./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/locks/test_locks_10.c --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/locks/test_locks_10.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 c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:28:16,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:28:16,175 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 22:28:16,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:28:16,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:28:16,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:28:16,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:28:16,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:28:16,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:28:16,208 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:28:16,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:28:16,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:28:16,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:28:16,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:28:16,211 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:28:16,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:28:16,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:28:16,211 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 22:28:16,211 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:28:16,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 22:28:16,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:28:16,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:28:16,213 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:28:16,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:28:16,214 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 22:28:16,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:28:16,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:28:16,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:28:16,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:28:16,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:28:16,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:28:16,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:28:16,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:28:16,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:28:16,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:28:16,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:28:16,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:28:16,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:28:16,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:28:16,217 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:28:16,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:28:16,218 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:28:16,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 22:28:16,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:28:16,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:28:16,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:28:16,447 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:28:16,448 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:28:16,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2023-11-22 22:28:17,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:28:17,623 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:28:17,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c [2023-11-22 22:28:17,632 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2693c67f4/2532265261c746b9b55d63972bf2b560/FLAGb71c5ef75 [2023-11-22 22:28:17,645 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2693c67f4/2532265261c746b9b55d63972bf2b560 [2023-11-22 22:28:17,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:28:17,650 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:28:17,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:28:17,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:28:17,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:28:17,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1158f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17, skipping insertion in model container [2023-11-22 22:28:17,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,681 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:28:17,786 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c[3901,3914] [2023-11-22 22:28:17,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:28:17,797 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:28:17,813 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_10.c[3901,3914] [2023-11-22 22:28:17,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:28:17,834 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:28:17,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17 WrapperNode [2023-11-22 22:28:17,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:28:17,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:28:17,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:28:17,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:28:17,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,861 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 148 [2023-11-22 22:28:17,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:28:17,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:28:17,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:28:17,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:28:17,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,872 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,879 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-22 22:28:17,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:28:17,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:28:17,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:28:17,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:28:17,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (1/1) ... [2023-11-22 22:28:17,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:28:17,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:28:17,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 22:28:17,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 22:28:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:28:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:28:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:28:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 22:28:18,035 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:28:18,037 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:28:18,292 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:28:18,312 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:28:18,312 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 22:28:18,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:18 BoogieIcfgContainer [2023-11-22 22:28:18,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:28:18,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:28:18,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:28:18,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:28:18,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:28:17" (1/3) ... [2023-11-22 22:28:18,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae7e215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:28:18, skipping insertion in model container [2023-11-22 22:28:18,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:28:17" (2/3) ... [2023-11-22 22:28:18,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae7e215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:28:18, skipping insertion in model container [2023-11-22 22:28:18,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:18" (3/3) ... [2023-11-22 22:28:18,319 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2023-11-22 22:28:18,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:28:18,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:28:18,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:28:18,390 INFO L357 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, mHoare=true, 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;@2c4981a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:28:18,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:28:18,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 37 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) [2023-11-22 22:28:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-22 22:28:18,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:18,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:18,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:18,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:18,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1223280439, now seen corresponding path program 1 times [2023-11-22 22:28:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:18,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292279297] [2023-11-22 22:28:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:18,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:18,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292279297] [2023-11-22 22:28:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292279297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:18,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476127062] [2023-11-22 22:28:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:18,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:18,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:18,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:18,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:18,634 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 37 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) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-22 22:28:18,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:18,701 INFO L93 Difference]: Finished difference Result 78 states and 141 transitions. [2023-11-22 22:28:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:18,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-22 22:28:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:18,711 INFO L225 Difference]: With dead ends: 78 [2023-11-22 22:28:18,711 INFO L226 Difference]: Without dead ends: 68 [2023-11-22 22:28:18,713 INFO L412 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 [2023-11-22 22:28:18,716 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 50 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:18,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 130 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-22 22:28:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2023-11-22 22:28:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 45 states have internal predecessors, (85), 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) [2023-11-22 22:28:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 85 transitions. [2023-11-22 22:28:18,742 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 85 transitions. Word has length 16 [2023-11-22 22:28:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:18,743 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 85 transitions. [2023-11-22 22:28:18,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-22 22:28:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 85 transitions. [2023-11-22 22:28:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-22 22:28:18,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:18,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:18,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:28:18,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:18,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 636474425, now seen corresponding path program 1 times [2023-11-22 22:28:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:18,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81910036] [2023-11-22 22:28:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:18,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:18,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81910036] [2023-11-22 22:28:18,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81910036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:18,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:18,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:18,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603476911] [2023-11-22 22:28:18,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:18,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:18,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:18,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:18,889 INFO L87 Difference]: Start difference. First operand 46 states and 85 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-22 22:28:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:18,916 INFO L93 Difference]: Finished difference Result 113 states and 208 transitions. [2023-11-22 22:28:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-22 22:28:18,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:18,917 INFO L225 Difference]: With dead ends: 113 [2023-11-22 22:28:18,918 INFO L226 Difference]: Without dead ends: 68 [2023-11-22 22:28:18,918 INFO L412 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 [2023-11-22 22:28:18,928 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 48 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:18,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 140 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-22 22:28:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-11-22 22:28:18,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 65 states have internal predecessors, (121), 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) [2023-11-22 22:28:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 121 transitions. [2023-11-22 22:28:18,946 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 121 transitions. Word has length 16 [2023-11-22 22:28:18,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:18,946 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 121 transitions. [2023-11-22 22:28:18,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-22 22:28:18,946 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 121 transitions. [2023-11-22 22:28:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-22 22:28:18,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:18,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 22:28:18,948 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:18,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash -732798707, now seen corresponding path program 1 times [2023-11-22 22:28:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:18,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393713614] [2023-11-22 22:28:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393713614] [2023-11-22 22:28:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393713614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129811169] [2023-11-22 22:28:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,013 INFO L87 Difference]: Start difference. First operand 66 states and 121 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-22 22:28:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,031 INFO L93 Difference]: Finished difference Result 104 states and 185 transitions. [2023-11-22 22:28:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-22 22:28:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,032 INFO L225 Difference]: With dead ends: 104 [2023-11-22 22:28:19,032 INFO L226 Difference]: Without dead ends: 71 [2023-11-22 22:28:19,033 INFO L412 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 [2023-11-22 22:28:19,034 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 50 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 157 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-22 22:28:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2023-11-22 22:28:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.8088235294117647) internal successors, (123), 68 states have internal predecessors, (123), 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) [2023-11-22 22:28:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 123 transitions. [2023-11-22 22:28:19,040 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 123 transitions. Word has length 17 [2023-11-22 22:28:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,040 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 123 transitions. [2023-11-22 22:28:19,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-22 22:28:19,040 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 123 transitions. [2023-11-22 22:28:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-22 22:28:19,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 22:28:19,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1743915957, now seen corresponding path program 1 times [2023-11-22 22:28:19,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482581488] [2023-11-22 22:28:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482581488] [2023-11-22 22:28:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482581488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223631170] [2023-11-22 22:28:19,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,076 INFO L87 Difference]: Start difference. First operand 69 states and 123 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-22 22:28:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,087 INFO L93 Difference]: Finished difference Result 132 states and 236 transitions. [2023-11-22 22:28:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-22 22:28:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,089 INFO L225 Difference]: With dead ends: 132 [2023-11-22 22:28:19,089 INFO L226 Difference]: Without dead ends: 130 [2023-11-22 22:28:19,089 INFO L412 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 [2023-11-22 22:28:19,090 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 45 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 122 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-22 22:28:19,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 92. [2023-11-22 22:28:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.8021978021978022) internal successors, (164), 91 states have internal predecessors, (164), 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) [2023-11-22 22:28:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 164 transitions. [2023-11-22 22:28:19,097 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 164 transitions. Word has length 17 [2023-11-22 22:28:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,097 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 164 transitions. [2023-11-22 22:28:19,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-22 22:28:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 164 transitions. [2023-11-22 22:28:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-22 22:28:19,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 22:28:19,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1964245325, now seen corresponding path program 1 times [2023-11-22 22:28:19,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483755908] [2023-11-22 22:28:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483755908] [2023-11-22 22:28:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483755908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608234224] [2023-11-22 22:28:19,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,126 INFO L87 Difference]: Start difference. First operand 92 states and 164 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-22 22:28:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,137 INFO L93 Difference]: Finished difference Result 220 states and 394 transitions. [2023-11-22 22:28:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-22 22:28:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,139 INFO L225 Difference]: With dead ends: 220 [2023-11-22 22:28:19,139 INFO L226 Difference]: Without dead ends: 132 [2023-11-22 22:28:19,139 INFO L412 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 [2023-11-22 22:28:19,140 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 47 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 141 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-22 22:28:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-11-22 22:28:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.7829457364341086) internal successors, (230), 129 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:28:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 230 transitions. [2023-11-22 22:28:19,146 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 230 transitions. Word has length 17 [2023-11-22 22:28:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,146 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 230 transitions. [2023-11-22 22:28:19,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-22 22:28:19,147 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 230 transitions. [2023-11-22 22:28:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 22:28:19,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 22:28:19,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1773393870, now seen corresponding path program 1 times [2023-11-22 22:28:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490903892] [2023-11-22 22:28:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490903892] [2023-11-22 22:28:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490903892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702508758] [2023-11-22 22:28:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,173 INFO L87 Difference]: Start difference. First operand 130 states and 230 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-22 22:28:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,182 INFO L93 Difference]: Finished difference Result 197 states and 345 transitions. [2023-11-22 22:28:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-22 22:28:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,183 INFO L225 Difference]: With dead ends: 197 [2023-11-22 22:28:19,183 INFO L226 Difference]: Without dead ends: 134 [2023-11-22 22:28:19,184 INFO L412 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 [2023-11-22 22:28:19,185 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 49 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 153 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-22 22:28:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2023-11-22 22:28:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.7557251908396947) internal successors, (230), 131 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 22:28:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 230 transitions. [2023-11-22 22:28:19,191 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 230 transitions. Word has length 18 [2023-11-22 22:28:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,192 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 230 transitions. [2023-11-22 22:28:19,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-22 22:28:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 230 transitions. [2023-11-22 22:28:19,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 22:28:19,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 22:28:19,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,194 INFO L85 PathProgramCache]: Analyzing trace with hash 762276620, now seen corresponding path program 1 times [2023-11-22 22:28:19,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244777747] [2023-11-22 22:28:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244777747] [2023-11-22 22:28:19,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244777747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719884407] [2023-11-22 22:28:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,217 INFO L87 Difference]: Start difference. First operand 132 states and 230 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-22 22:28:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,228 INFO L93 Difference]: Finished difference Result 380 states and 664 transitions. [2023-11-22 22:28:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-22 22:28:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,229 INFO L225 Difference]: With dead ends: 380 [2023-11-22 22:28:19,229 INFO L226 Difference]: Without dead ends: 254 [2023-11-22 22:28:19,230 INFO L412 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 [2023-11-22 22:28:19,231 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 47 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 124 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-22 22:28:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2023-11-22 22:28:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.7290836653386454) internal successors, (434), 251 states have internal predecessors, (434), 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) [2023-11-22 22:28:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 434 transitions. [2023-11-22 22:28:19,240 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 434 transitions. Word has length 18 [2023-11-22 22:28:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,240 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 434 transitions. [2023-11-22 22:28:19,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-22 22:28:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 434 transitions. [2023-11-22 22:28:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 22:28:19,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 22:28:19,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1349082634, now seen corresponding path program 1 times [2023-11-22 22:28:19,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901721460] [2023-11-22 22:28:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901721460] [2023-11-22 22:28:19,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901721460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213912092] [2023-11-22 22:28:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,265 INFO L87 Difference]: Start difference. First operand 252 states and 434 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-22 22:28:19,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,274 INFO L93 Difference]: Finished difference Result 320 states and 556 transitions. [2023-11-22 22:28:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-22 22:28:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,276 INFO L225 Difference]: With dead ends: 320 [2023-11-22 22:28:19,276 INFO L226 Difference]: Without dead ends: 318 [2023-11-22 22:28:19,276 INFO L412 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 [2023-11-22 22:28:19,277 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 42 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 167 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-22 22:28:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 252. [2023-11-22 22:28:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.7131474103585658) internal successors, (430), 251 states have internal predecessors, (430), 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) [2023-11-22 22:28:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 430 transitions. [2023-11-22 22:28:19,285 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 430 transitions. Word has length 18 [2023-11-22 22:28:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,285 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 430 transitions. [2023-11-22 22:28:19,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-22 22:28:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 430 transitions. [2023-11-22 22:28:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-22 22:28:19,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 22:28:19,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2139014526, now seen corresponding path program 1 times [2023-11-22 22:28:19,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934772590] [2023-11-22 22:28:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934772590] [2023-11-22 22:28:19,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934772590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322946553] [2023-11-22 22:28:19,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,308 INFO L87 Difference]: Start difference. First operand 252 states and 430 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-22 22:28:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,320 INFO L93 Difference]: Finished difference Result 468 states and 808 transitions. [2023-11-22 22:28:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2023-11-22 22:28:19,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,322 INFO L225 Difference]: With dead ends: 468 [2023-11-22 22:28:19,322 INFO L226 Difference]: Without dead ends: 466 [2023-11-22 22:28:19,323 INFO L412 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 [2023-11-22 22:28:19,323 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 39 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-22 22:28:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 352. [2023-11-22 22:28:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.6809116809116809) internal successors, (590), 351 states have internal predecessors, (590), 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) [2023-11-22 22:28:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 590 transitions. [2023-11-22 22:28:19,331 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 590 transitions. Word has length 19 [2023-11-22 22:28:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,331 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 590 transitions. [2023-11-22 22:28:19,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-22 22:28:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 590 transitions. [2023-11-22 22:28:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-22 22:28:19,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 22:28:19,333 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1569146756, now seen corresponding path program 1 times [2023-11-22 22:28:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174529618] [2023-11-22 22:28:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174529618] [2023-11-22 22:28:19,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174529618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245012482] [2023-11-22 22:28:19,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,359 INFO L87 Difference]: Start difference. First operand 352 states and 590 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-22 22:28:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,376 INFO L93 Difference]: Finished difference Result 836 states and 1408 transitions. [2023-11-22 22:28:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2023-11-22 22:28:19,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,378 INFO L225 Difference]: With dead ends: 836 [2023-11-22 22:28:19,378 INFO L226 Difference]: Without dead ends: 490 [2023-11-22 22:28:19,379 INFO L412 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 [2023-11-22 22:28:19,380 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 45 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 143 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-22 22:28:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 488. [2023-11-22 22:28:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.6632443531827514) internal successors, (810), 487 states have internal predecessors, (810), 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) [2023-11-22 22:28:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 810 transitions. [2023-11-22 22:28:19,411 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 810 transitions. Word has length 19 [2023-11-22 22:28:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,412 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 810 transitions. [2023-11-22 22:28:19,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-22 22:28:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 810 transitions. [2023-11-22 22:28:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-22 22:28:19,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 22:28:19,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1884726495, now seen corresponding path program 1 times [2023-11-22 22:28:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523531994] [2023-11-22 22:28:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523531994] [2023-11-22 22:28:19,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523531994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759837602] [2023-11-22 22:28:19,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,442 INFO L87 Difference]: Start difference. First operand 488 states and 810 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-22 22:28:19,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,458 INFO L93 Difference]: Finished difference Result 740 states and 1224 transitions. [2023-11-22 22:28:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-22 22:28:19,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,461 INFO L225 Difference]: With dead ends: 740 [2023-11-22 22:28:19,461 INFO L226 Difference]: Without dead ends: 502 [2023-11-22 22:28:19,461 INFO L412 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 [2023-11-22 22:28:19,462 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 47 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 145 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-11-22 22:28:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2023-11-22 22:28:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6392785571142285) internal successors, (818), 499 states have internal predecessors, (818), 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) [2023-11-22 22:28:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 818 transitions. [2023-11-22 22:28:19,473 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 818 transitions. Word has length 20 [2023-11-22 22:28:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,473 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 818 transitions. [2023-11-22 22:28:19,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-22 22:28:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 818 transitions. [2023-11-22 22:28:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-22 22:28:19,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 22:28:19,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1399123551, now seen corresponding path program 1 times [2023-11-22 22:28:19,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958042200] [2023-11-22 22:28:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958042200] [2023-11-22 22:28:19,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958042200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199255765] [2023-11-22 22:28:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,512 INFO L87 Difference]: Start difference. First operand 500 states and 818 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-22 22:28:19,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,533 INFO L93 Difference]: Finished difference Result 904 states and 1500 transitions. [2023-11-22 22:28:19,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-22 22:28:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,537 INFO L225 Difference]: With dead ends: 904 [2023-11-22 22:28:19,537 INFO L226 Difference]: Without dead ends: 902 [2023-11-22 22:28:19,542 INFO L412 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 [2023-11-22 22:28:19,543 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 36 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 116 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-22 22:28:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 708. [2023-11-22 22:28:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.5983026874115982) internal successors, (1130), 707 states have internal predecessors, (1130), 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) [2023-11-22 22:28:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1130 transitions. [2023-11-22 22:28:19,559 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1130 transitions. Word has length 20 [2023-11-22 22:28:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,559 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1130 transitions. [2023-11-22 22:28:19,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-22 22:28:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1130 transitions. [2023-11-22 22:28:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-22 22:28:19,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 22:28:19,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 812317537, now seen corresponding path program 1 times [2023-11-22 22:28:19,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768072146] [2023-11-22 22:28:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768072146] [2023-11-22 22:28:19,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768072146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975160180] [2023-11-22 22:28:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,602 INFO L87 Difference]: Start difference. First operand 708 states and 1130 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-22 22:28:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,626 INFO L93 Difference]: Finished difference Result 1656 states and 2652 transitions. [2023-11-22 22:28:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-22 22:28:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,629 INFO L225 Difference]: With dead ends: 1656 [2023-11-22 22:28:19,630 INFO L226 Difference]: Without dead ends: 966 [2023-11-22 22:28:19,631 INFO L412 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 [2023-11-22 22:28:19,633 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 44 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 144 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-11-22 22:28:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2023-11-22 22:28:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 1.5804776739356179) internal successors, (1522), 963 states have internal predecessors, (1522), 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) [2023-11-22 22:28:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1522 transitions. [2023-11-22 22:28:19,656 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1522 transitions. Word has length 20 [2023-11-22 22:28:19,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,656 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1522 transitions. [2023-11-22 22:28:19,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-22 22:28:19,657 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1522 transitions. [2023-11-22 22:28:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-22 22:28:19,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 22:28:19,659 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,659 INFO L85 PathProgramCache]: Analyzing trace with hash 423371833, now seen corresponding path program 1 times [2023-11-22 22:28:19,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763026787] [2023-11-22 22:28:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763026787] [2023-11-22 22:28:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763026787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37708766] [2023-11-22 22:28:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,682 INFO L87 Difference]: Start difference. First operand 964 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-22 22:28:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,700 INFO L93 Difference]: Finished difference Result 1448 states and 2276 transitions. [2023-11-22 22:28:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-11-22 22:28:19,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,703 INFO L225 Difference]: With dead ends: 1448 [2023-11-22 22:28:19,704 INFO L226 Difference]: Without dead ends: 982 [2023-11-22 22:28:19,704 INFO L412 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 [2023-11-22 22:28:19,705 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 46 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 141 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-11-22 22:28:19,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 980. [2023-11-22 22:28:19,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.5546475995914197) internal successors, (1522), 979 states have internal predecessors, (1522), 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) [2023-11-22 22:28:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1522 transitions. [2023-11-22 22:28:19,732 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1522 transitions. Word has length 21 [2023-11-22 22:28:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,733 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1522 transitions. [2023-11-22 22:28:19,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-22 22:28:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1522 transitions. [2023-11-22 22:28:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-22 22:28:19,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 22:28:19,734 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash -587745417, now seen corresponding path program 1 times [2023-11-22 22:28:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623172872] [2023-11-22 22:28:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623172872] [2023-11-22 22:28:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623172872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786405073] [2023-11-22 22:28:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,761 INFO L87 Difference]: Start difference. First operand 980 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-22 22:28:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,785 INFO L93 Difference]: Finished difference Result 1736 states and 2740 transitions. [2023-11-22 22:28:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-11-22 22:28:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,790 INFO L225 Difference]: With dead ends: 1736 [2023-11-22 22:28:19,790 INFO L226 Difference]: Without dead ends: 1734 [2023-11-22 22:28:19,791 INFO L412 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 [2023-11-22 22:28:19,791 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 114 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-11-22 22:28:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1412. [2023-11-22 22:28:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 1.5095676824946846) internal successors, (2130), 1411 states have internal predecessors, (2130), 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) [2023-11-22 22:28:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2130 transitions. [2023-11-22 22:28:19,816 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2130 transitions. Word has length 21 [2023-11-22 22:28:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,816 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 2130 transitions. [2023-11-22 22:28:19,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-22 22:28:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2130 transitions. [2023-11-22 22:28:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-22 22:28:19,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 22:28:19,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 22:28:19,818 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1174551431, now seen corresponding path program 1 times [2023-11-22 22:28:19,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2339325] [2023-11-22 22:28:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2339325] [2023-11-22 22:28:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2339325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797043296] [2023-11-22 22:28:19,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,834 INFO L87 Difference]: Start difference. First operand 1412 states and 2130 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-22 22:28:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,867 INFO L93 Difference]: Finished difference Result 3272 states and 4948 transitions. [2023-11-22 22:28:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-11-22 22:28:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:19,872 INFO L225 Difference]: With dead ends: 3272 [2023-11-22 22:28:19,872 INFO L226 Difference]: Without dead ends: 1894 [2023-11-22 22:28:19,873 INFO L412 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 [2023-11-22 22:28:19,874 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 43 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:19,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 145 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2023-11-22 22:28:19,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1892. [2023-11-22 22:28:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 1.4902168164992067) internal successors, (2818), 1891 states have internal predecessors, (2818), 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) [2023-11-22 22:28:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2818 transitions. [2023-11-22 22:28:19,939 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2818 transitions. Word has length 21 [2023-11-22 22:28:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:19,940 INFO L495 AbstractCegarLoop]: Abstraction has 1892 states and 2818 transitions. [2023-11-22 22:28:19,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-22 22:28:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2818 transitions. [2023-11-22 22:28:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-22 22:28:19,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:19,944 INFO L195 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] [2023-11-22 22:28:19,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 22:28:19,944 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:19,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1040023690, now seen corresponding path program 1 times [2023-11-22 22:28:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121585056] [2023-11-22 22:28:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:19,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:19,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121585056] [2023-11-22 22:28:19,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121585056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:19,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:19,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474063096] [2023-11-22 22:28:19,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:19,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:19,961 INFO L87 Difference]: Start difference. First operand 1892 states and 2818 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-22 22:28:19,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:19,996 INFO L93 Difference]: Finished difference Result 2840 states and 4212 transitions. [2023-11-22 22:28:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:19,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-22 22:28:19,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:20,001 INFO L225 Difference]: With dead ends: 2840 [2023-11-22 22:28:20,003 INFO L226 Difference]: Without dead ends: 1926 [2023-11-22 22:28:20,005 INFO L412 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 [2023-11-22 22:28:20,006 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 45 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:20,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 137 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:20,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2023-11-22 22:28:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1924. [2023-11-22 22:28:20,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 1.4654186167446699) internal successors, (2818), 1923 states have internal predecessors, (2818), 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) [2023-11-22 22:28:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2818 transitions. [2023-11-22 22:28:20,051 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2818 transitions. Word has length 22 [2023-11-22 22:28:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:20,051 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 2818 transitions. [2023-11-22 22:28:20,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-22 22:28:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2818 transitions. [2023-11-22 22:28:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-22 22:28:20,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:20,053 INFO L195 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] [2023-11-22 22:28:20,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-22 22:28:20,053 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:20,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:20,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2051140940, now seen corresponding path program 1 times [2023-11-22 22:28:20,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:20,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246696400] [2023-11-22 22:28:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:20,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246696400] [2023-11-22 22:28:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246696400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:20,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385641907] [2023-11-22 22:28:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:20,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:20,075 INFO L87 Difference]: Start difference. First operand 1924 states and 2818 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-22 22:28:20,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:20,134 INFO L93 Difference]: Finished difference Result 3336 states and 4964 transitions. [2023-11-22 22:28:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-22 22:28:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:20,141 INFO L225 Difference]: With dead ends: 3336 [2023-11-22 22:28:20,141 INFO L226 Difference]: Without dead ends: 3334 [2023-11-22 22:28:20,143 INFO L412 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 [2023-11-22 22:28:20,144 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 30 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:20,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 112 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:20,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2023-11-22 22:28:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2820. [2023-11-22 22:28:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2819 states have (on average 1.4196523589925505) internal successors, (4002), 2819 states have internal predecessors, (4002), 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) [2023-11-22 22:28:20,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 4002 transitions. [2023-11-22 22:28:20,214 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 4002 transitions. Word has length 22 [2023-11-22 22:28:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:20,214 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 4002 transitions. [2023-11-22 22:28:20,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-22 22:28:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 4002 transitions. [2023-11-22 22:28:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-22 22:28:20,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:20,217 INFO L195 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] [2023-11-22 22:28:20,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 22:28:20,217 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:20,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1657020342, now seen corresponding path program 1 times [2023-11-22 22:28:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:20,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421251976] [2023-11-22 22:28:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:20,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:20,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:20,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421251976] [2023-11-22 22:28:20,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421251976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:20,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:20,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:20,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620655346] [2023-11-22 22:28:20,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:20,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:20,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:20,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:20,240 INFO L87 Difference]: Start difference. First operand 2820 states and 4002 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-22 22:28:20,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:20,304 INFO L93 Difference]: Finished difference Result 6472 states and 9188 transitions. [2023-11-22 22:28:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:20,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-22 22:28:20,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:20,313 INFO L225 Difference]: With dead ends: 6472 [2023-11-22 22:28:20,314 INFO L226 Difference]: Without dead ends: 3718 [2023-11-22 22:28:20,316 INFO L412 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 [2023-11-22 22:28:20,317 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:20,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 146 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2023-11-22 22:28:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3716. [2023-11-22 22:28:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3716 states, 3715 states have (on average 1.3959623149394347) internal successors, (5186), 3715 states have internal predecessors, (5186), 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) [2023-11-22 22:28:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3716 states to 3716 states and 5186 transitions. [2023-11-22 22:28:20,424 INFO L78 Accepts]: Start accepts. Automaton has 3716 states and 5186 transitions. Word has length 22 [2023-11-22 22:28:20,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:20,424 INFO L495 AbstractCegarLoop]: Abstraction has 3716 states and 5186 transitions. [2023-11-22 22:28:20,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-22 22:28:20,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3716 states and 5186 transitions. [2023-11-22 22:28:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 22:28:20,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:20,427 INFO L195 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] [2023-11-22 22:28:20,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-22 22:28:20,428 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:20,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash 839355694, now seen corresponding path program 1 times [2023-11-22 22:28:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:20,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416779229] [2023-11-22 22:28:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:20,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416779229] [2023-11-22 22:28:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416779229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:20,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737550211] [2023-11-22 22:28:20,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:20,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:20,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:20,456 INFO L87 Difference]: Start difference. First operand 3716 states and 5186 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2023-11-22 22:28:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:20,508 INFO L93 Difference]: Finished difference Result 5576 states and 7748 transitions. [2023-11-22 22:28:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 [2023-11-22 22:28:20,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:20,519 INFO L225 Difference]: With dead ends: 5576 [2023-11-22 22:28:20,520 INFO L226 Difference]: Without dead ends: 3782 [2023-11-22 22:28:20,522 INFO L412 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 [2023-11-22 22:28:20,523 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 44 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:20,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 133 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2023-11-22 22:28:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3780. [2023-11-22 22:28:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3779 states have (on average 1.372320719767134) internal successors, (5186), 3779 states have internal predecessors, (5186), 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) [2023-11-22 22:28:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5186 transitions. [2023-11-22 22:28:20,633 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5186 transitions. Word has length 23 [2023-11-22 22:28:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:20,634 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 5186 transitions. [2023-11-22 22:28:20,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2023-11-22 22:28:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5186 transitions. [2023-11-22 22:28:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 22:28:20,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:20,638 INFO L195 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] [2023-11-22 22:28:20,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 22:28:20,638 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:20,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:20,638 INFO L85 PathProgramCache]: Analyzing trace with hash -171761556, now seen corresponding path program 1 times [2023-11-22 22:28:20,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:20,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856151288] [2023-11-22 22:28:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:20,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856151288] [2023-11-22 22:28:20,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856151288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:20,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:20,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:20,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559866225] [2023-11-22 22:28:20,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:20,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:20,659 INFO L87 Difference]: Start difference. First operand 3780 states and 5186 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2023-11-22 22:28:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:20,732 INFO L93 Difference]: Finished difference Result 6408 states and 8900 transitions. [2023-11-22 22:28:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 [2023-11-22 22:28:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:20,758 INFO L225 Difference]: With dead ends: 6408 [2023-11-22 22:28:20,759 INFO L226 Difference]: Without dead ends: 6406 [2023-11-22 22:28:20,761 INFO L412 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 [2023-11-22 22:28:20,761 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 27 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:20,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 110 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2023-11-22 22:28:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 5636. [2023-11-22 22:28:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5635 states have (on average 1.329192546583851) internal successors, (7490), 5635 states have internal predecessors, (7490), 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) [2023-11-22 22:28:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 7490 transitions. [2023-11-22 22:28:20,904 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 7490 transitions. Word has length 23 [2023-11-22 22:28:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:20,904 INFO L495 AbstractCegarLoop]: Abstraction has 5636 states and 7490 transitions. [2023-11-22 22:28:20,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2023-11-22 22:28:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 7490 transitions. [2023-11-22 22:28:20,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 22:28:20,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:20,910 INFO L195 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] [2023-11-22 22:28:20,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 22:28:20,910 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:20,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash -758567570, now seen corresponding path program 1 times [2023-11-22 22:28:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:20,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873349596] [2023-11-22 22:28:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:20,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:20,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:20,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873349596] [2023-11-22 22:28:20,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873349596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:20,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:20,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:20,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427114384] [2023-11-22 22:28:20,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:20,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:20,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:20,927 INFO L87 Difference]: Start difference. First operand 5636 states and 7490 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2023-11-22 22:28:21,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:21,053 INFO L93 Difference]: Finished difference Result 12808 states and 16964 transitions. [2023-11-22 22:28:21,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:21,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 [2023-11-22 22:28:21,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:21,062 INFO L225 Difference]: With dead ends: 12808 [2023-11-22 22:28:21,063 INFO L226 Difference]: Without dead ends: 7302 [2023-11-22 22:28:21,068 INFO L412 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 [2023-11-22 22:28:21,070 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 41 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:21,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 147 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2023-11-22 22:28:21,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 7300. [2023-11-22 22:28:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7300 states, 7299 states have (on average 1.297986025482943) internal successors, (9474), 7299 states have internal predecessors, (9474), 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) [2023-11-22 22:28:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7300 states to 7300 states and 9474 transitions. [2023-11-22 22:28:21,231 INFO L78 Accepts]: Start accepts. Automaton has 7300 states and 9474 transitions. Word has length 23 [2023-11-22 22:28:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:21,232 INFO L495 AbstractCegarLoop]: Abstraction has 7300 states and 9474 transitions. [2023-11-22 22:28:21,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2023-11-22 22:28:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 7300 states and 9474 transitions. [2023-11-22 22:28:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 22:28:21,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:21,237 INFO L195 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] [2023-11-22 22:28:21,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 22:28:21,238 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:21,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:21,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1029425205, now seen corresponding path program 1 times [2023-11-22 22:28:21,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:21,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179530958] [2023-11-22 22:28:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:21,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179530958] [2023-11-22 22:28:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179530958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:21,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:21,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431519903] [2023-11-22 22:28:21,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:21,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:21,254 INFO L87 Difference]: Start difference. First operand 7300 states and 9474 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-22 22:28:21,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:21,361 INFO L93 Difference]: Finished difference Result 10952 states and 14148 transitions. [2023-11-22 22:28:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:21,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-22 22:28:21,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:21,369 INFO L225 Difference]: With dead ends: 10952 [2023-11-22 22:28:21,369 INFO L226 Difference]: Without dead ends: 7430 [2023-11-22 22:28:21,372 INFO L412 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 [2023-11-22 22:28:21,373 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 43 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:21,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 129 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:21,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7430 states. [2023-11-22 22:28:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7430 to 7428. [2023-11-22 22:28:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 7427 states have (on average 1.2756159956913962) internal successors, (9474), 7427 states have internal predecessors, (9474), 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) [2023-11-22 22:28:21,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 9474 transitions. [2023-11-22 22:28:21,495 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 9474 transitions. Word has length 24 [2023-11-22 22:28:21,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:21,495 INFO L495 AbstractCegarLoop]: Abstraction has 7428 states and 9474 transitions. [2023-11-22 22:28:21,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-22 22:28:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 9474 transitions. [2023-11-22 22:28:21,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 22:28:21,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:21,501 INFO L195 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] [2023-11-22 22:28:21,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 22:28:21,501 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:21,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:21,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2040542455, now seen corresponding path program 1 times [2023-11-22 22:28:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:21,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190448316] [2023-11-22 22:28:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:21,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190448316] [2023-11-22 22:28:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190448316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:21,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:21,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:21,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021908430] [2023-11-22 22:28:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:21,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:21,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:21,519 INFO L87 Difference]: Start difference. First operand 7428 states and 9474 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-22 22:28:21,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:21,664 INFO L93 Difference]: Finished difference Result 12296 states and 15748 transitions. [2023-11-22 22:28:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:21,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-22 22:28:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:21,680 INFO L225 Difference]: With dead ends: 12296 [2023-11-22 22:28:21,681 INFO L226 Difference]: Without dead ends: 12294 [2023-11-22 22:28:21,684 INFO L412 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 [2023-11-22 22:28:21,684 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 24 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:21,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12294 states. [2023-11-22 22:28:21,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12294 to 11268. [2023-11-22 22:28:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11268 states, 11267 states have (on average 1.2384840685186829) internal successors, (13954), 11267 states have internal predecessors, (13954), 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) [2023-11-22 22:28:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11268 states to 11268 states and 13954 transitions. [2023-11-22 22:28:21,884 INFO L78 Accepts]: Start accepts. Automaton has 11268 states and 13954 transitions. Word has length 24 [2023-11-22 22:28:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:21,884 INFO L495 AbstractCegarLoop]: Abstraction has 11268 states and 13954 transitions. [2023-11-22 22:28:21,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-22 22:28:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 11268 states and 13954 transitions. [2023-11-22 22:28:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 22:28:21,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:21,894 INFO L195 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] [2023-11-22 22:28:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 22:28:21,894 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:21,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1667618827, now seen corresponding path program 1 times [2023-11-22 22:28:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248995243] [2023-11-22 22:28:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:21,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248995243] [2023-11-22 22:28:21,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248995243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:21,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:21,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376594273] [2023-11-22 22:28:21,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:21,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:21,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:21,910 INFO L87 Difference]: Start difference. First operand 11268 states and 13954 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-22 22:28:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:22,113 INFO L93 Difference]: Finished difference Result 25352 states and 31108 transitions. [2023-11-22 22:28:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:22,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-22 22:28:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:22,133 INFO L225 Difference]: With dead ends: 25352 [2023-11-22 22:28:22,133 INFO L226 Difference]: Without dead ends: 14342 [2023-11-22 22:28:22,142 INFO L412 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 [2023-11-22 22:28:22,143 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 40 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:22,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 148 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14342 states. [2023-11-22 22:28:22,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14342 to 14340. [2023-11-22 22:28:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14340 states, 14339 states have (on average 1.1963177348490133) internal successors, (17154), 14339 states have internal predecessors, (17154), 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) [2023-11-22 22:28:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 17154 transitions. [2023-11-22 22:28:22,545 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 17154 transitions. Word has length 24 [2023-11-22 22:28:22,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:22,545 INFO L495 AbstractCegarLoop]: Abstraction has 14340 states and 17154 transitions. [2023-11-22 22:28:22,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-22 22:28:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 17154 transitions. [2023-11-22 22:28:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-22 22:28:22,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:22,556 INFO L195 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] [2023-11-22 22:28:22,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-22 22:28:22,556 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:22,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:22,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1167909411, now seen corresponding path program 1 times [2023-11-22 22:28:22,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:22,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628017044] [2023-11-22 22:28:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:22,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:22,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628017044] [2023-11-22 22:28:22,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628017044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:22,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:22,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:22,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409984680] [2023-11-22 22:28:22,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:22,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:22,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:22,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:22,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:22,571 INFO L87 Difference]: Start difference. First operand 14340 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-22 22:28:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:22,717 INFO L93 Difference]: Finished difference Result 21512 states and 25604 transitions. [2023-11-22 22:28:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:22,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-22 22:28:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:22,736 INFO L225 Difference]: With dead ends: 21512 [2023-11-22 22:28:22,737 INFO L226 Difference]: Without dead ends: 14598 [2023-11-22 22:28:22,744 INFO L412 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 [2023-11-22 22:28:22,745 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 42 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:22,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 125 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14598 states. [2023-11-22 22:28:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14598 to 14596. [2023-11-22 22:28:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14596 states, 14595 states have (on average 1.175334018499486) internal successors, (17154), 14595 states have internal predecessors, (17154), 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) [2023-11-22 22:28:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14596 states to 14596 states and 17154 transitions. [2023-11-22 22:28:23,043 INFO L78 Accepts]: Start accepts. Automaton has 14596 states and 17154 transitions. Word has length 25 [2023-11-22 22:28:23,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:23,043 INFO L495 AbstractCegarLoop]: Abstraction has 14596 states and 17154 transitions. [2023-11-22 22:28:23,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-22 22:28:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 14596 states and 17154 transitions. [2023-11-22 22:28:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-22 22:28:23,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:23,052 INFO L195 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] [2023-11-22 22:28:23,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-22 22:28:23,053 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:23,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash 156792161, now seen corresponding path program 1 times [2023-11-22 22:28:23,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:23,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010562370] [2023-11-22 22:28:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:23,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:23,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:23,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010562370] [2023-11-22 22:28:23,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010562370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:23,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:23,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:23,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559015730] [2023-11-22 22:28:23,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:23,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:23,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:23,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:23,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:23,069 INFO L87 Difference]: Start difference. First operand 14596 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-22 22:28:23,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:23,325 INFO L93 Difference]: Finished difference Result 23558 states and 27395 transitions. [2023-11-22 22:28:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:23,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-22 22:28:23,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:23,353 INFO L225 Difference]: With dead ends: 23558 [2023-11-22 22:28:23,353 INFO L226 Difference]: Without dead ends: 23556 [2023-11-22 22:28:23,357 INFO L412 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 [2023-11-22 22:28:23,358 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 20 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:23,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:23,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23556 states. [2023-11-22 22:28:23,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23556 to 22532. [2023-11-22 22:28:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22532 states, 22531 states have (on average 1.147663219564156) internal successors, (25858), 22531 states have internal predecessors, (25858), 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) [2023-11-22 22:28:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22532 states to 22532 states and 25858 transitions. [2023-11-22 22:28:23,730 INFO L78 Accepts]: Start accepts. Automaton has 22532 states and 25858 transitions. Word has length 25 [2023-11-22 22:28:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:23,730 INFO L495 AbstractCegarLoop]: Abstraction has 22532 states and 25858 transitions. [2023-11-22 22:28:23,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-22 22:28:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 22532 states and 25858 transitions. [2023-11-22 22:28:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-22 22:28:23,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:28:23,748 INFO L195 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] [2023-11-22 22:28:23,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-22 22:28:23,748 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:28:23,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:28:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash -430013853, now seen corresponding path program 1 times [2023-11-22 22:28:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:28:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523171919] [2023-11-22 22:28:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:28:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:28:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:28:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 22:28:23,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:28:23,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523171919] [2023-11-22 22:28:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523171919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:28:23,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:28:23,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:28:23,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261599177] [2023-11-22 22:28:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:28:23,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:28:23,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:28:23,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:28:23,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:28:23,763 INFO L87 Difference]: Start difference. First operand 22532 states and 25858 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-22 22:28:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:28:24,116 INFO L93 Difference]: Finished difference Result 50180 states and 56578 transitions. [2023-11-22 22:28:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:28:24,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-22 22:28:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:28:24,117 INFO L225 Difference]: With dead ends: 50180 [2023-11-22 22:28:24,117 INFO L226 Difference]: Without dead ends: 0 [2023-11-22 22:28:24,141 INFO L412 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 [2023-11-22 22:28:24,142 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:28:24,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 147 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:28:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-22 22:28:24,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-22 22:28:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-22 22:28:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-22 22:28:24,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2023-11-22 22:28:24,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:28:24,143 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-22 22:28:24,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-22 22:28:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-22 22:28:24,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-22 22:28:24,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-22 22:28:24,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-22 22:28:24,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-22 22:28:24,157 INFO L899 garLoopResultBuilder]: For program point L126(line 126) no Hoare annotation was computed. [2023-11-22 22:28:24,158 INFO L899 garLoopResultBuilder]: For program point L151(line 151) no Hoare annotation was computed. [2023-11-22 22:28:24,158 INFO L899 garLoopResultBuilder]: For program point L110-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,158 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 6 165) no Hoare annotation was computed. [2023-11-22 22:28:24,158 INFO L899 garLoopResultBuilder]: For program point L135-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,158 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2023-11-22 22:28:24,159 INFO L899 garLoopResultBuilder]: For program point L136(line 136) no Hoare annotation was computed. [2023-11-22 22:28:24,159 INFO L899 garLoopResultBuilder]: For program point L161(lines 7 165) no Hoare annotation was computed. [2023-11-22 22:28:24,159 INFO L899 garLoopResultBuilder]: For program point L120-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,159 INFO L899 garLoopResultBuilder]: For program point L145-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,159 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-22 22:28:24,159 INFO L899 garLoopResultBuilder]: For program point L104-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,159 INFO L899 garLoopResultBuilder]: For program point L96-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,159 INFO L899 garLoopResultBuilder]: For program point L121(line 121) no Hoare annotation was computed. [2023-11-22 22:28:24,160 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,160 INFO L899 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2023-11-22 22:28:24,160 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,160 INFO L899 garLoopResultBuilder]: For program point L72-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,160 INFO L899 garLoopResultBuilder]: For program point L130-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,161 INFO L902 garLoopResultBuilder]: At program point L155-1(lines 41 160) the Hoare annotation is: true [2023-11-22 22:28:24,161 INFO L899 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2023-11-22 22:28:24,161 INFO L899 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2023-11-22 22:28:24,161 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 163) no Hoare annotation was computed. [2023-11-22 22:28:24,161 INFO L899 garLoopResultBuilder]: For program point L115-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,161 INFO L899 garLoopResultBuilder]: For program point L140-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,161 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point L141(line 141) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point L100-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point L125-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point L92-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 7 165) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point L150-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,162 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2023-11-22 22:28:24,163 INFO L899 garLoopResultBuilder]: For program point L76-1(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,163 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2023-11-22 22:28:24,163 INFO L899 garLoopResultBuilder]: For program point L68-2(lines 41 160) no Hoare annotation was computed. [2023-11-22 22:28:24,165 INFO L445 BasicCegarLoop]: Path program 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] [2023-11-22 22:28:24,167 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-22 22:28:24,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 10:28:24 BoogieIcfgContainer [2023-11-22 22:28:24,176 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-22 22:28:24,176 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-22 22:28:24,176 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-22 22:28:24,176 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-22 22:28:24,177 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:28:18" (3/4) ... [2023-11-22 22:28:24,178 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-22 22:28:24,186 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-22 22:28:24,186 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-22 22:28:24,186 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-22 22:28:24,187 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-22 22:28:24,264 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-22 22:28:24,264 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-22 22:28:24,265 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-22 22:28:24,265 INFO L158 Benchmark]: Toolchain (without parser) took 6615.44ms. Allocated memory was 134.2MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 106.2MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 620.2MB. Max. memory is 16.1GB. [2023-11-22 22:28:24,266 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 22:28:24,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.42ms. Allocated memory is still 134.2MB. Free memory was 105.9MB in the beginning and 97.7MB in the end (delta: 8.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2023-11-22 22:28:24,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.18ms. Allocated memory is still 134.2MB. Free memory was 97.7MB in the beginning and 96.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 22:28:24,268 INFO L158 Benchmark]: Boogie Preprocessor took 26.49ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 22:28:24,268 INFO L158 Benchmark]: RCFGBuilder took 423.37ms. Allocated memory is still 134.2MB. Free memory was 94.2MB in the beginning and 78.9MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-22 22:28:24,268 INFO L158 Benchmark]: TraceAbstraction took 5861.84ms. Allocated memory was 134.2MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 78.2MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 588.0MB. Max. memory is 16.1GB. [2023-11-22 22:28:24,268 INFO L158 Benchmark]: Witness Printer took 88.51ms. Allocated memory is still 1.8GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-22 22:28:24,270 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.42ms. Allocated memory is still 134.2MB. Free memory was 105.9MB in the beginning and 97.7MB in the end (delta: 8.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.18ms. Allocated memory is still 134.2MB. Free memory was 97.7MB in the beginning and 96.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.49ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 423.37ms. Allocated memory is still 134.2MB. Free memory was 94.2MB in the beginning and 78.9MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5861.84ms. Allocated memory was 134.2MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 78.2MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 588.0MB. Max. memory is 16.1GB. * Witness Printer took 88.51ms. Allocated memory is still 1.8GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 163]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1147 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1147 mSDsluCounter, 3747 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1503 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 2244 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22532occurred in iteration=27, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 28 MinimizatonAttempts, 4124 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1026 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 580 NumberOfCodeBlocks, 580 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 552 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-22 22:28:24,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE