./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a8265a1502e23b0364b9cd16198377a0ca498fc346156a58eeb954c0e23f901 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:16:48,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:16:48,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:16:48,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:16:48,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:16:48,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:16:48,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:16:48,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:16:48,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:16:48,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:16:48,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:16:48,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:16:48,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:16:48,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:16:48,777 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:16:48,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:16:48,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:16:48,778 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:16:48,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:16:48,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:16:48,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:16:48,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:16:48,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:16:48,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:16:48,781 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:16:48,781 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:16:48,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:16:48,782 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:16:48,782 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:16:48,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:16:48,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:16:48,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:16:48,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:16:48,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:16:48,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:16:48,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:16:48,783 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:16:48,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:16:48,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:16:48,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:16:48,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:16:48,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:16:48,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8265a1502e23b0364b9cd16198377a0ca498fc346156a58eeb954c0e23f901 [2024-11-16 08:16:48,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:16:48,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:16:48,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:16:48,987 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:16:48,987 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:16:48,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c [2024-11-16 08:16:50,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:16:50,321 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:16:50,321 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c [2024-11-16 08:16:50,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b2242ae1/638f0dc7796f47dab63cbaa7775d7869/FLAGb1c88f658 [2024-11-16 08:16:50,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b2242ae1/638f0dc7796f47dab63cbaa7775d7869 [2024-11-16 08:16:50,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:16:50,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:16:50,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:16:50,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:16:50,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:16:50,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ac13d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50, skipping insertion in model container [2024-11-16 08:16:50,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:16:50,547 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c[8209,8222] [2024-11-16 08:16:50,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:16:50,576 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:16:50,615 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/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c[8209,8222] [2024-11-16 08:16:50,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:16:50,634 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:16:50,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50 WrapperNode [2024-11-16 08:16:50,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:16:50,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:16:50,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:16:50,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:16:50,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,669 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 277 [2024-11-16 08:16:50,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:16:50,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:16:50,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:16:50,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:16:50,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,692 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 08:16:50,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,697 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:16:50,702 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:16:50,702 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:16:50,702 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:16:50,703 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (1/1) ... [2024-11-16 08:16:50,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:16:50,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:50,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 08:16:50,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 08:16:50,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:16:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:16:50,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:16:50,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:16:50,849 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:16:50,851 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:16:51,115 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-16 08:16:51,117 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:16:51,130 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:16:51,130 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:16:51,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:16:51 BoogieIcfgContainer [2024-11-16 08:16:51,134 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:16:51,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:16:51,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:16:51,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:16:51,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:16:50" (1/3) ... [2024-11-16 08:16:51,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7cfe35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:16:51, skipping insertion in model container [2024-11-16 08:16:51,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:16:50" (2/3) ... [2024-11-16 08:16:51,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7cfe35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:16:51, skipping insertion in model container [2024-11-16 08:16:51,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:16:51" (3/3) ... [2024-11-16 08:16:51,143 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c [2024-11-16 08:16:51,158 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:16:51,158 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:16:51,208 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:16:51,213 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;@12858513, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:16:51,217 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:16:51,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 72 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-16 08:16:51,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,229 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,230 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash -203719005, now seen corresponding path program 1 times [2024-11-16 08:16:51,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672368887] [2024-11-16 08:16:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:51,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672368887] [2024-11-16 08:16:51,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672368887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:51,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:51,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 08:16:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248002041] [2024-11-16 08:16:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:51,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 08:16:51,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 08:16:51,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 08:16:51,482 INFO L87 Difference]: Start difference. First operand has 73 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 72 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:51,501 INFO L93 Difference]: Finished difference Result 117 states and 187 transitions. [2024-11-16 08:16:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 08:16:51,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-16 08:16:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:51,509 INFO L225 Difference]: With dead ends: 117 [2024-11-16 08:16:51,510 INFO L226 Difference]: Without dead ends: 68 [2024-11-16 08:16:51,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 08:16:51,515 INFO L432 NwaCegarLoop]: 116 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, 116 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 [2024-11-16 08:16:51,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-16 08:16:51,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-16 08:16:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.671641791044776) internal successors, (112), 67 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 112 transitions. [2024-11-16 08:16:51,566 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 112 transitions. Word has length 23 [2024-11-16 08:16:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:51,569 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 112 transitions. [2024-11-16 08:16:51,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,570 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 112 transitions. [2024-11-16 08:16:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-16 08:16:51,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:16:51,571 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1200791358, now seen corresponding path program 1 times [2024-11-16 08:16:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181618380] [2024-11-16 08:16:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:51,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:51,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181618380] [2024-11-16 08:16:51,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181618380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:51,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:51,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:16:51,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605960604] [2024-11-16 08:16:51,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:51,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:16:51,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:51,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:16:51,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:51,760 INFO L87 Difference]: Start difference. First operand 68 states and 112 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:51,840 INFO L93 Difference]: Finished difference Result 150 states and 236 transitions. [2024-11-16 08:16:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 08:16:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-16 08:16:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:51,842 INFO L225 Difference]: With dead ends: 150 [2024-11-16 08:16:51,843 INFO L226 Difference]: Without dead ends: 107 [2024-11-16 08:16:51,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:16:51,846 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 59 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:51,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 403 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:51,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-16 08:16:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 68. [2024-11-16 08:16:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.328358208955224) internal successors, (89), 67 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2024-11-16 08:16:51,856 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 23 [2024-11-16 08:16:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:51,856 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2024-11-16 08:16:51,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2024-11-16 08:16:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-16 08:16:51,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:51,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:51,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:16:51,858 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:51,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash 478861228, now seen corresponding path program 1 times [2024-11-16 08:16:51,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:51,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941751504] [2024-11-16 08:16:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:52,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:52,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941751504] [2024-11-16 08:16:52,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941751504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:52,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:52,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:52,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365889602] [2024-11-16 08:16:52,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:52,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:52,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:52,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:52,030 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:52,201 INFO L93 Difference]: Finished difference Result 380 states and 569 transitions. [2024-11-16 08:16:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:16:52,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-16 08:16:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:52,205 INFO L225 Difference]: With dead ends: 380 [2024-11-16 08:16:52,207 INFO L226 Difference]: Without dead ends: 341 [2024-11-16 08:16:52,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 08:16:52,208 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 483 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:52,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 921 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-16 08:16:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 104. [2024-11-16 08:16:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 103 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 145 transitions. [2024-11-16 08:16:52,224 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 145 transitions. Word has length 45 [2024-11-16 08:16:52,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:52,225 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 145 transitions. [2024-11-16 08:16:52,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,225 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 145 transitions. [2024-11-16 08:16:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-16 08:16:52,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:52,226 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:52,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:16:52,227 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:52,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:52,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1381467346, now seen corresponding path program 1 times [2024-11-16 08:16:52,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874854008] [2024-11-16 08:16:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:52,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:52,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:52,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874854008] [2024-11-16 08:16:52,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874854008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:52,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:52,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577330530] [2024-11-16 08:16:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:52,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:52,482 INFO L87 Difference]: Start difference. First operand 104 states and 145 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:52,571 INFO L93 Difference]: Finished difference Result 182 states and 263 transitions. [2024-11-16 08:16:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:52,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-16 08:16:52,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:52,572 INFO L225 Difference]: With dead ends: 182 [2024-11-16 08:16:52,572 INFO L226 Difference]: Without dead ends: 107 [2024-11-16 08:16:52,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:16:52,573 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 135 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:52,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 251 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:52,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-16 08:16:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2024-11-16 08:16:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 103 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2024-11-16 08:16:52,586 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 47 [2024-11-16 08:16:52,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:52,587 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2024-11-16 08:16:52,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2024-11-16 08:16:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 08:16:52,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:52,588 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:52,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:16:52,588 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:52,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:52,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1848004438, now seen corresponding path program 1 times [2024-11-16 08:16:52,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:52,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606965297] [2024-11-16 08:16:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:52,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:52,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:52,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606965297] [2024-11-16 08:16:52,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606965297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:52,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:52,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:52,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695132608] [2024-11-16 08:16:52,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:52,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:52,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:52,641 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:52,655 INFO L93 Difference]: Finished difference Result 242 states and 354 transitions. [2024-11-16 08:16:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:52,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 08:16:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:52,657 INFO L225 Difference]: With dead ends: 242 [2024-11-16 08:16:52,658 INFO L226 Difference]: Without dead ends: 167 [2024-11-16 08:16:52,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:52,659 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 37 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:52,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 150 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:52,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-16 08:16:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2024-11-16 08:16:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.4355828220858895) internal successors, (234), 163 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2024-11-16 08:16:52,671 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 48 [2024-11-16 08:16:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:52,672 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2024-11-16 08:16:52,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2024-11-16 08:16:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:52,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:52,673 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:52,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:16:52,673 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:52,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1894476176, now seen corresponding path program 1 times [2024-11-16 08:16:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398175974] [2024-11-16 08:16:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:52,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:52,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398175974] [2024-11-16 08:16:52,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398175974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:52,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:52,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:52,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33642245] [2024-11-16 08:16:52,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:52,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:52,736 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:52,746 INFO L93 Difference]: Finished difference Result 309 states and 454 transitions. [2024-11-16 08:16:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:52,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:52,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:52,748 INFO L225 Difference]: With dead ends: 309 [2024-11-16 08:16:52,748 INFO L226 Difference]: Without dead ends: 234 [2024-11-16 08:16:52,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:52,750 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 49 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:52,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 194 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-16 08:16:52,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2024-11-16 08:16:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4521739130434783) internal successors, (334), 230 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2024-11-16 08:16:52,769 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 49 [2024-11-16 08:16:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:52,769 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2024-11-16 08:16:52,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2024-11-16 08:16:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:52,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:52,770 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:52,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:16:52,770 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:52,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash 893066448, now seen corresponding path program 1 times [2024-11-16 08:16:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161365916] [2024-11-16 08:16:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:52,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161365916] [2024-11-16 08:16:52,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161365916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:52,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:52,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:52,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291147815] [2024-11-16 08:16:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:52,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:52,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:52,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:52,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:52,822 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:52,837 INFO L93 Difference]: Finished difference Result 605 states and 896 transitions. [2024-11-16 08:16:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:52,840 INFO L225 Difference]: With dead ends: 605 [2024-11-16 08:16:52,840 INFO L226 Difference]: Without dead ends: 406 [2024-11-16 08:16:52,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:52,841 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 47 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:52,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 200 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-16 08:16:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 403. [2024-11-16 08:16:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.4577114427860696) internal successors, (586), 402 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 586 transitions. [2024-11-16 08:16:52,859 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 586 transitions. Word has length 49 [2024-11-16 08:16:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:52,860 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 586 transitions. [2024-11-16 08:16:52,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 586 transitions. [2024-11-16 08:16:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:52,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:52,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:52,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:16:52,862 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:52,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash 878616592, now seen corresponding path program 1 times [2024-11-16 08:16:52,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:52,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807662058] [2024-11-16 08:16:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:52,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:52,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:52,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807662058] [2024-11-16 08:16:52,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807662058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:52,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:52,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492613128] [2024-11-16 08:16:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:52,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:52,918 INFO L87 Difference]: Start difference. First operand 403 states and 586 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:52,935 INFO L93 Difference]: Finished difference Result 1097 states and 1610 transitions. [2024-11-16 08:16:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:52,938 INFO L225 Difference]: With dead ends: 1097 [2024-11-16 08:16:52,938 INFO L226 Difference]: Without dead ends: 726 [2024-11-16 08:16:52,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:52,940 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 45 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:52,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 202 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-16 08:16:52,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 723. [2024-11-16 08:16:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.443213296398892) internal successors, (1042), 722 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1042 transitions. [2024-11-16 08:16:52,961 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1042 transitions. Word has length 49 [2024-11-16 08:16:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:52,961 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1042 transitions. [2024-11-16 08:16:52,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1042 transitions. [2024-11-16 08:16:52,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:52,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:52,962 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:52,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:16:52,962 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:52,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:52,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1324747952, now seen corresponding path program 1 times [2024-11-16 08:16:52,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:52,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28604382] [2024-11-16 08:16:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:52,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:53,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28604382] [2024-11-16 08:16:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28604382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:53,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:53,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122206259] [2024-11-16 08:16:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:53,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:53,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:53,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:53,010 INFO L87 Difference]: Start difference. First operand 723 states and 1042 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:53,033 INFO L93 Difference]: Finished difference Result 2009 states and 2894 transitions. [2024-11-16 08:16:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:53,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:53,037 INFO L225 Difference]: With dead ends: 2009 [2024-11-16 08:16:53,037 INFO L226 Difference]: Without dead ends: 1318 [2024-11-16 08:16:53,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:53,038 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 43 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:53,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 204 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-11-16 08:16:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1315. [2024-11-16 08:16:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.4140030441400304) internal successors, (1858), 1314 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1858 transitions. [2024-11-16 08:16:53,061 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1858 transitions. Word has length 49 [2024-11-16 08:16:53,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:53,062 INFO L471 AbstractCegarLoop]: Abstraction has 1315 states and 1858 transitions. [2024-11-16 08:16:53,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1858 transitions. [2024-11-16 08:16:53,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 08:16:53,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:53,065 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:53,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 08:16:53,066 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:53,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:53,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1849025007, now seen corresponding path program 1 times [2024-11-16 08:16:53,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:53,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932993039] [2024-11-16 08:16:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:53,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:53,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:53,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932993039] [2024-11-16 08:16:53,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932993039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:53,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:53,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 08:16:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12147339] [2024-11-16 08:16:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:53,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:16:53,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:53,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:16:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:16:53,221 INFO L87 Difference]: Start difference. First operand 1315 states and 1858 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:53,275 INFO L93 Difference]: Finished difference Result 1414 states and 1988 transitions. [2024-11-16 08:16:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:16:53,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 08:16:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:53,280 INFO L225 Difference]: With dead ends: 1414 [2024-11-16 08:16:53,281 INFO L226 Difference]: Without dead ends: 1411 [2024-11-16 08:16:53,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:16:53,282 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:53,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 565 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:53,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2024-11-16 08:16:53,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2024-11-16 08:16:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 1.3801418439716313) internal successors, (1946), 1410 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1946 transitions. [2024-11-16 08:16:53,308 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1946 transitions. Word has length 49 [2024-11-16 08:16:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:53,308 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 1946 transitions. [2024-11-16 08:16:53,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1946 transitions. [2024-11-16 08:16:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:16:53,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:53,309 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:53,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:16:53,309 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:53,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:53,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2053181565, now seen corresponding path program 1 times [2024-11-16 08:16:53,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:53,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013624165] [2024-11-16 08:16:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:53,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:16:53,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:53,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013624165] [2024-11-16 08:16:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013624165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:53,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986893988] [2024-11-16 08:16:53,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:53,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:53,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:53,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:53,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:53,409 INFO L87 Difference]: Start difference. First operand 1411 states and 1946 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:53,545 INFO L93 Difference]: Finished difference Result 6858 states and 9492 transitions. [2024-11-16 08:16:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 08:16:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:53,562 INFO L225 Difference]: With dead ends: 6858 [2024-11-16 08:16:53,562 INFO L226 Difference]: Without dead ends: 5863 [2024-11-16 08:16:53,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:16:53,565 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 347 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:53,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 521 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:53,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2024-11-16 08:16:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 2603. [2024-11-16 08:16:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2603 states, 2602 states have (on average 1.3750960799385088) internal successors, (3578), 2602 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2603 states to 2603 states and 3578 transitions. [2024-11-16 08:16:53,645 INFO L78 Accepts]: Start accepts. Automaton has 2603 states and 3578 transitions. Word has length 68 [2024-11-16 08:16:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:53,646 INFO L471 AbstractCegarLoop]: Abstraction has 2603 states and 3578 transitions. [2024-11-16 08:16:53,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2603 states and 3578 transitions. [2024-11-16 08:16:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:16:53,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:53,648 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:53,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:16:53,648 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:53,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:53,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1051771837, now seen corresponding path program 1 times [2024-11-16 08:16:53,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:53,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678404706] [2024-11-16 08:16:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:53,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 08:16:53,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:53,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678404706] [2024-11-16 08:16:53,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678404706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:53,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:53,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:53,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512846887] [2024-11-16 08:16:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:53,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:53,743 INFO L87 Difference]: Start difference. First operand 2603 states and 3578 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:53,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:53,935 INFO L93 Difference]: Finished difference Result 8234 states and 11388 transitions. [2024-11-16 08:16:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:53,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 08:16:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:53,953 INFO L225 Difference]: With dead ends: 8234 [2024-11-16 08:16:53,954 INFO L226 Difference]: Without dead ends: 6855 [2024-11-16 08:16:53,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:16:53,958 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 344 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:53,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 515 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:16:53,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2024-11-16 08:16:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 4475. [2024-11-16 08:16:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4475 states, 4474 states have (on average 1.3719266875279392) internal successors, (6138), 4474 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6138 transitions. [2024-11-16 08:16:54,081 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6138 transitions. Word has length 68 [2024-11-16 08:16:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:54,081 INFO L471 AbstractCegarLoop]: Abstraction has 4475 states and 6138 transitions. [2024-11-16 08:16:54,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6138 transitions. [2024-11-16 08:16:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:16:54,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:54,082 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:54,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:16:54,083 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:54,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1037321981, now seen corresponding path program 1 times [2024-11-16 08:16:54,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:54,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504433059] [2024-11-16 08:16:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:54,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 08:16:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504433059] [2024-11-16 08:16:54,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504433059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:54,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:54,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054058759] [2024-11-16 08:16:54,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:54,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:54,180 INFO L87 Difference]: Start difference. First operand 4475 states and 6138 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:54,344 INFO L93 Difference]: Finished difference Result 9610 states and 13276 transitions. [2024-11-16 08:16:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:54,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 08:16:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:54,373 INFO L225 Difference]: With dead ends: 9610 [2024-11-16 08:16:54,373 INFO L226 Difference]: Without dead ends: 8231 [2024-11-16 08:16:54,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:16:54,381 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 370 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:54,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 482 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8231 states. [2024-11-16 08:16:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8231 to 5851. [2024-11-16 08:16:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 5850 states have (on average 1.371965811965812) internal successors, (8026), 5850 states have internal predecessors, (8026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 8026 transitions. [2024-11-16 08:16:54,538 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 8026 transitions. Word has length 68 [2024-11-16 08:16:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:54,538 INFO L471 AbstractCegarLoop]: Abstraction has 5851 states and 8026 transitions. [2024-11-16 08:16:54,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 8026 transitions. [2024-11-16 08:16:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 08:16:54,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:54,540 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:54,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 08:16:54,540 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:54,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1166042563, now seen corresponding path program 1 times [2024-11-16 08:16:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:54,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600285624] [2024-11-16 08:16:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 08:16:54,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:54,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600285624] [2024-11-16 08:16:54,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600285624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:54,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:54,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:16:54,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372200544] [2024-11-16 08:16:54,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:54,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:16:54,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:54,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:16:54,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:16:54,639 INFO L87 Difference]: Start difference. First operand 5851 states and 8026 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:54,856 INFO L93 Difference]: Finished difference Result 10986 states and 15164 transitions. [2024-11-16 08:16:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:16:54,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 08:16:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:54,870 INFO L225 Difference]: With dead ends: 10986 [2024-11-16 08:16:54,870 INFO L226 Difference]: Without dead ends: 9607 [2024-11-16 08:16:54,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:16:54,874 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 360 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:54,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 511 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:54,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2024-11-16 08:16:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 7227. [2024-11-16 08:16:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7226 states have (on average 1.371990035981179) internal successors, (9914), 7226 states have internal predecessors, (9914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 9914 transitions. [2024-11-16 08:16:55,071 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 9914 transitions. Word has length 68 [2024-11-16 08:16:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:55,071 INFO L471 AbstractCegarLoop]: Abstraction has 7227 states and 9914 transitions. [2024-11-16 08:16:55,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 9914 transitions. [2024-11-16 08:16:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 08:16:55,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:55,073 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:55,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:16:55,074 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:55,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash -288111681, now seen corresponding path program 1 times [2024-11-16 08:16:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:55,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953662399] [2024-11-16 08:16:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:55,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:55,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:55,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953662399] [2024-11-16 08:16:55,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953662399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:55,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:55,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:55,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036686239] [2024-11-16 08:16:55,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:55,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:55,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:55,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,158 INFO L87 Difference]: Start difference. First operand 7227 states and 9914 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:55,274 INFO L93 Difference]: Finished difference Result 14425 states and 19798 transitions. [2024-11-16 08:16:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:55,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 08:16:55,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:55,284 INFO L225 Difference]: With dead ends: 14425 [2024-11-16 08:16:55,284 INFO L226 Difference]: Without dead ends: 7230 [2024-11-16 08:16:55,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,292 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 36 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:55,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 194 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2024-11-16 08:16:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7227. [2024-11-16 08:16:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7226 states have (on average 1.3548297813451426) internal successors, (9790), 7226 states have internal predecessors, (9790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 9790 transitions. [2024-11-16 08:16:55,471 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 9790 transitions. Word has length 70 [2024-11-16 08:16:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:55,472 INFO L471 AbstractCegarLoop]: Abstraction has 7227 states and 9790 transitions. [2024-11-16 08:16:55,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 9790 transitions. [2024-11-16 08:16:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 08:16:55,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:55,473 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:55,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 08:16:55,473 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:55,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash -570185985, now seen corresponding path program 1 times [2024-11-16 08:16:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518872696] [2024-11-16 08:16:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:55,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518872696] [2024-11-16 08:16:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518872696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:55,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:55,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613392937] [2024-11-16 08:16:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:55,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:55,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,533 INFO L87 Difference]: Start difference. First operand 7227 states and 9790 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:55,588 INFO L93 Difference]: Finished difference Result 9980 states and 13554 transitions. [2024-11-16 08:16:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:55,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 08:16:55,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:55,592 INFO L225 Difference]: With dead ends: 9980 [2024-11-16 08:16:55,593 INFO L226 Difference]: Without dead ends: 2785 [2024-11-16 08:16:55,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,598 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 32 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:55,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 191 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2024-11-16 08:16:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2775. [2024-11-16 08:16:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2774 states have (on average 1.3489545782263879) internal successors, (3742), 2774 states have internal predecessors, (3742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3742 transitions. [2024-11-16 08:16:55,645 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3742 transitions. Word has length 70 [2024-11-16 08:16:55,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:55,645 INFO L471 AbstractCegarLoop]: Abstraction has 2775 states and 3742 transitions. [2024-11-16 08:16:55,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3742 transitions. [2024-11-16 08:16:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 08:16:55,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:55,646 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:55,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 08:16:55,646 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:55,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash -659127007, now seen corresponding path program 1 times [2024-11-16 08:16:55,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:55,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070493881] [2024-11-16 08:16:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:55,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:55,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:55,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070493881] [2024-11-16 08:16:55,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070493881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:55,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:55,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:55,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648052668] [2024-11-16 08:16:55,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:55,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,726 INFO L87 Difference]: Start difference. First operand 2775 states and 3742 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:55,749 INFO L93 Difference]: Finished difference Result 4145 states and 5594 transitions. [2024-11-16 08:16:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:55,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-16 08:16:55,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:55,751 INFO L225 Difference]: With dead ends: 4145 [2024-11-16 08:16:55,751 INFO L226 Difference]: Without dead ends: 1414 [2024-11-16 08:16:55,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,753 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 30 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:55,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 170 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2024-11-16 08:16:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1411. [2024-11-16 08:16:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 1.327659574468085) internal successors, (1872), 1410 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1872 transitions. [2024-11-16 08:16:55,776 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1872 transitions. Word has length 72 [2024-11-16 08:16:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:55,776 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 1872 transitions. [2024-11-16 08:16:55,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1872 transitions. [2024-11-16 08:16:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 08:16:55,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:55,777 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:55,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:16:55,777 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:55,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:55,778 INFO L85 PathProgramCache]: Analyzing trace with hash 85109320, now seen corresponding path program 1 times [2024-11-16 08:16:55,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:55,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377796042] [2024-11-16 08:16:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:55,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377796042] [2024-11-16 08:16:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377796042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:16:55,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:16:55,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 08:16:55,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742537299] [2024-11-16 08:16:55,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:16:55,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:16:55,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:16:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,835 INFO L87 Difference]: Start difference. First operand 1411 states and 1872 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:55,851 INFO L93 Difference]: Finished difference Result 2099 states and 2789 transitions. [2024-11-16 08:16:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:16:55,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 08:16:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:55,852 INFO L225 Difference]: With dead ends: 2099 [2024-11-16 08:16:55,852 INFO L226 Difference]: Without dead ends: 732 [2024-11-16 08:16:55,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 08:16:55,854 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:55,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 155 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:16:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-16 08:16:55,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 729. [2024-11-16 08:16:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.3021978021978022) internal successors, (948), 728 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 948 transitions. [2024-11-16 08:16:55,866 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 948 transitions. Word has length 74 [2024-11-16 08:16:55,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:55,867 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 948 transitions. [2024-11-16 08:16:55,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 948 transitions. [2024-11-16 08:16:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 08:16:55,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:55,868 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:55,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 08:16:55,868 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:55,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash 512342159, now seen corresponding path program 1 times [2024-11-16 08:16:55,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:55,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756736454] [2024-11-16 08:16:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:55,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:56,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:56,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756736454] [2024-11-16 08:16:56,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756736454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:16:56,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691675604] [2024-11-16 08:16:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:56,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:16:56,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:56,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:16:56,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:16:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:56,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 08:16:56,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:16:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:56,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:16:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:57,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691675604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:16:57,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:16:57,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-16 08:16:57,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654767738] [2024-11-16 08:16:57,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:16:57,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 08:16:57,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 08:16:57,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-16 08:16:57,620 INFO L87 Difference]: Start difference. First operand 729 states and 948 transitions. Second operand has 23 states, 23 states have (on average 7.826086956521739) internal successors, (180), 22 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:57,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:16:57,991 INFO L93 Difference]: Finished difference Result 2168 states and 2857 transitions. [2024-11-16 08:16:57,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 08:16:57,992 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.826086956521739) internal successors, (180), 22 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 08:16:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:16:57,995 INFO L225 Difference]: With dead ends: 2168 [2024-11-16 08:16:57,995 INFO L226 Difference]: Without dead ends: 1483 [2024-11-16 08:16:57,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 08:16:57,996 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 550 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:16:57,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 402 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:16:57,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2024-11-16 08:16:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1455. [2024-11-16 08:16:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 1.2950481430536451) internal successors, (1883), 1454 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1883 transitions. [2024-11-16 08:16:58,036 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1883 transitions. Word has length 76 [2024-11-16 08:16:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:16:58,036 INFO L471 AbstractCegarLoop]: Abstraction has 1455 states and 1883 transitions. [2024-11-16 08:16:58,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.826086956521739) internal successors, (180), 22 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:16:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1883 transitions. [2024-11-16 08:16:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 08:16:58,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:16:58,037 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:16:58,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 08:16:58,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:16:58,242 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:16:58,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:16:58,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1040499633, now seen corresponding path program 1 times [2024-11-16 08:16:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:16:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034810712] [2024-11-16 08:16:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:58,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:16:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:58,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:16:58,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034810712] [2024-11-16 08:16:58,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034810712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:16:58,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551132312] [2024-11-16 08:16:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:16:58,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:16:58,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:16:58,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:16:58,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:16:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:16:59,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 08:16:59,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:16:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:59,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:16:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:16:59,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551132312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:16:59,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:16:59,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-16 08:16:59,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520070232] [2024-11-16 08:16:59,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:16:59,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-16 08:16:59,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:16:59,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-16 08:16:59,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2024-11-16 08:16:59,967 INFO L87 Difference]: Start difference. First operand 1455 states and 1883 transitions. Second operand has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 27 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:01,235 INFO L93 Difference]: Finished difference Result 5914 states and 7712 transitions. [2024-11-16 08:17:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 08:17:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 27 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 08:17:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:01,242 INFO L225 Difference]: With dead ends: 5914 [2024-11-16 08:17:01,242 INFO L226 Difference]: Without dead ends: 4503 [2024-11-16 08:17:01,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=504, Invalid=1946, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 08:17:01,245 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 1361 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:01,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 831 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 08:17:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2024-11-16 08:17:01,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 4469. [2024-11-16 08:17:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 1.2880483437779768) internal successors, (5755), 4468 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 5755 transitions. [2024-11-16 08:17:01,336 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 5755 transitions. Word has length 76 [2024-11-16 08:17:01,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:01,336 INFO L471 AbstractCegarLoop]: Abstraction has 4469 states and 5755 transitions. [2024-11-16 08:17:01,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 27 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 5755 transitions. [2024-11-16 08:17:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 08:17:01,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:01,337 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:01,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 08:17:01,538 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,SelfDestructingSolverStorable19 [2024-11-16 08:17:01,539 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:01,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:01,540 INFO L85 PathProgramCache]: Analyzing trace with hash -212525521, now seen corresponding path program 1 times [2024-11-16 08:17:01,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:01,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927576763] [2024-11-16 08:17:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:01,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:01,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927576763] [2024-11-16 08:17:01,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927576763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193038461] [2024-11-16 08:17:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:01,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:01,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:01,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:17:01,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:17:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:01,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 08:17:01,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:02,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193038461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:03,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:03,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 33 [2024-11-16 08:17:03,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098535759] [2024-11-16 08:17:03,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:03,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 08:17:03,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 08:17:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 08:17:03,767 INFO L87 Difference]: Start difference. First operand 4469 states and 5755 transitions. Second operand has 33 states, 33 states have (on average 6.0606060606060606) internal successors, (200), 33 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:07,609 INFO L93 Difference]: Finished difference Result 29106 states and 37665 transitions. [2024-11-16 08:17:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-16 08:17:07,610 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.0606060606060606) internal successors, (200), 33 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 08:17:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:07,665 INFO L225 Difference]: With dead ends: 29106 [2024-11-16 08:17:07,665 INFO L226 Difference]: Without dead ends: 24681 [2024-11-16 08:17:07,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2505 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1823, Invalid=7107, Unknown=0, NotChecked=0, Total=8930 [2024-11-16 08:17:07,673 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 2127 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:07,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2127 Valid, 1426 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 08:17:07,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24681 states. [2024-11-16 08:17:08,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24681 to 23939. [2024-11-16 08:17:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23939 states, 23938 states have (on average 1.275712256663046) internal successors, (30538), 23938 states have internal predecessors, (30538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23939 states to 23939 states and 30538 transitions. [2024-11-16 08:17:08,228 INFO L78 Accepts]: Start accepts. Automaton has 23939 states and 30538 transitions. Word has length 76 [2024-11-16 08:17:08,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:08,228 INFO L471 AbstractCegarLoop]: Abstraction has 23939 states and 30538 transitions. [2024-11-16 08:17:08,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.0606060606060606) internal successors, (200), 33 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 23939 states and 30538 transitions. [2024-11-16 08:17:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 08:17:08,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:08,231 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:08,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 08:17:08,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:08,432 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:08,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1798274550, now seen corresponding path program 1 times [2024-11-16 08:17:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971794590] [2024-11-16 08:17:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971794590] [2024-11-16 08:17:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971794590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198160794] [2024-11-16 08:17:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:09,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:09,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:09,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 08:17:09,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 08:17:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:09,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-16 08:17:09,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:16,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:20,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198160794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:20,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:20,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 21] total 51 [2024-11-16 08:17:20,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425356891] [2024-11-16 08:17:20,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:20,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 08:17:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:20,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 08:17:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=2196, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 08:17:20,201 INFO L87 Difference]: Start difference. First operand 23939 states and 30538 transitions. Second operand has 51 states, 51 states have (on average 3.9411764705882355) internal successors, (201), 51 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:32,638 INFO L93 Difference]: Finished difference Result 49255 states and 62404 transitions. [2024-11-16 08:17:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-16 08:17:32,638 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.9411764705882355) internal successors, (201), 51 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-16 08:17:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:32,680 INFO L225 Difference]: With dead ends: 49255 [2024-11-16 08:17:32,680 INFO L226 Difference]: Without dead ends: 36220 [2024-11-16 08:17:32,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3996 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=2854, Invalid=10952, Unknown=0, NotChecked=0, Total=13806 [2024-11-16 08:17:32,695 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 2132 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2132 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:32,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2132 Valid, 1813 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 08:17:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36220 states. [2024-11-16 08:17:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36220 to 27658. [2024-11-16 08:17:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27658 states, 27657 states have (on average 1.2737100914777453) internal successors, (35227), 27657 states have internal predecessors, (35227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27658 states to 27658 states and 35227 transitions. [2024-11-16 08:17:33,504 INFO L78 Accepts]: Start accepts. Automaton has 27658 states and 35227 transitions. Word has length 78 [2024-11-16 08:17:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:33,505 INFO L471 AbstractCegarLoop]: Abstraction has 27658 states and 35227 transitions. [2024-11-16 08:17:33,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.9411764705882355) internal successors, (201), 51 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 27658 states and 35227 transitions. [2024-11-16 08:17:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 08:17:33,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:33,506 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:33,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 08:17:33,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:33,707 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:33,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash 268475244, now seen corresponding path program 1 times [2024-11-16 08:17:33,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:33,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133565895] [2024-11-16 08:17:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:33,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:34,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133565895] [2024-11-16 08:17:34,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133565895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095774969] [2024-11-16 08:17:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:34,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:34,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:34,158 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) [2024-11-16 08:17:34,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 08:17:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:34,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-16 08:17:34,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:35,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:36,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095774969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:36,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:36,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 16] total 42 [2024-11-16 08:17:36,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006087061] [2024-11-16 08:17:36,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:36,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-16 08:17:36,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:36,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-16 08:17:36,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1539, Unknown=0, NotChecked=0, Total=1722 [2024-11-16 08:17:36,156 INFO L87 Difference]: Start difference. First operand 27658 states and 35227 transitions. Second operand has 42 states, 42 states have (on average 4.928571428571429) internal successors, (207), 42 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:40,269 INFO L93 Difference]: Finished difference Result 50592 states and 64721 transitions. [2024-11-16 08:17:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-16 08:17:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.928571428571429) internal successors, (207), 42 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-16 08:17:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:40,309 INFO L225 Difference]: With dead ends: 50592 [2024-11-16 08:17:40,310 INFO L226 Difference]: Without dead ends: 33971 [2024-11-16 08:17:40,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2961 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2136, Invalid=8166, Unknown=0, NotChecked=0, Total=10302 [2024-11-16 08:17:40,331 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 2244 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:40,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 1980 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 08:17:40,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33971 states. [2024-11-16 08:17:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33971 to 23647. [2024-11-16 08:17:41,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23647 states, 23646 states have (on average 1.2691787194451494) internal successors, (30011), 23646 states have internal predecessors, (30011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23647 states to 23647 states and 30011 transitions. [2024-11-16 08:17:41,108 INFO L78 Accepts]: Start accepts. Automaton has 23647 states and 30011 transitions. Word has length 78 [2024-11-16 08:17:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:41,108 INFO L471 AbstractCegarLoop]: Abstraction has 23647 states and 30011 transitions. [2024-11-16 08:17:41,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.928571428571429) internal successors, (207), 42 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 23647 states and 30011 transitions. [2024-11-16 08:17:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 08:17:41,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:41,113 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:41,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 08:17:41,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-16 08:17:41,314 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:41,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:41,314 INFO L85 PathProgramCache]: Analyzing trace with hash 975905358, now seen corresponding path program 1 times [2024-11-16 08:17:41,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:41,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695689418] [2024-11-16 08:17:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:41,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 08:17:41,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:41,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695689418] [2024-11-16 08:17:41,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695689418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:41,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95898407] [2024-11-16 08:17:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:41,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:41,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:41,413 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) [2024-11-16 08:17:41,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 08:17:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:41,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 08:17:41,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:41,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:41,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95898407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:41,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:41,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2024-11-16 08:17:41,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028975839] [2024-11-16 08:17:41,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:41,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 08:17:41,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:41,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 08:17:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-16 08:17:41,903 INFO L87 Difference]: Start difference. First operand 23647 states and 30011 transitions. Second operand has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:44,730 INFO L93 Difference]: Finished difference Result 106284 states and 132828 transitions. [2024-11-16 08:17:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 08:17:44,731 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 08:17:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:44,805 INFO L225 Difference]: With dead ends: 106284 [2024-11-16 08:17:44,805 INFO L226 Difference]: Without dead ends: 81559 [2024-11-16 08:17:44,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:17:44,823 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 235 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:44,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 923 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:17:44,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81559 states. [2024-11-16 08:17:47,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81559 to 73250. [2024-11-16 08:17:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73250 states, 73249 states have (on average 1.230119182514437) internal successors, (90105), 73249 states have internal predecessors, (90105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73250 states to 73250 states and 90105 transitions. [2024-11-16 08:17:47,757 INFO L78 Accepts]: Start accepts. Automaton has 73250 states and 90105 transitions. Word has length 80 [2024-11-16 08:17:47,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:47,758 INFO L471 AbstractCegarLoop]: Abstraction has 73250 states and 90105 transitions. [2024-11-16 08:17:47,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:47,758 INFO L276 IsEmpty]: Start isEmpty. Operand 73250 states and 90105 transitions. [2024-11-16 08:17:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-16 08:17:47,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:47,764 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:47,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 08:17:47,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:47,965 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:47,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:47,965 INFO L85 PathProgramCache]: Analyzing trace with hash 403365921, now seen corresponding path program 1 times [2024-11-16 08:17:47,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:47,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269554498] [2024-11-16 08:17:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:48,548 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 33 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:48,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:48,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269554498] [2024-11-16 08:17:48,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269554498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:48,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568721912] [2024-11-16 08:17:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:48,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:48,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:48,550 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) [2024-11-16 08:17:48,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 08:17:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:48,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 08:17:48,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:49,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 33 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:50,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568721912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:50,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:50,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-16 08:17:50,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145457717] [2024-11-16 08:17:50,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:50,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 08:17:50,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:50,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 08:17:50,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-16 08:17:50,733 INFO L87 Difference]: Start difference. First operand 73250 states and 90105 transitions. Second operand has 27 states, 27 states have (on average 10.222222222222221) internal successors, (276), 26 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:17:54,066 INFO L93 Difference]: Finished difference Result 117878 states and 145919 transitions. [2024-11-16 08:17:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 08:17:54,066 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.222222222222221) internal successors, (276), 26 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-11-16 08:17:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:17:54,138 INFO L225 Difference]: With dead ends: 117878 [2024-11-16 08:17:54,139 INFO L226 Difference]: Without dead ends: 75420 [2024-11-16 08:17:54,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 08:17:54,161 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 569 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:17:54,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 761 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:17:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75420 states. [2024-11-16 08:17:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75420 to 53916. [2024-11-16 08:17:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53916 states, 53915 states have (on average 1.2208476305295373) internal successors, (65822), 53915 states have internal predecessors, (65822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:56,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53916 states to 53916 states and 65822 transitions. [2024-11-16 08:17:56,614 INFO L78 Accepts]: Start accepts. Automaton has 53916 states and 65822 transitions. Word has length 126 [2024-11-16 08:17:56,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:17:56,615 INFO L471 AbstractCegarLoop]: Abstraction has 53916 states and 65822 transitions. [2024-11-16 08:17:56,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.222222222222221) internal successors, (276), 26 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:17:56,615 INFO L276 IsEmpty]: Start isEmpty. Operand 53916 states and 65822 transitions. [2024-11-16 08:17:56,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-16 08:17:56,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:17:56,621 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:17:56,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 08:17:56,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:56,824 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:17:56,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:17:56,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1231340033, now seen corresponding path program 1 times [2024-11-16 08:17:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:17:56,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341037063] [2024-11-16 08:17:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:56,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:17:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:17:57,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341037063] [2024-11-16 08:17:57,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341037063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:17:57,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561953517] [2024-11-16 08:17:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:17:57,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:17:57,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:17:57,577 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) [2024-11-16 08:17:57,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 08:17:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:17:57,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 08:17:57,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:17:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 49 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:58,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:17:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:17:59,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561953517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:17:59,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:17:59,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2024-11-16 08:17:59,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291305623] [2024-11-16 08:17:59,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:17:59,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 08:17:59,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:17:59,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 08:17:59,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2024-11-16 08:17:59,722 INFO L87 Difference]: Start difference. First operand 53916 states and 65822 transitions. Second operand has 32 states, 32 states have (on average 10.46875) internal successors, (335), 31 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:18:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:18:04,140 INFO L93 Difference]: Finished difference Result 96036 states and 117366 transitions. [2024-11-16 08:18:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-16 08:18:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.46875) internal successors, (335), 31 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-11-16 08:18:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:18:04,191 INFO L225 Difference]: With dead ends: 96036 [2024-11-16 08:18:04,192 INFO L226 Difference]: Without dead ends: 54482 [2024-11-16 08:18:04,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=882, Invalid=3408, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 08:18:04,207 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1180 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 08:18:04,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1219 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 08:18:04,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54482 states. [2024-11-16 08:18:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54482 to 36107. [2024-11-16 08:18:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36107 states, 36106 states have (on average 1.2086079875920899) internal successors, (43638), 36106 states have internal predecessors, (43638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:18:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36107 states to 36107 states and 43638 transitions. [2024-11-16 08:18:05,991 INFO L78 Accepts]: Start accepts. Automaton has 36107 states and 43638 transitions. Word has length 126 [2024-11-16 08:18:05,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:18:05,991 INFO L471 AbstractCegarLoop]: Abstraction has 36107 states and 43638 transitions. [2024-11-16 08:18:05,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.46875) internal successors, (335), 31 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:18:05,992 INFO L276 IsEmpty]: Start isEmpty. Operand 36107 states and 43638 transitions. [2024-11-16 08:18:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-16 08:18:05,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:18:05,995 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:18:06,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 08:18:06,195 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,SelfDestructingSolverStorable25 [2024-11-16 08:18:06,196 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:18:06,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:18:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash 589604320, now seen corresponding path program 1 times [2024-11-16 08:18:06,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:18:06,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101170593] [2024-11-16 08:18:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:18:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:18:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:18:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 25 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:18:06,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:18:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101170593] [2024-11-16 08:18:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101170593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:18:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282019408] [2024-11-16 08:18:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:18:06,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:18:06,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:18:06,765 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) [2024-11-16 08:18:06,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 08:18:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:18:06,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 08:18:06,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:18:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:18:07,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:18:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 25 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:18:09,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282019408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 08:18:09,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 08:18:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2024-11-16 08:18:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578889556] [2024-11-16 08:18:09,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 08:18:09,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 08:18:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:18:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 08:18:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2024-11-16 08:18:09,126 INFO L87 Difference]: Start difference. First operand 36107 states and 43638 transitions. Second operand has 32 states, 32 states have (on average 9.65625) internal successors, (309), 31 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:18:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:18:11,544 INFO L93 Difference]: Finished difference Result 59323 states and 71916 transitions. [2024-11-16 08:18:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-16 08:18:11,545 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.65625) internal successors, (309), 31 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-16 08:18:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:18:11,582 INFO L225 Difference]: With dead ends: 59323 [2024-11-16 08:18:11,582 INFO L226 Difference]: Without dead ends: 37314 [2024-11-16 08:18:11,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=856, Invalid=3050, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 08:18:11,602 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 954 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 08:18:11,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1272 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 08:18:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37314 states. [2024-11-16 08:18:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37314 to 23681. [2024-11-16 08:18:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23681 states, 23680 states have (on average 1.194214527027027) internal successors, (28279), 23680 states have internal predecessors, (28279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:18:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23681 states to 23681 states and 28279 transitions. [2024-11-16 08:18:13,155 INFO L78 Accepts]: Start accepts. Automaton has 23681 states and 28279 transitions. Word has length 127 [2024-11-16 08:18:13,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:18:13,156 INFO L471 AbstractCegarLoop]: Abstraction has 23681 states and 28279 transitions. [2024-11-16 08:18:13,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.65625) internal successors, (309), 31 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 08:18:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand 23681 states and 28279 transitions. [2024-11-16 08:18:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-16 08:18:13,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:18:13,159 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:18:13,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 08:18:13,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 08:18:13,360 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:18:13,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:18:13,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1548761916, now seen corresponding path program 1 times [2024-11-16 08:18:13,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:18:13,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209358512] [2024-11-16 08:18:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:18:13,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:18:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:18:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 43 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:18:14,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:18:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209358512] [2024-11-16 08:18:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209358512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:18:14,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567101747] [2024-11-16 08:18:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:18:14,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:18:14,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:18:14,092 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) [2024-11-16 08:18:14,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 08:18:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:18:14,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-16 08:18:14,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:18:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 43 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:18:16,903 INFO L311 TraceCheckSpWp]: Computing backward predicates...