./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i -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 6426d30449276f41292d944281f990de88775c0c256461a4ce5af87d5d4d093f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:31:51,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:31:51,399 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:31:51,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:31:51,407 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:31:51,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:31:51,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:31:51,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:31:51,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:31:51,440 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:31:51,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:31:51,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:31:51,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:31:51,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:31:51,445 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:31:51,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:31:51,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:31:51,446 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:31:51,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:31:51,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:31:51,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:31:51,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:31:51,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:31:51,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:31:51,449 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:31:51,450 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:31:51,450 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:31:51,450 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:31:51,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:31:51,451 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:31:51,451 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:31:51,451 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:31:51,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:31:51,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:31:51,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:31:51,452 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:31:51,453 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:31:51,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:31:51,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:31:51,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:31:51,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:31:51,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:31:51,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6426d30449276f41292d944281f990de88775c0c256461a4ce5af87d5d4d093f [2024-11-19 00:31:51,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:31:51,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:31:51,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:31:51,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:31:51,778 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:31:51,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2024-11-19 00:31:53,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:31:53,341 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:31:53,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2024-11-19 00:31:53,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337d3473b/a7dbecb54c274f9abd1ce76441f98c9a/FLAG1cd0794ea [2024-11-19 00:31:53,378 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337d3473b/a7dbecb54c274f9abd1ce76441f98c9a [2024-11-19 00:31:53,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:31:53,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:31:53,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:31:53,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:31:53,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:31:53,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4549b798 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53, skipping insertion in model container [2024-11-19 00:31:53,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,424 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:31:53,597 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i[916,929] [2024-11-19 00:31:53,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:31:53,675 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:31:53,688 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i[916,929] [2024-11-19 00:31:53,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:31:53,749 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:31:53,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53 WrapperNode [2024-11-19 00:31:53,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:31:53,751 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:31:53,751 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:31:53,751 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:31:53,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,822 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 447 [2024-11-19 00:31:53,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:31:53,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:31:53,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:31:53,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:31:53,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,878 INFO L175 MemorySlicer]: Split 123 memory accesses to 4 slices as follows [2, 38, 12, 71]. 58 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 2, 4]. The 14 writes are split as follows [0, 8, 2, 4]. [2024-11-19 00:31:53,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,882 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:31:53,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:31:53,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:31:53,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:31:53,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (1/1) ... [2024-11-19 00:31:53,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:31:53,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:31:53,982 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) [2024-11-19 00:31:53,984 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 [2024-11-19 00:31:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:31:54,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 00:31:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 00:31:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 00:31:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 00:31:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 00:31:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 00:31:54,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 00:31:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 00:31:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:31:54,020 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:31:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:31:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 00:31:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 00:31:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 00:31:54,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:31:54,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:31:54,135 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:31:54,137 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:31:54,641 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-19 00:31:54,642 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:31:54,659 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:31:54,659 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:31:54,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:31:54 BoogieIcfgContainer [2024-11-19 00:31:54,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:31:54,663 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:31:54,663 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:31:54,666 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:31:54,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:31:53" (1/3) ... [2024-11-19 00:31:54,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f8d86f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:31:54, skipping insertion in model container [2024-11-19 00:31:54,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:31:53" (2/3) ... [2024-11-19 00:31:54,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f8d86f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:31:54, skipping insertion in model container [2024-11-19 00:31:54,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:31:54" (3/3) ... [2024-11-19 00:31:54,670 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-12.i [2024-11-19 00:31:54,685 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:31:54,686 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:31:54,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:31:54,750 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;@5703201b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:31:54,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:31:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:31:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 00:31:54,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:31:54,764 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:31:54,764 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:31:54,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:31:54,768 INFO L85 PathProgramCache]: Analyzing trace with hash -571948604, now seen corresponding path program 1 times [2024-11-19 00:31:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:31:54,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269677945] [2024-11-19 00:31:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:31:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:31:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:31:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-19 00:31:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:31:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269677945] [2024-11-19 00:31:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269677945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:31:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930141973] [2024-11-19 00:31:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:31:55,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:31:55,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:31:55,070 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) [2024-11-19 00:31:55,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:31:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:31:55,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:31:55,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:31:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-19 00:31:55,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:31:55,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930141973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:31:55,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:31:55,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:31:55,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627504469] [2024-11-19 00:31:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:31:55,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:31:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:31:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:31:55,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:31:55,346 INFO L87 Difference]: Start difference. First operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:31:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:31:55,373 INFO L93 Difference]: Finished difference Result 183 states and 284 transitions. [2024-11-19 00:31:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:31:55,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2024-11-19 00:31:55,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:31:55,381 INFO L225 Difference]: With dead ends: 183 [2024-11-19 00:31:55,381 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 00:31:55,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:31:55,386 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:31:55,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:31:55,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 00:31:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 00:31:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:31:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-19 00:31:55,441 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2024-11-19 00:31:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:31:55,442 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-19 00:31:55,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:31:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-19 00:31:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-19 00:31:55,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:31:55,447 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:31:55,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 00:31:55,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 00:31:55,651 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:31:55,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:31:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash 760381860, now seen corresponding path program 1 times [2024-11-19 00:31:55,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:31:55,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508113448] [2024-11-19 00:31:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:31:55,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:31:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:31:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:31:56,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:31:56,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508113448] [2024-11-19 00:31:56,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508113448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:31:56,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267063987] [2024-11-19 00:31:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:31:56,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:31:56,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:31:56,156 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) [2024-11-19 00:31:56,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 00:31:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:31:56,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 00:31:56,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:31:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:31:56,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:31:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267063987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:31:56,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:31:56,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-19 00:31:56,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235328861] [2024-11-19 00:31:56,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:31:56,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:31:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:31:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:31:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:31:56,396 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:31:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:31:56,437 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2024-11-19 00:31:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:31:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2024-11-19 00:31:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:31:56,441 INFO L225 Difference]: With dead ends: 173 [2024-11-19 00:31:56,442 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 00:31:56,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:31:56,444 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:31:56,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:31:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 00:31:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 00:31:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:31:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2024-11-19 00:31:56,463 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2024-11-19 00:31:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:31:56,465 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2024-11-19 00:31:56,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:31:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2024-11-19 00:31:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-19 00:31:56,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:31:56,467 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:31:56,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 00:31:56,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-19 00:31:56,670 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:31:56,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:31:56,671 INFO L85 PathProgramCache]: Analyzing trace with hash -124307358, now seen corresponding path program 1 times [2024-11-19 00:31:56,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:31:56,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708905067] [2024-11-19 00:31:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:31:56,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:31:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:31:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:31:56,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:31:57,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708905067] [2024-11-19 00:31:57,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708905067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:31:57,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495871864] [2024-11-19 00:31:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:31:57,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:31:57,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:31:57,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:31:57,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 00:31:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:31:57,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 00:31:57,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:31:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:31:57,202 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:31:57,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495871864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:31:57,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:31:57,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 00:31:57,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437344166] [2024-11-19 00:31:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:31:57,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:31:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:31:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:31:57,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:31:57,206 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:31:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:31:57,260 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2024-11-19 00:31:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:31:57,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-11-19 00:31:57,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:31:57,262 INFO L225 Difference]: With dead ends: 176 [2024-11-19 00:31:57,262 INFO L226 Difference]: Without dead ends: 91 [2024-11-19 00:31:57,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:31:57,264 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:31:57,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:31:57,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-19 00:31:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-19 00:31:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:31:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-11-19 00:31:57,280 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2024-11-19 00:31:57,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:31:57,283 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-11-19 00:31:57,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:31:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-11-19 00:31:57,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-19 00:31:57,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:31:57,285 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:31:57,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 00:31:57,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:31:57,487 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:31:57,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:31:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash -233055546, now seen corresponding path program 1 times [2024-11-19 00:31:57,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:31:57,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899407719] [2024-11-19 00:31:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:31:57,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:31:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:31:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:31:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:31:58,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899407719] [2024-11-19 00:31:58,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899407719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:31:58,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:31:58,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:31:58,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522945515] [2024-11-19 00:31:58,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:31:58,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:31:58,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:31:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:31:58,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:31:58,917 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:31:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:31:59,164 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2024-11-19 00:31:59,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:31:59,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2024-11-19 00:31:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:31:59,167 INFO L225 Difference]: With dead ends: 133 [2024-11-19 00:31:59,169 INFO L226 Difference]: Without dead ends: 131 [2024-11-19 00:31:59,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:31:59,170 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 36 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:31:59,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 767 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:31:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-19 00:31:59,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2024-11-19 00:31:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:31:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2024-11-19 00:31:59,182 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 121 [2024-11-19 00:31:59,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:31:59,186 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2024-11-19 00:31:59,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:31:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2024-11-19 00:31:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-19 00:31:59,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:31:59,188 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:31:59,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:31:59,188 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:31:59,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:31:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash 44675301, now seen corresponding path program 1 times [2024-11-19 00:31:59,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:31:59,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751993746] [2024-11-19 00:31:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:31:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:31:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-19 00:32:00,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:00,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751993746] [2024-11-19 00:32:00,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751993746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:32:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896006871] [2024-11-19 00:32:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:00,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:00,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 00:32:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:01,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-19 00:32:01,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:01,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-19 00:32:01,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-19 00:32:01,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:01,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2024-11-19 00:32:02,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:02,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2024-11-19 00:32:02,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:02,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 40 [2024-11-19 00:32:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 00:32:02,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:32:03,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-19 00:32:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 00:32:03,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896006871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:32:03,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:32:03,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 50 [2024-11-19 00:32:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677551407] [2024-11-19 00:32:03,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:32:03,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-19 00:32:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-19 00:32:03,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 00:32:03,855 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2024-11-19 00:32:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:05,379 INFO L93 Difference]: Finished difference Result 191 states and 241 transitions. [2024-11-19 00:32:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 00:32:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) Word has length 122 [2024-11-19 00:32:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:05,381 INFO L225 Difference]: With dead ends: 191 [2024-11-19 00:32:05,382 INFO L226 Difference]: Without dead ends: 189 [2024-11-19 00:32:05,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 214 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=818, Invalid=3472, Unknown=0, NotChecked=0, Total=4290 [2024-11-19 00:32:05,388 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 644 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:05,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2093 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 00:32:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-19 00:32:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 132. [2024-11-19 00:32:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 110 states have internal predecessors, (137), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:32:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2024-11-19 00:32:05,408 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 122 [2024-11-19 00:32:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:05,409 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2024-11-19 00:32:05,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2024-11-19 00:32:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2024-11-19 00:32:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-19 00:32:05,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:05,412 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:05,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 00:32:05,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:05,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:05,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:05,614 INFO L85 PathProgramCache]: Analyzing trace with hash 972179707, now seen corresponding path program 1 times [2024-11-19 00:32:05,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:05,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737670606] [2024-11-19 00:32:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:05,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-19 00:32:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737670606] [2024-11-19 00:32:07,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737670606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:32:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112423767] [2024-11-19 00:32:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:07,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:07,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:07,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:07,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 00:32:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:07,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-19 00:32:07,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:07,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-19 00:32:07,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:07,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2024-11-19 00:32:08,263 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:08,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 38 [2024-11-19 00:32:08,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:08,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 36 [2024-11-19 00:32:08,648 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 00:32:08,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:32:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-19 00:32:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112423767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:32:09,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:32:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 26] total 52 [2024-11-19 00:32:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659188430] [2024-11-19 00:32:09,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:32:09,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 00:32:09,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:09,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 00:32:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=2244, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 00:32:09,653 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2024-11-19 00:32:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:11,171 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2024-11-19 00:32:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-19 00:32:11,171 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) Word has length 123 [2024-11-19 00:32:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:11,173 INFO L225 Difference]: With dead ends: 213 [2024-11-19 00:32:11,173 INFO L226 Difference]: Without dead ends: 211 [2024-11-19 00:32:11,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 216 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1027, Invalid=5135, Unknown=0, NotChecked=0, Total=6162 [2024-11-19 00:32:11,175 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 534 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:11,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1776 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 00:32:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-19 00:32:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 134. [2024-11-19 00:32:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 112 states have (on average 1.25) internal successors, (140), 112 states have internal predecessors, (140), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:32:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2024-11-19 00:32:11,188 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 123 [2024-11-19 00:32:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:11,188 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2024-11-19 00:32:11,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2024-11-19 00:32:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2024-11-19 00:32:11,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-19 00:32:11,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:11,190 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:11,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 00:32:11,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:11,395 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:11,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash -959553979, now seen corresponding path program 1 times [2024-11-19 00:32:11,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:11,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848826057] [2024-11-19 00:32:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:11,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:11,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:11,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848826057] [2024-11-19 00:32:11,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848826057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:11,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:11,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:32:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147527711] [2024-11-19 00:32:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:11,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:32:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:32:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:32:11,505 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:11,577 INFO L93 Difference]: Finished difference Result 347 states and 436 transitions. [2024-11-19 00:32:11,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:32:11,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-11-19 00:32:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:11,582 INFO L225 Difference]: With dead ends: 347 [2024-11-19 00:32:11,582 INFO L226 Difference]: Without dead ends: 216 [2024-11-19 00:32:11,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:32:11,583 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 54 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:11,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 510 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:32:11,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-19 00:32:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2024-11-19 00:32:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 180 states have (on average 1.2166666666666666) internal successors, (219), 181 states have internal predecessors, (219), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-19 00:32:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 263 transitions. [2024-11-19 00:32:11,607 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 263 transitions. Word has length 124 [2024-11-19 00:32:11,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:11,608 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 263 transitions. [2024-11-19 00:32:11,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:11,608 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 263 transitions. [2024-11-19 00:32:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-19 00:32:11,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:11,609 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:11,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 00:32:11,610 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:11,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1108535968, now seen corresponding path program 1 times [2024-11-19 00:32:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049373629] [2024-11-19 00:32:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:32:11,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049373629] [2024-11-19 00:32:11,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049373629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:32:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044243556] [2024-11-19 00:32:11,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:11,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:11,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:11,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:11,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 00:32:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:12,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 00:32:12,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:12,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2024-11-19 00:32:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-19 00:32:12,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:32:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:32:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044243556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:32:12,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:32:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 00:32:12,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14620756] [2024-11-19 00:32:12,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:32:12,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:32:12,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:32:12,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:32:12,395 INFO L87 Difference]: Start difference. First operand 213 states and 263 transitions. Second operand has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-19 00:32:12,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:12,683 INFO L93 Difference]: Finished difference Result 433 states and 532 transitions. [2024-11-19 00:32:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 00:32:12,684 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 124 [2024-11-19 00:32:12,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:12,686 INFO L225 Difference]: With dead ends: 433 [2024-11-19 00:32:12,686 INFO L226 Difference]: Without dead ends: 223 [2024-11-19 00:32:12,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-19 00:32:12,688 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 194 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:12,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 454 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:32:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-19 00:32:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 159. [2024-11-19 00:32:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 136 states have internal predecessors, (166), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:32:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2024-11-19 00:32:12,704 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 124 [2024-11-19 00:32:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:12,704 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2024-11-19 00:32:12,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-19 00:32:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2024-11-19 00:32:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-19 00:32:12,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:12,706 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:12,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 00:32:12,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:12,910 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:12,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1994128982, now seen corresponding path program 1 times [2024-11-19 00:32:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:12,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951928424] [2024-11-19 00:32:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:12,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:13,256 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:32:13,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:13,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951928424] [2024-11-19 00:32:13,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951928424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:32:13,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811481940] [2024-11-19 00:32:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:13,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:13,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:13,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:13,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 00:32:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:13,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 00:32:13,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:13,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:13,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-19 00:32:13,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:13,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 26 [2024-11-19 00:32:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-19 00:32:13,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:32:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-19 00:32:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811481940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:32:13,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:32:13,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 12 [2024-11-19 00:32:13,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837777798] [2024-11-19 00:32:13,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:32:13,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 00:32:13,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:13,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 00:32:13,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:32:13,857 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-19 00:32:14,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:14,105 INFO L93 Difference]: Finished difference Result 367 states and 455 transitions. [2024-11-19 00:32:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 00:32:14,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 125 [2024-11-19 00:32:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:14,111 INFO L225 Difference]: With dead ends: 367 [2024-11-19 00:32:14,111 INFO L226 Difference]: Without dead ends: 211 [2024-11-19 00:32:14,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-19 00:32:14,112 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 115 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:14,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 461 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:32:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-19 00:32:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 159. [2024-11-19 00:32:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.213235294117647) internal successors, (165), 136 states have internal predecessors, (165), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-19 00:32:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2024-11-19 00:32:14,128 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 125 [2024-11-19 00:32:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:14,128 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2024-11-19 00:32:14,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-19 00:32:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2024-11-19 00:32:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-19 00:32:14,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:14,130 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:14,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 00:32:14,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:14,331 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:14,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:14,331 INFO L85 PathProgramCache]: Analyzing trace with hash 220271354, now seen corresponding path program 1 times [2024-11-19 00:32:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:14,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074592445] [2024-11-19 00:32:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:32:14,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963558023] [2024-11-19 00:32:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:14,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:14,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:14,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 00:32:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:14,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 00:32:14,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:14,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 00:32:14,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 00:32:14,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 00:32:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:14,906 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:32:14,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074592445] [2024-11-19 00:32:14,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:32:14,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963558023] [2024-11-19 00:32:14,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963558023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:14,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:14,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:32:14,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120131966] [2024-11-19 00:32:14,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:14,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:32:14,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:14,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:32:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:32:14,909 INFO L87 Difference]: Start difference. First operand 159 states and 197 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:14,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:14,995 INFO L93 Difference]: Finished difference Result 417 states and 513 transitions. [2024-11-19 00:32:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:32:14,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2024-11-19 00:32:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:14,997 INFO L225 Difference]: With dead ends: 417 [2024-11-19 00:32:14,997 INFO L226 Difference]: Without dead ends: 261 [2024-11-19 00:32:14,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:32:14,998 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 48 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:14,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 279 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:32:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-19 00:32:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2024-11-19 00:32:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 204 states have (on average 1.1715686274509804) internal successors, (239), 204 states have internal predecessors, (239), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-19 00:32:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 303 transitions. [2024-11-19 00:32:15,024 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 303 transitions. Word has length 126 [2024-11-19 00:32:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:15,024 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 303 transitions. [2024-11-19 00:32:15,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 303 transitions. [2024-11-19 00:32:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-19 00:32:15,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:15,025 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:15,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 00:32:15,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 00:32:15,226 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:15,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2052560144, now seen corresponding path program 1 times [2024-11-19 00:32:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:15,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100591925] [2024-11-19 00:32:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:15,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:32:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515845386] [2024-11-19 00:32:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:15,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:15,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:15,280 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:15,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 00:32:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:15,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-19 00:32:15,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:15,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 00:32:15,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-19 00:32:15,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:15,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-19 00:32:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-11-19 00:32:15,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:32:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:16,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:16,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100591925] [2024-11-19 00:32:16,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:32:16,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515845386] [2024-11-19 00:32:16,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515845386] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 00:32:16,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:32:16,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-19 00:32:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977416961] [2024-11-19 00:32:16,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:16,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:32:16,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:16,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:32:16,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:32:16,110 INFO L87 Difference]: Start difference. First operand 249 states and 303 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:16,359 INFO L93 Difference]: Finished difference Result 641 states and 765 transitions. [2024-11-19 00:32:16,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:32:16,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-11-19 00:32:16,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:16,362 INFO L225 Difference]: With dead ends: 641 [2024-11-19 00:32:16,363 INFO L226 Difference]: Without dead ends: 395 [2024-11-19 00:32:16,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-19 00:32:16,368 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 96 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:16,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 293 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:32:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-19 00:32:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-11-19 00:32:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 314 states have (on average 1.1337579617834395) internal successors, (356), 316 states have internal predecessors, (356), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:32:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 460 transitions. [2024-11-19 00:32:16,426 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 460 transitions. Word has length 127 [2024-11-19 00:32:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:16,430 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 460 transitions. [2024-11-19 00:32:16,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 460 transitions. [2024-11-19 00:32:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 00:32:16,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:16,432 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:16,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 00:32:16,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:16,633 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:16,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash 177084399, now seen corresponding path program 1 times [2024-11-19 00:32:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:16,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598547324] [2024-11-19 00:32:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:16,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:32:16,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228880243] [2024-11-19 00:32:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:16,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:16,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:16,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:16,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 00:32:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:16,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 00:32:16,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:17,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 00:32:17,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 00:32:17,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 00:32:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:17,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:32:17,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:17,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598547324] [2024-11-19 00:32:17,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:32:17,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228880243] [2024-11-19 00:32:17,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228880243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:17,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:17,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:32:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677783768] [2024-11-19 00:32:17,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:17,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:32:17,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:32:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:32:17,259 INFO L87 Difference]: Start difference. First operand 391 states and 460 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:17,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:17,385 INFO L93 Difference]: Finished difference Result 777 states and 917 transitions. [2024-11-19 00:32:17,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:32:17,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2024-11-19 00:32:17,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:17,388 INFO L225 Difference]: With dead ends: 777 [2024-11-19 00:32:17,388 INFO L226 Difference]: Without dead ends: 389 [2024-11-19 00:32:17,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:32:17,389 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 21 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:17,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 277 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:32:17,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-19 00:32:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 382. [2024-11-19 00:32:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 305 states have (on average 1.1278688524590164) internal successors, (344), 307 states have internal predecessors, (344), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:32:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 448 transitions. [2024-11-19 00:32:17,426 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 448 transitions. Word has length 128 [2024-11-19 00:32:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:17,426 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 448 transitions. [2024-11-19 00:32:17,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 448 transitions. [2024-11-19 00:32:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:17,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:17,428 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:17,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 00:32:17,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 00:32:17,629 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:17,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:17,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1660078417, now seen corresponding path program 1 times [2024-11-19 00:32:17,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:17,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293178637] [2024-11-19 00:32:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:17,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:18,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:18,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293178637] [2024-11-19 00:32:18,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293178637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:18,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:18,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:32:18,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941415327] [2024-11-19 00:32:18,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:18,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:32:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:18,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:32:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:32:18,045 INFO L87 Difference]: Start difference. First operand 382 states and 448 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:18,206 INFO L93 Difference]: Finished difference Result 621 states and 738 transitions. [2024-11-19 00:32:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 00:32:18,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:32:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:18,210 INFO L225 Difference]: With dead ends: 621 [2024-11-19 00:32:18,210 INFO L226 Difference]: Without dead ends: 384 [2024-11-19 00:32:18,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:32:18,212 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:18,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 553 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:32:18,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-19 00:32:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-11-19 00:32:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 307 states have (on average 1.1302931596091206) internal successors, (347), 309 states have internal predecessors, (347), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:32:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 451 transitions. [2024-11-19 00:32:18,251 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 451 transitions. Word has length 129 [2024-11-19 00:32:18,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:18,253 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 451 transitions. [2024-11-19 00:32:18,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 451 transitions. [2024-11-19 00:32:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:18,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:18,255 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:18,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 00:32:18,255 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:18,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1794091923, now seen corresponding path program 1 times [2024-11-19 00:32:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:18,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616700535] [2024-11-19 00:32:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:18,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:19,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616700535] [2024-11-19 00:32:19,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616700535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:19,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:19,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:32:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638456225] [2024-11-19 00:32:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:19,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:32:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:19,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:32:19,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:32:19,010 INFO L87 Difference]: Start difference. First operand 384 states and 451 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:19,449 INFO L93 Difference]: Finished difference Result 861 states and 1018 transitions. [2024-11-19 00:32:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:32:19,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:32:19,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:19,453 INFO L225 Difference]: With dead ends: 861 [2024-11-19 00:32:19,453 INFO L226 Difference]: Without dead ends: 622 [2024-11-19 00:32:19,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:32:19,454 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 81 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:19,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 623 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:32:19,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-19 00:32:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 454. [2024-11-19 00:32:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 377 states have (on average 1.1591511936339522) internal successors, (437), 379 states have internal predecessors, (437), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:32:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 541 transitions. [2024-11-19 00:32:19,500 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 541 transitions. Word has length 129 [2024-11-19 00:32:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:19,500 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 541 transitions. [2024-11-19 00:32:19,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 541 transitions. [2024-11-19 00:32:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:19,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:19,502 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:19,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 00:32:19,503 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:19,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1535926485, now seen corresponding path program 1 times [2024-11-19 00:32:19,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:19,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274407843] [2024-11-19 00:32:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:19,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:19,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274407843] [2024-11-19 00:32:19,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274407843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:19,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:19,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:32:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198318841] [2024-11-19 00:32:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:19,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:32:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:32:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:32:19,863 INFO L87 Difference]: Start difference. First operand 454 states and 541 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:20,191 INFO L93 Difference]: Finished difference Result 968 states and 1160 transitions. [2024-11-19 00:32:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:32:20,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-19 00:32:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:20,197 INFO L225 Difference]: With dead ends: 968 [2024-11-19 00:32:20,197 INFO L226 Difference]: Without dead ends: 659 [2024-11-19 00:32:20,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:32:20,199 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 65 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:20,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 492 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:32:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-19 00:32:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 456. [2024-11-19 00:32:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 379 states have (on average 1.1556728232189974) internal successors, (438), 381 states have internal predecessors, (438), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:32:20,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 542 transitions. [2024-11-19 00:32:20,252 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 542 transitions. Word has length 129 [2024-11-19 00:32:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:20,253 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 542 transitions. [2024-11-19 00:32:20,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 542 transitions. [2024-11-19 00:32:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:20,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:20,254 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:20,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 00:32:20,255 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:20,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1928953495, now seen corresponding path program 1 times [2024-11-19 00:32:20,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:20,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090350308] [2024-11-19 00:32:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:20,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:20,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:20,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090350308] [2024-11-19 00:32:20,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090350308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:20,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:20,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 00:32:20,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206736065] [2024-11-19 00:32:20,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:20,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 00:32:20,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 00:32:20,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-19 00:32:20,980 INFO L87 Difference]: Start difference. First operand 456 states and 542 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:21,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:21,477 INFO L93 Difference]: Finished difference Result 897 states and 1076 transitions. [2024-11-19 00:32:21,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 00:32:21,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:32:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:21,481 INFO L225 Difference]: With dead ends: 897 [2024-11-19 00:32:21,481 INFO L226 Difference]: Without dead ends: 586 [2024-11-19 00:32:21,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:32:21,482 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 72 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:21,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1061 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:32:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-19 00:32:21,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 491. [2024-11-19 00:32:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 414 states have (on average 1.1570048309178744) internal successors, (479), 416 states have internal predecessors, (479), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-19 00:32:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 583 transitions. [2024-11-19 00:32:21,534 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 583 transitions. Word has length 129 [2024-11-19 00:32:21,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:21,535 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 583 transitions. [2024-11-19 00:32:21,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 583 transitions. [2024-11-19 00:32:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:21,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:21,537 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:21,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 00:32:21,537 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:21,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:21,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1687390910, now seen corresponding path program 1 times [2024-11-19 00:32:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:21,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282308771] [2024-11-19 00:32:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:22,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:22,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282308771] [2024-11-19 00:32:22,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282308771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:22,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:22,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 00:32:22,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466628648] [2024-11-19 00:32:22,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:22,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 00:32:22,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:22,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 00:32:22,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:32:22,578 INFO L87 Difference]: Start difference. First operand 491 states and 583 transitions. Second operand has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:23,223 INFO L93 Difference]: Finished difference Result 1131 states and 1358 transitions. [2024-11-19 00:32:23,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 00:32:23,224 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:32:23,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:23,228 INFO L225 Difference]: With dead ends: 1131 [2024-11-19 00:32:23,229 INFO L226 Difference]: Without dead ends: 785 [2024-11-19 00:32:23,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-19 00:32:23,230 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 155 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:23,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 802 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 00:32:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2024-11-19 00:32:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 781. [2024-11-19 00:32:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 647 states have (on average 1.1561051004636784) internal successors, (748), 652 states have internal predecessors, (748), 90 states have call successors, (90), 43 states have call predecessors, (90), 43 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-19 00:32:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 928 transitions. [2024-11-19 00:32:23,322 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 928 transitions. Word has length 129 [2024-11-19 00:32:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:23,323 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 928 transitions. [2024-11-19 00:32:23,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.777777777777778) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:23,323 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 928 transitions. [2024-11-19 00:32:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:23,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:23,325 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:23,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 00:32:23,325 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:23,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:23,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2080417920, now seen corresponding path program 1 times [2024-11-19 00:32:23,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:23,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642395380] [2024-11-19 00:32:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:24,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:24,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642395380] [2024-11-19 00:32:24,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642395380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:24,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:24,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-19 00:32:24,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051105141] [2024-11-19 00:32:24,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:24,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 00:32:24,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:24,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 00:32:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-19 00:32:24,776 INFO L87 Difference]: Start difference. First operand 781 states and 928 transitions. Second operand has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:26,072 INFO L93 Difference]: Finished difference Result 1595 states and 1913 transitions. [2024-11-19 00:32:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 00:32:26,073 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:32:26,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:26,078 INFO L225 Difference]: With dead ends: 1595 [2024-11-19 00:32:26,078 INFO L226 Difference]: Without dead ends: 1016 [2024-11-19 00:32:26,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2024-11-19 00:32:26,080 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 85 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:26,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 2058 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 00:32:26,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-11-19 00:32:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 832. [2024-11-19 00:32:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 698 states have (on average 1.170487106017192) internal successors, (817), 703 states have internal predecessors, (817), 90 states have call successors, (90), 43 states have call predecessors, (90), 43 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-19 00:32:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 997 transitions. [2024-11-19 00:32:26,167 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 997 transitions. Word has length 129 [2024-11-19 00:32:26,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:26,168 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 997 transitions. [2024-11-19 00:32:26,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 997 transitions. [2024-11-19 00:32:26,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:26,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:26,169 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:26,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 00:32:26,170 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:26,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1300069932, now seen corresponding path program 1 times [2024-11-19 00:32:26,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:26,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069055681] [2024-11-19 00:32:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:26,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:26,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069055681] [2024-11-19 00:32:26,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069055681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:26,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:26,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:32:26,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65099700] [2024-11-19 00:32:26,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:26,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:32:26,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:32:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:32:26,638 INFO L87 Difference]: Start difference. First operand 832 states and 997 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:32:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:26,957 INFO L93 Difference]: Finished difference Result 1644 states and 1975 transitions. [2024-11-19 00:32:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:32:26,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-11-19 00:32:26,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:26,962 INFO L225 Difference]: With dead ends: 1644 [2024-11-19 00:32:26,962 INFO L226 Difference]: Without dead ends: 1014 [2024-11-19 00:32:26,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:32:26,963 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 89 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:26,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 488 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:32:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-19 00:32:27,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 832. [2024-11-19 00:32:27,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 698 states have (on average 1.169054441260745) internal successors, (816), 703 states have internal predecessors, (816), 90 states have call successors, (90), 43 states have call predecessors, (90), 43 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-19 00:32:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 996 transitions. [2024-11-19 00:32:27,058 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 996 transitions. Word has length 129 [2024-11-19 00:32:27,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:27,058 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 996 transitions. [2024-11-19 00:32:27,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-19 00:32:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 996 transitions. [2024-11-19 00:32:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:27,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:27,060 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:27,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 00:32:27,061 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:27,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1434083438, now seen corresponding path program 1 times [2024-11-19 00:32:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:27,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226702356] [2024-11-19 00:32:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:27,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:27,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226702356] [2024-11-19 00:32:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226702356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:27,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:27,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-19 00:32:27,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272862820] [2024-11-19 00:32:27,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:27,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 00:32:27,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:27,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 00:32:27,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-19 00:32:27,941 INFO L87 Difference]: Start difference. First operand 832 states and 996 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:28,714 INFO L93 Difference]: Finished difference Result 1716 states and 2070 transitions. [2024-11-19 00:32:28,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 00:32:28,715 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:32:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:28,720 INFO L225 Difference]: With dead ends: 1716 [2024-11-19 00:32:28,720 INFO L226 Difference]: Without dead ends: 1086 [2024-11-19 00:32:28,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-19 00:32:28,722 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 83 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:28,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2113 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 00:32:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2024-11-19 00:32:28,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 885. [2024-11-19 00:32:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 751 states have (on average 1.1837549933422105) internal successors, (889), 756 states have internal predecessors, (889), 90 states have call successors, (90), 43 states have call predecessors, (90), 43 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-19 00:32:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1069 transitions. [2024-11-19 00:32:28,817 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1069 transitions. Word has length 129 [2024-11-19 00:32:28,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:28,817 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1069 transitions. [2024-11-19 00:32:28,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1069 transitions. [2024-11-19 00:32:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:28,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:28,820 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:28,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 00:32:28,820 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:28,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1585547863, now seen corresponding path program 1 times [2024-11-19 00:32:28,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:28,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81902593] [2024-11-19 00:32:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:28,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:29,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:29,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81902593] [2024-11-19 00:32:29,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81902593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:29,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:29,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:32:29,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094963765] [2024-11-19 00:32:29,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:29,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:32:29,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:29,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:32:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:32:29,851 INFO L87 Difference]: Start difference. First operand 885 states and 1069 transitions. Second operand has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:30,525 INFO L93 Difference]: Finished difference Result 1657 states and 2013 transitions. [2024-11-19 00:32:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 00:32:30,525 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:32:30,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:30,530 INFO L225 Difference]: With dead ends: 1657 [2024-11-19 00:32:30,531 INFO L226 Difference]: Without dead ends: 974 [2024-11-19 00:32:30,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-19 00:32:30,537 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 70 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:30,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 946 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 00:32:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-11-19 00:32:30,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 888. [2024-11-19 00:32:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 754 states have (on average 1.1830238726790452) internal successors, (892), 759 states have internal predecessors, (892), 90 states have call successors, (90), 43 states have call predecessors, (90), 43 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2024-11-19 00:32:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1072 transitions. [2024-11-19 00:32:30,662 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1072 transitions. Word has length 129 [2024-11-19 00:32:30,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:30,662 INFO L471 AbstractCegarLoop]: Abstraction has 888 states and 1072 transitions. [2024-11-19 00:32:30,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1072 transitions. [2024-11-19 00:32:30,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:30,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:30,664 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:30,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 00:32:30,665 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:30,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:30,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1722118031, now seen corresponding path program 1 times [2024-11-19 00:32:30,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:30,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891690237] [2024-11-19 00:32:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:30,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:31,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:31,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891690237] [2024-11-19 00:32:31,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891690237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:31,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:31,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:32:31,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078716] [2024-11-19 00:32:31,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:31,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:32:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:31,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:32:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:32:31,831 INFO L87 Difference]: Start difference. First operand 888 states and 1072 transitions. Second operand has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:32,377 INFO L93 Difference]: Finished difference Result 1657 states and 2004 transitions. [2024-11-19 00:32:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 00:32:32,379 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:32:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:32,383 INFO L225 Difference]: With dead ends: 1657 [2024-11-19 00:32:32,383 INFO L226 Difference]: Without dead ends: 971 [2024-11-19 00:32:32,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:32:32,385 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 79 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:32,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1001 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:32:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2024-11-19 00:32:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 801. [2024-11-19 00:32:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 682 states have (on average 1.1730205278592376) internal successors, (800), 686 states have internal predecessors, (800), 80 states have call successors, (80), 38 states have call predecessors, (80), 38 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:32:32,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 960 transitions. [2024-11-19 00:32:32,484 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 960 transitions. Word has length 129 [2024-11-19 00:32:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:32,485 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 960 transitions. [2024-11-19 00:32:32,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 960 transitions. [2024-11-19 00:32:32,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:32,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:32,487 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:32,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 00:32:32,487 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:32,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:32,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1873582456, now seen corresponding path program 1 times [2024-11-19 00:32:32,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:32,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841397225] [2024-11-19 00:32:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:35,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:35,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841397225] [2024-11-19 00:32:35,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841397225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:35,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:35,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 00:32:35,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811509165] [2024-11-19 00:32:35,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:35,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:32:35,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:35,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:32:35,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:32:35,466 INFO L87 Difference]: Start difference. First operand 801 states and 960 transitions. Second operand has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:39,674 INFO L93 Difference]: Finished difference Result 1540 states and 1852 transitions. [2024-11-19 00:32:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 00:32:39,675 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:32:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:39,679 INFO L225 Difference]: With dead ends: 1540 [2024-11-19 00:32:39,679 INFO L226 Difference]: Without dead ends: 941 [2024-11-19 00:32:39,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2024-11-19 00:32:39,683 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 149 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:39,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1851 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-19 00:32:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-19 00:32:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 807. [2024-11-19 00:32:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 688 states have (on average 1.1758720930232558) internal successors, (809), 692 states have internal predecessors, (809), 80 states have call successors, (80), 38 states have call predecessors, (80), 38 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:32:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 969 transitions. [2024-11-19 00:32:39,811 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 969 transitions. Word has length 129 [2024-11-19 00:32:39,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:39,814 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 969 transitions. [2024-11-19 00:32:39,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:39,814 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 969 transitions. [2024-11-19 00:32:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:39,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:39,815 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:39,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 00:32:39,816 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:39,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2028357830, now seen corresponding path program 1 times [2024-11-19 00:32:39,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:39,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178333001] [2024-11-19 00:32:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:39,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:40,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:40,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178333001] [2024-11-19 00:32:40,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178333001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:40,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:40,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:32:40,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988779867] [2024-11-19 00:32:40,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:40,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:32:40,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:40,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:32:40,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:32:40,467 INFO L87 Difference]: Start difference. First operand 807 states and 969 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:40,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:40,891 INFO L93 Difference]: Finished difference Result 1652 states and 1981 transitions. [2024-11-19 00:32:40,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:32:40,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:32:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:40,897 INFO L225 Difference]: With dead ends: 1652 [2024-11-19 00:32:40,897 INFO L226 Difference]: Without dead ends: 1038 [2024-11-19 00:32:40,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:32:40,899 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 78 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:40,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 947 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:32:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-11-19 00:32:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 781. [2024-11-19 00:32:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 662 states have (on average 1.1450151057401812) internal successors, (758), 666 states have internal predecessors, (758), 80 states have call successors, (80), 38 states have call predecessors, (80), 38 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:32:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 918 transitions. [2024-11-19 00:32:41,012 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 918 transitions. Word has length 129 [2024-11-19 00:32:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:41,013 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 918 transitions. [2024-11-19 00:32:41,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 918 transitions. [2024-11-19 00:32:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:41,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:41,014 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:41,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 00:32:41,014 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:41,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:41,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1856979603, now seen corresponding path program 1 times [2024-11-19 00:32:41,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:41,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552335415] [2024-11-19 00:32:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:41,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:41,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:41,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552335415] [2024-11-19 00:32:41,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552335415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:41,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:41,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:32:41,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628964860] [2024-11-19 00:32:41,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:41,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:32:41,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:41,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:32:41,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:32:41,671 INFO L87 Difference]: Start difference. First operand 781 states and 918 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:42,213 INFO L93 Difference]: Finished difference Result 1509 states and 1778 transitions. [2024-11-19 00:32:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:32:42,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:32:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:42,219 INFO L225 Difference]: With dead ends: 1509 [2024-11-19 00:32:42,219 INFO L226 Difference]: Without dead ends: 930 [2024-11-19 00:32:42,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:32:42,221 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 79 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:42,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 947 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:32:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-19 00:32:42,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 766. [2024-11-19 00:32:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 647 states have (on average 1.1298299845440494) internal successors, (731), 651 states have internal predecessors, (731), 80 states have call successors, (80), 38 states have call predecessors, (80), 38 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:32:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 891 transitions. [2024-11-19 00:32:42,355 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 891 transitions. Word has length 129 [2024-11-19 00:32:42,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:42,356 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 891 transitions. [2024-11-19 00:32:42,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 891 transitions. [2024-11-19 00:32:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:42,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:42,358 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:42,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 00:32:42,359 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:42,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash -2007595962, now seen corresponding path program 1 times [2024-11-19 00:32:42,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:42,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605961944] [2024-11-19 00:32:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:42,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:42,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605961944] [2024-11-19 00:32:42,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605961944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:42,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:42,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:32:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002472268] [2024-11-19 00:32:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:42,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:32:42,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:42,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:32:42,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:32:42,557 INFO L87 Difference]: Start difference. First operand 766 states and 891 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:42,854 INFO L93 Difference]: Finished difference Result 1440 states and 1676 transitions. [2024-11-19 00:32:42,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:32:42,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-19 00:32:42,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:42,860 INFO L225 Difference]: With dead ends: 1440 [2024-11-19 00:32:42,861 INFO L226 Difference]: Without dead ends: 876 [2024-11-19 00:32:42,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:32:42,862 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 89 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:42,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 579 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:32:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-19 00:32:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 712. [2024-11-19 00:32:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 593 states have (on average 1.1247892074198989) internal successors, (667), 597 states have internal predecessors, (667), 80 states have call successors, (80), 38 states have call predecessors, (80), 38 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:32:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 827 transitions. [2024-11-19 00:32:42,988 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 827 transitions. Word has length 129 [2024-11-19 00:32:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:42,988 INFO L471 AbstractCegarLoop]: Abstraction has 712 states and 827 transitions. [2024-11-19 00:32:42,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 827 transitions. [2024-11-19 00:32:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:42,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:42,990 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:42,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 00:32:42,990 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:42,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1227247974, now seen corresponding path program 1 times [2024-11-19 00:32:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415757031] [2024-11-19 00:32:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:44,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:44,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415757031] [2024-11-19 00:32:44,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415757031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:44,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:44,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-19 00:32:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031481674] [2024-11-19 00:32:44,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:44,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:32:44,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:32:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:32:44,438 INFO L87 Difference]: Start difference. First operand 712 states and 827 transitions. Second operand has 20 states, 16 states have (on average 3.25) internal successors, (52), 20 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-19 00:32:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:45,470 INFO L93 Difference]: Finished difference Result 1361 states and 1583 transitions. [2024-11-19 00:32:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 00:32:45,471 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.25) internal successors, (52), 20 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-19 00:32:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:45,474 INFO L225 Difference]: With dead ends: 1361 [2024-11-19 00:32:45,474 INFO L226 Difference]: Without dead ends: 851 [2024-11-19 00:32:45,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2024-11-19 00:32:45,475 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 85 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:45,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 2301 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 00:32:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-11-19 00:32:45,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 821. [2024-11-19 00:32:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 683 states have (on average 1.1215226939970717) internal successors, (766), 688 states have internal predecessors, (766), 92 states have call successors, (92), 45 states have call predecessors, (92), 45 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-19 00:32:45,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 950 transitions. [2024-11-19 00:32:45,625 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 950 transitions. Word has length 129 [2024-11-19 00:32:45,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:45,626 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 950 transitions. [2024-11-19 00:32:45,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.25) internal successors, (52), 20 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-19 00:32:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 950 transitions. [2024-11-19 00:32:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:45,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:45,627 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:45,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 00:32:45,627 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:45,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1620274984, now seen corresponding path program 1 times [2024-11-19 00:32:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:45,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984911509] [2024-11-19 00:32:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:45,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:46,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984911509] [2024-11-19 00:32:46,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984911509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:46,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:46,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 00:32:46,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099594101] [2024-11-19 00:32:46,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:46,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:32:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:32:46,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:32:46,248 INFO L87 Difference]: Start difference. First operand 821 states and 950 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:46,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:46,767 INFO L93 Difference]: Finished difference Result 1661 states and 1924 transitions. [2024-11-19 00:32:46,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 00:32:46,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-19 00:32:46,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:46,773 INFO L225 Difference]: With dead ends: 1661 [2024-11-19 00:32:46,773 INFO L226 Difference]: Without dead ends: 1042 [2024-11-19 00:32:46,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:32:46,775 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 62 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:46,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 858 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:32:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2024-11-19 00:32:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 818. [2024-11-19 00:32:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 680 states have (on average 1.113235294117647) internal successors, (757), 685 states have internal predecessors, (757), 92 states have call successors, (92), 45 states have call predecessors, (92), 45 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-19 00:32:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 941 transitions. [2024-11-19 00:32:46,933 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 941 transitions. Word has length 129 [2024-11-19 00:32:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:46,933 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 941 transitions. [2024-11-19 00:32:46,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-19 00:32:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 941 transitions. [2024-11-19 00:32:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:46,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:46,935 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:46,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 00:32:46,935 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:46,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:46,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1378712399, now seen corresponding path program 1 times [2024-11-19 00:32:46,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906320664] [2024-11-19 00:32:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:47,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:47,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906320664] [2024-11-19 00:32:47,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906320664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:47,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:47,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 00:32:47,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685210322] [2024-11-19 00:32:47,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:47,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 00:32:47,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 00:32:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-19 00:32:47,618 INFO L87 Difference]: Start difference. First operand 818 states and 941 transitions. Second operand has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:48,241 INFO L93 Difference]: Finished difference Result 1499 states and 1727 transitions. [2024-11-19 00:32:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 00:32:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-19 00:32:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:48,247 INFO L225 Difference]: With dead ends: 1499 [2024-11-19 00:32:48,247 INFO L226 Difference]: Without dead ends: 883 [2024-11-19 00:32:48,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-19 00:32:48,249 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 79 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:48,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 961 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:32:48,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-19 00:32:48,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 798. [2024-11-19 00:32:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 659 states have (on average 1.103186646433991) internal successors, (727), 664 states have internal predecessors, (727), 92 states have call successors, (92), 46 states have call predecessors, (92), 46 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-19 00:32:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 911 transitions. [2024-11-19 00:32:48,408 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 911 transitions. Word has length 129 [2024-11-19 00:32:48,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:48,410 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 911 transitions. [2024-11-19 00:32:48,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-19 00:32:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 911 transitions. [2024-11-19 00:32:48,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 00:32:48,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:48,412 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:48,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 00:32:48,412 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:48,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1361261480, now seen corresponding path program 1 times [2024-11-19 00:32:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:48,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701267286] [2024-11-19 00:32:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:48,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:48,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701267286] [2024-11-19 00:32:48,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701267286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:32:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615150036] [2024-11-19 00:32:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:48,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:32:48,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:32:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:32:48,588 INFO L87 Difference]: Start difference. First operand 798 states and 911 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:48,925 INFO L93 Difference]: Finished difference Result 1419 states and 1622 transitions. [2024-11-19 00:32:48,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:32:48,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-19 00:32:48,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:48,929 INFO L225 Difference]: With dead ends: 1419 [2024-11-19 00:32:48,929 INFO L226 Difference]: Without dead ends: 827 [2024-11-19 00:32:48,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:32:48,934 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 86 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:48,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 582 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:32:48,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-19 00:32:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 744. [2024-11-19 00:32:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 605 states have (on average 1.0958677685950413) internal successors, (663), 610 states have internal predecessors, (663), 92 states have call successors, (92), 46 states have call predecessors, (92), 46 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-19 00:32:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 847 transitions. [2024-11-19 00:32:49,099 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 847 transitions. Word has length 129 [2024-11-19 00:32:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:49,099 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 847 transitions. [2024-11-19 00:32:49,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 847 transitions. [2024-11-19 00:32:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 00:32:49,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:49,100 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:49,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 00:32:49,101 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:49,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:49,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1388191522, now seen corresponding path program 1 times [2024-11-19 00:32:49,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:49,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97204346] [2024-11-19 00:32:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:49,190 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:49,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97204346] [2024-11-19 00:32:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97204346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:49,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:49,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:32:49,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424933274] [2024-11-19 00:32:49,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:49,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:32:49,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:49,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:32:49,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:32:49,192 INFO L87 Difference]: Start difference. First operand 744 states and 847 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:49,418 INFO L93 Difference]: Finished difference Result 1327 states and 1510 transitions. [2024-11-19 00:32:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:32:49,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 131 [2024-11-19 00:32:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:49,423 INFO L225 Difference]: With dead ends: 1327 [2024-11-19 00:32:49,423 INFO L226 Difference]: Without dead ends: 789 [2024-11-19 00:32:49,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:32:49,425 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:49,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 465 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:32:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2024-11-19 00:32:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 744. [2024-11-19 00:32:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 605 states have (on average 1.0760330578512396) internal successors, (651), 610 states have internal predecessors, (651), 92 states have call successors, (92), 46 states have call predecessors, (92), 46 states have return successors, (92), 87 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-19 00:32:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 835 transitions. [2024-11-19 00:32:49,582 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 835 transitions. Word has length 131 [2024-11-19 00:32:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:49,583 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 835 transitions. [2024-11-19 00:32:49,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 835 transitions. [2024-11-19 00:32:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-19 00:32:49,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:49,584 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:49,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-19 00:32:49,585 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:49,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1501672288, now seen corresponding path program 1 times [2024-11-19 00:32:49,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:49,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575403880] [2024-11-19 00:32:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-19 00:32:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575403880] [2024-11-19 00:32:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575403880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:32:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807345078] [2024-11-19 00:32:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:50,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:50,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:50,175 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:50,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 00:32:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:50,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 00:32:50,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:50,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-19 00:32:50,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-19 00:32:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 231 proven. 12 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-19 00:32:50,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:32:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-11-19 00:32:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807345078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:32:51,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:32:51,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 22 [2024-11-19 00:32:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222308637] [2024-11-19 00:32:51,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:32:51,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 00:32:51,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 00:32:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2024-11-19 00:32:51,028 INFO L87 Difference]: Start difference. First operand 744 states and 835 transitions. Second operand has 22 states, 18 states have (on average 4.833333333333333) internal successors, (87), 22 states have internal predecessors, (87), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-19 00:32:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:51,626 INFO L93 Difference]: Finished difference Result 1294 states and 1445 transitions. [2024-11-19 00:32:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 00:32:51,627 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.833333333333333) internal successors, (87), 22 states have internal predecessors, (87), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) Word has length 136 [2024-11-19 00:32:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:51,630 INFO L225 Difference]: With dead ends: 1294 [2024-11-19 00:32:51,630 INFO L226 Difference]: Without dead ends: 756 [2024-11-19 00:32:51,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 262 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2024-11-19 00:32:51,633 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 585 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:51,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 627 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 00:32:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-19 00:32:51,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 636. [2024-11-19 00:32:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 511 states have (on average 1.0704500978473581) internal successors, (547), 515 states have internal predecessors, (547), 80 states have call successors, (80), 44 states have call predecessors, (80), 44 states have return successors, (80), 76 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-19 00:32:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 707 transitions. [2024-11-19 00:32:51,758 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 707 transitions. Word has length 136 [2024-11-19 00:32:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:51,759 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 707 transitions. [2024-11-19 00:32:51,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.833333333333333) internal successors, (87), 22 states have internal predecessors, (87), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-19 00:32:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 707 transitions. [2024-11-19 00:32:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-19 00:32:51,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:51,760 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:51,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 00:32:51,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-19 00:32:51,961 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:51,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:51,961 INFO L85 PathProgramCache]: Analyzing trace with hash -916891456, now seen corresponding path program 1 times [2024-11-19 00:32:51,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:51,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300384116] [2024-11-19 00:32:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:51,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:32:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555100728] [2024-11-19 00:32:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:52,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:52,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:52,033 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:52,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 00:32:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:52,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-19 00:32:52,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:52,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-19 00:32:52,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:52,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:52,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:52,736 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:52,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 26 [2024-11-19 00:32:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:52,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:32:52,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:52,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300384116] [2024-11-19 00:32:52,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:32:52,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555100728] [2024-11-19 00:32:52,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555100728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:52,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:52,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:32:52,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196476476] [2024-11-19 00:32:52,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:52,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:32:52,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:52,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:32:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:32:52,766 INFO L87 Difference]: Start difference. First operand 636 states and 707 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:53,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:53,271 INFO L93 Difference]: Finished difference Result 1319 states and 1461 transitions. [2024-11-19 00:32:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 00:32:53,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 136 [2024-11-19 00:32:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:53,275 INFO L225 Difference]: With dead ends: 1319 [2024-11-19 00:32:53,275 INFO L226 Difference]: Without dead ends: 747 [2024-11-19 00:32:53,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:32:53,277 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 64 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:53,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 577 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:32:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2024-11-19 00:32:53,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 524. [2024-11-19 00:32:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 429 states have (on average 1.0582750582750582) internal successors, (454), 431 states have internal predecessors, (454), 60 states have call successors, (60), 34 states have call predecessors, (60), 34 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-19 00:32:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 574 transitions. [2024-11-19 00:32:53,424 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 574 transitions. Word has length 136 [2024-11-19 00:32:53,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:53,425 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 574 transitions. [2024-11-19 00:32:53,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 574 transitions. [2024-11-19 00:32:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 00:32:53,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:53,426 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:53,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 00:32:53,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-19 00:32:53,631 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:53,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 935866485, now seen corresponding path program 1 times [2024-11-19 00:32:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180491365] [2024-11-19 00:32:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:53,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:32:53,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663965501] [2024-11-19 00:32:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:53,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:53,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:53,730 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:53,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 00:32:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:54,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 00:32:54,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:54,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:54,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:54,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:54,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:54,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2024-11-19 00:32:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:54,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:32:54,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180491365] [2024-11-19 00:32:54,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:32:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663965501] [2024-11-19 00:32:54,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663965501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:54,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:54,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:32:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156593625] [2024-11-19 00:32:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:54,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:32:54,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:32:54,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:32:54,349 INFO L87 Difference]: Start difference. First operand 524 states and 574 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:54,826 INFO L93 Difference]: Finished difference Result 994 states and 1090 transitions. [2024-11-19 00:32:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:32:54,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-11-19 00:32:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:54,830 INFO L225 Difference]: With dead ends: 994 [2024-11-19 00:32:54,831 INFO L226 Difference]: Without dead ends: 638 [2024-11-19 00:32:54,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:32:54,832 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 59 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:54,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 533 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 00:32:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-19 00:32:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 524. [2024-11-19 00:32:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 429 states have (on average 1.0536130536130537) internal successors, (452), 431 states have internal predecessors, (452), 60 states have call successors, (60), 34 states have call predecessors, (60), 34 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-19 00:32:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 572 transitions. [2024-11-19 00:32:54,966 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 572 transitions. Word has length 138 [2024-11-19 00:32:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:54,966 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 572 transitions. [2024-11-19 00:32:54,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 572 transitions. [2024-11-19 00:32:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 00:32:54,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:54,969 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:54,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 00:32:55,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-19 00:32:55,174 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:55,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash 271925311, now seen corresponding path program 1 times [2024-11-19 00:32:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:55,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245630288] [2024-11-19 00:32:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:55,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 00:32:55,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624269586] [2024-11-19 00:32:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:55,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:55,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:32:55,272 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 00:32:55,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 00:32:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:55,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 00:32:55,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:32:55,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-19 00:32:55,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:55,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:55,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 00:32:55,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 00:32:55,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2024-11-19 00:32:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:55,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:32:55,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:55,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245630288] [2024-11-19 00:32:55,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 00:32:55,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624269586] [2024-11-19 00:32:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624269586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:55,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:55,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 00:32:55,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719361661] [2024-11-19 00:32:55,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:55,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 00:32:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 00:32:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:32:55,677 INFO L87 Difference]: Start difference. First operand 524 states and 572 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:56,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:32:56,024 INFO L93 Difference]: Finished difference Result 1033 states and 1126 transitions. [2024-11-19 00:32:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:32:56,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-11-19 00:32:56,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:32:56,028 INFO L225 Difference]: With dead ends: 1033 [2024-11-19 00:32:56,028 INFO L226 Difference]: Without dead ends: 677 [2024-11-19 00:32:56,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:32:56,029 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 53 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:32:56,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 403 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:32:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-19 00:32:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 524. [2024-11-19 00:32:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 429 states have (on average 1.048951048951049) internal successors, (450), 431 states have internal predecessors, (450), 60 states have call successors, (60), 34 states have call predecessors, (60), 34 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-19 00:32:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 570 transitions. [2024-11-19 00:32:56,166 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 570 transitions. Word has length 138 [2024-11-19 00:32:56,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:32:56,167 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 570 transitions. [2024-11-19 00:32:56,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-19 00:32:56,167 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 570 transitions. [2024-11-19 00:32:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-19 00:32:56,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:32:56,168 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:32:56,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 00:32:56,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:32:56,370 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:32:56,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:32:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1134112650, now seen corresponding path program 1 times [2024-11-19 00:32:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:32:56,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993611836] [2024-11-19 00:32:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:32:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:32:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:32:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 00:32:57,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:32:57,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993611836] [2024-11-19 00:32:57,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993611836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:32:57,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:32:57,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 00:32:57,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615403647] [2024-11-19 00:32:57,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:32:57,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 00:32:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:32:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 00:32:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-19 00:32:57,682 INFO L87 Difference]: Start difference. First operand 524 states and 570 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16)