33:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:11,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:11,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:11,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631491595] [2024-11-09 19:33:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631491595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:11,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:11,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:33:11,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427979698] [2024-11-09 19:33:11,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:11,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:11,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:11,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:11,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:33:11,358 INFO L87 Difference]: Start difference. First operand 3489 states and 8396 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 19:33:16,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:16,119 INFO L93 Difference]: Finished difference Result 10164 states and 24770 transitions. [2024-11-09 19:33:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:16,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2024-11-09 19:33:16,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:16,150 INFO L225 Difference]: With dead ends: 10164 [2024-11-09 19:33:16,151 INFO L226 Difference]: Without dead ends: 6677 [2024-11-09 19:33:16,158 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 19:33:16,160 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 1516 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 3943 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 4723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 3943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:16,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1207 Invalid, 4723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 3943 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-09 19:33:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6677 states. [2024-11-09 19:33:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6677 to 6661. [2024-11-09 19:33:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 6660 states have (on average 2.2372372372372373) internal successors, (14900), 6660 states have internal predecessors, (14900), 0 states have call successors, (0), 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 19:33:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 14900 transitions. [2024-11-09 19:33:16,313 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 14900 transitions. Word has length 98 [2024-11-09 19:33:16,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:16,317 INFO L471 AbstractCegarLoop]: Abstraction has 6661 states and 14900 transitions. [2024-11-09 19:33:16,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 19:33:16,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 14900 transitions. [2024-11-09 19:33:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 19:33:16,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:16,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:16,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:33:16,320 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:16,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash -741630500, now seen corresponding path program 1 times [2024-11-09 19:33:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093167072] [2024-11-09 19:33:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:16,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:16,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093167072] [2024-11-09 19:33:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093167072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:33:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790990943] [2024-11-09 19:33:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:16,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:33:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:33:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:33:16,671 INFO L87 Difference]: Start difference. First operand 6661 states and 14900 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 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 19:33:24,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:24,214 INFO L93 Difference]: Finished difference Result 14110 states and 32128 transitions. [2024-11-09 19:33:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:33:24,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 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 19:33:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:24,240 INFO L225 Difference]: With dead ends: 14110 [2024-11-09 19:33:24,241 INFO L226 Difference]: Without dead ends: 7451 [2024-11-09 19:33:24,248 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 19:33:24,250 INFO L432 NwaCegarLoop]: 735 mSDtfsCounter, 4729 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6299 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4729 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 7140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 6299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:24,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4729 Valid, 1032 Invalid, 7140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 6299 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-09 19:33:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2024-11-09 19:33:24,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 7450. [2024-11-09 19:33:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7450 states, 7449 states have (on average 2.2098268223922672) internal successors, (16461), 7449 states have internal predecessors, (16461), 0 states have call successors, (0), 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 19:33:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7450 states to 7450 states and 16461 transitions. [2024-11-09 19:33:24,428 INFO L78 Accepts]: Start accepts. Automaton has 7450 states and 16461 transitions. Word has length 118 [2024-11-09 19:33:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:24,429 INFO L471 AbstractCegarLoop]: Abstraction has 7450 states and 16461 transitions. [2024-11-09 19:33:24,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 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 19:33:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7450 states and 16461 transitions. [2024-11-09 19:33:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-09 19:33:24,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:24,433 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:33:24,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:33:24,433 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:24,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1713703510, now seen corresponding path program 1 times [2024-11-09 19:33:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912740616] [2024-11-09 19:33:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:24,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:24,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:24,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912740616] [2024-11-09 19:33:24,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912740616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:24,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:24,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:33:24,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804601528] [2024-11-09 19:33:24,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:24,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:24,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:24,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:33:24,776 INFO L87 Difference]: Start difference. First operand 7450 states and 16461 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:33:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:28,951 INFO L93 Difference]: Finished difference Result 17278 states and 39418 transitions. [2024-11-09 19:33:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-11-09 19:33:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:28,979 INFO L225 Difference]: With dead ends: 17278 [2024-11-09 19:33:28,980 INFO L226 Difference]: Without dead ends: 10618 [2024-11-09 19:33:28,987 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 19:33:28,988 INFO L432 NwaCegarLoop]: 797 mSDtfsCounter, 1620 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 4738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:28,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 916 Invalid, 4738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 3809 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 19:33:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2024-11-09 19:33:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 10610. [2024-11-09 19:33:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10610 states, 10609 states have (on average 2.20162126496371) internal successors, (23357), 10609 states have internal predecessors, (23357), 0 states have call successors, (0), 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 19:33:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10610 states to 10610 states and 23357 transitions. [2024-11-09 19:33:29,167 INFO L78 Accepts]: Start accepts. Automaton has 10610 states and 23357 transitions. Word has length 196 [2024-11-09 19:33:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:29,168 INFO L471 AbstractCegarLoop]: Abstraction has 10610 states and 23357 transitions. [2024-11-09 19:33:29,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:33:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 10610 states and 23357 transitions. [2024-11-09 19:33:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-09 19:33:29,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:29,171 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:33:29,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:33:29,172 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:29,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2056750564, now seen corresponding path program 1 times [2024-11-09 19:33:29,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:29,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163632225] [2024-11-09 19:33:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:33:29,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163632225] [2024-11-09 19:33:29,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163632225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:29,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:29,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:33:29,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943345490] [2024-11-09 19:33:29,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:29,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:29,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:29,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:33:29,347 INFO L87 Difference]: Start difference. First operand 10610 states and 23357 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 19:33:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:33,782 INFO L93 Difference]: Finished difference Result 29135 states and 65043 transitions. [2024-11-09 19:33:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 200 [2024-11-09 19:33:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:33,825 INFO L225 Difference]: With dead ends: 29135 [2024-11-09 19:33:33,826 INFO L226 Difference]: Without dead ends: 19315 [2024-11-09 19:33:33,835 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 19:33:33,836 INFO L432 NwaCegarLoop]: 708 mSDtfsCounter, 1663 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 4729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:33,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 840 Invalid, 4729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:33:33,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19315 states. [2024-11-09 19:33:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19315 to 19306. [2024-11-09 19:33:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19306 states, 19305 states have (on average 2.136907536907537) internal successors, (41253), 19305 states have internal predecessors, (41253), 0 states have call successors, (0), 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 19:33:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19306 states to 19306 states and 41253 transitions. [2024-11-09 19:33:34,099 INFO L78 Accepts]: Start accepts. Automaton has 19306 states and 41253 transitions. Word has length 200 [2024-11-09 19:33:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:34,100 INFO L471 AbstractCegarLoop]: Abstraction has 19306 states and 41253 transitions. [2024-11-09 19:33:34,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 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 19:33:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 19306 states and 41253 transitions. [2024-11-09 19:33:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-09 19:33:34,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:34,105 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:33:34,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:33:34,106 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:34,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:34,107 INFO L85 PathProgramCache]: Analyzing trace with hash -957829719, now seen corresponding path program 1 times [2024-11-09 19:33:34,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:34,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503953902] [2024-11-09 19:33:34,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:34,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:34,358 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:34,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503953902] [2024-11-09 19:33:34,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503953902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:34,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:34,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:33:34,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181912490] [2024-11-09 19:33:34,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:34,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:33:34,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:34,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:33:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:33:34,361 INFO L87 Difference]: Start difference. First operand 19306 states and 41253 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 19:33:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:42,118 INFO L93 Difference]: Finished difference Result 66380 states and 143580 transitions. [2024-11-09 19:33:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:33:42,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2024-11-09 19:33:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:42,206 INFO L225 Difference]: With dead ends: 66380 [2024-11-09 19:33:42,207 INFO L226 Difference]: Without dead ends: 47864 [2024-11-09 19:33:42,231 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 19:33:42,233 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 3070 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8640 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3070 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 9358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 8640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:42,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3070 Valid, 1100 Invalid, 9358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 8640 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-09 19:33:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47864 states. [2024-11-09 19:33:42,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47864 to 47713. [2024-11-09 19:33:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47713 states, 47712 states have (on average 2.1132838698859824) internal successors, (100829), 47712 states have internal predecessors, (100829), 0 states have call successors, (0), 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 19:33:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47713 states to 47713 states and 100829 transitions. [2024-11-09 19:33:43,117 INFO L78 Accepts]: Start accepts. Automaton has 47713 states and 100829 transitions. Word has length 230 [2024-11-09 19:33:43,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:43,117 INFO L471 AbstractCegarLoop]: Abstraction has 47713 states and 100829 transitions. [2024-11-09 19:33:43,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 19:33:43,118 INFO L276 IsEmpty]: Start isEmpty. Operand 47713 states and 100829 transitions. [2024-11-09 19:33:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-09 19:33:43,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:43,122 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:33:43,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:33:43,123 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:43,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1467114831, now seen corresponding path program 1 times [2024-11-09 19:33:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010745741] [2024-11-09 19:33:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 125 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:43,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010745741] [2024-11-09 19:33:43,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010745741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:33:43,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239971915] [2024-11-09 19:33:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:43,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:33:43,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:33:43,787 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 19:33:43,789 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 19:33:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:43,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:33:43,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:33:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:44,379 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:33:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239971915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:44,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:33:44,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:33:44,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42247666] [2024-11-09 19:33:44,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:44,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:44,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:44,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:44,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:33:44,385 INFO L87 Difference]: Start difference. First operand 47713 states and 100829 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 19:33:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:50,087 INFO L93 Difference]: Finished difference Result 115900 states and 247918 transitions. [2024-11-09 19:33:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:50,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 245 [2024-11-09 19:33:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:50,222 INFO L225 Difference]: With dead ends: 115900 [2024-11-09 19:33:50,223 INFO L226 Difference]: Without dead ends: 76870 [2024-11-09 19:33:50,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:33:50,258 INFO L432 NwaCegarLoop]: 966 mSDtfsCounter, 1459 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 3894 mSolverCounterSat, 765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 4659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 3894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:50,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 1141 Invalid, 4659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 3894 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-09 19:33:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76870 states. [2024-11-09 19:33:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76870 to 76868. [2024-11-09 19:33:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76868 states, 76867 states have (on average 2.054952060051778) internal successors, (157958), 76867 states have internal predecessors, (157958), 0 states have call successors, (0), 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 19:33:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76868 states to 76868 states and 157958 transitions. [2024-11-09 19:33:51,940 INFO L78 Accepts]: Start accepts. Automaton has 76868 states and 157958 transitions. Word has length 245 [2024-11-09 19:33:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:51,941 INFO L471 AbstractCegarLoop]: Abstraction has 76868 states and 157958 transitions. [2024-11-09 19:33:51,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 19:33:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 76868 states and 157958 transitions. [2024-11-09 19:33:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-11-09 19:33:51,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:51,945 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:33:51,965 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 19:33:52,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:33:52,146 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:52,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1394051696, now seen corresponding path program 1 times [2024-11-09 19:33:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210474720] [2024-11-09 19:33:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 19:33:52,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:52,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210474720] [2024-11-09 19:33:52,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210474720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:52,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:52,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:33:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586926732] [2024-11-09 19:33:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:52,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:33:52,550 INFO L87 Difference]: Start difference. First operand 76868 states and 157958 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 19:33:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:57,874 INFO L93 Difference]: Finished difference Result 199430 states and 411548 transitions. [2024-11-09 19:33:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2024-11-09 19:33:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:58,106 INFO L225 Difference]: With dead ends: 199430 [2024-11-09 19:33:58,106 INFO L226 Difference]: Without dead ends: 123352 [2024-11-09 19:33:58,313 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 19:33:58,316 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 1569 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 3746 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 4614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 3746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:58,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 997 Invalid, 4614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 3746 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 19:33:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123352 states. [2024-11-09 19:34:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123352 to 106798. [2024-11-09 19:34:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106798 states, 106797 states have (on average 2.030899744374842) internal successors, (216894), 106797 states have internal predecessors, (216894), 0 states have call successors, (0), 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 19:34:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106798 states to 106798 states and 216894 transitions. [2024-11-09 19:34:00,386 INFO L78 Accepts]: Start accepts. Automaton has 106798 states and 216894 transitions. Word has length 263 [2024-11-09 19:34:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:34:00,386 INFO L471 AbstractCegarLoop]: Abstraction has 106798 states and 216894 transitions. [2024-11-09 19:34:00,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 19:34:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 106798 states and 216894 transitions. [2024-11-09 19:34:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-09 19:34:00,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:34:00,388 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:34:00,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:34:00,388 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:34:00,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:34:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash -9445841, now seen corresponding path program 1 times [2024-11-09 19:34:00,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:34:00,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623651852] [2024-11-09 19:34:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:34:00,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:34:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:34:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 58 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:34:01,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:34:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623651852] [2024-11-09 19:34:01,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623651852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:34:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949676540] [2024-11-09 19:34:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:34:01,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:34:01,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:34:01,539 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 19:34:01,540 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 19:34:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:34:01,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:34:01,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:34:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-09 19:34:01,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:34:01,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949676540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:34:01,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:34:01,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:34:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631140187] [2024-11-09 19:34:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:34:01,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:34:01,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:34:01,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:34:01,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:34:01,768 INFO L87 Difference]: Start difference. First operand 106798 states and 216894 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)