./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/heapsort.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/heapsort.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e7c8e5dc2a9e8f11b25d1bb9948f05f37b9553e3dc9f8bd8213088dea43cb37 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:16:47,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:16:47,748 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:16:47,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:16:47,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:16:47,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:16:47,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:16:47,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:16:47,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:16:47,789 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:16:47,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:16:47,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:16:47,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:16:47,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:16:47,792 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:16:47,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:16:47,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:16:47,793 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:16:47,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:16:47,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:16:47,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:16:47,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:16:47,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:16:47,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:16:47,798 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:16:47,798 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:16:47,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:16:47,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:16:47,799 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:16:47,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:16:47,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:16:47,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:16:47,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:16:47,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:16:47,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:16:47,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:16:47,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:16:47,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:16:47,801 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:16:47,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:16:47,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:16:47,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:16:47,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7c8e5dc2a9e8f11b25d1bb9948f05f37b9553e3dc9f8bd8213088dea43cb37 [2024-11-09 22:16:48,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:16:48,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:16:48,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:16:48,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:16:48,078 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:16:48,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/heapsort.i [2024-11-09 22:16:49,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:16:49,754 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:16:49,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/heapsort.i [2024-11-09 22:16:49,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098305a59/100ced3e09a8469694ea6fccd9c4ccde/FLAG4c67a3b2d [2024-11-09 22:16:50,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098305a59/100ced3e09a8469694ea6fccd9c4ccde [2024-11-09 22:16:50,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:16:50,116 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:16:50,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:16:50,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:16:50,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:16:50,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,128 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192d73f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50, skipping insertion in model container [2024-11-09 22:16:50,128 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:16:50,359 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/heapsort.i[893,906] [2024-11-09 22:16:50,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:16:50,403 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:16:50,415 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/heapsort.i[893,906] [2024-11-09 22:16:50,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:16:50,453 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:16:50,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50 WrapperNode [2024-11-09 22:16:50,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:16:50,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:16:50,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:16:50,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:16:50,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,497 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2024-11-09 22:16:50,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:16:50,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:16:50,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:16:50,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:16:50,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,511 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,526 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 22:16:50,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,530 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:16:50,534 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:16:50,534 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:16:50,535 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:16:50,537 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (1/1) ... [2024-11-09 22:16:50,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:16:50,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:50,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 22:16:50,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 22:16:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:16:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:16:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:16:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:16:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:16:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:16:50,669 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:16:50,670 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:16:50,853 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-09 22:16:50,853 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:16:50,868 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:16:50,868 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:16:50,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:16:50 BoogieIcfgContainer [2024-11-09 22:16:50,869 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:16:50,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:16:50,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:16:50,877 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:16:50,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:16:50" (1/3) ... [2024-11-09 22:16:50,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11155c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:16:50, skipping insertion in model container [2024-11-09 22:16:50,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:50" (2/3) ... [2024-11-09 22:16:50,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11155c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:16:50, skipping insertion in model container [2024-11-09 22:16:50,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:16:50" (3/3) ... [2024-11-09 22:16:50,880 INFO L112 eAbstractionObserver]: Analyzing ICFG heapsort.i [2024-11-09 22:16:50,896 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:16:50,896 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:16:50,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:16:50,952 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@186b1667, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:16:50,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:16:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 22:16:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 22:16:50,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:50,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:50,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:50,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash -624744072, now seen corresponding path program 1 times [2024-11-09 22:16:50,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:50,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646139974] [2024-11-09 22:16:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:50,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646139974] [2024-11-09 22:16:51,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646139974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:51,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:51,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:16:51,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811311302] [2024-11-09 22:16:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:51,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:16:51,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:51,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:16:51,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:16:51,181 INFO L87 Difference]: Start difference. First operand has 43 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:51,203 INFO L93 Difference]: Finished difference Result 81 states and 139 transitions. [2024-11-09 22:16:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:16:51,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 22:16:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:51,212 INFO L225 Difference]: With dead ends: 81 [2024-11-09 22:16:51,213 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 22:16:51,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:16:51,219 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:51,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:51,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 22:16:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-09 22:16:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 22:16:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 57 transitions. [2024-11-09 22:16:51,256 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 57 transitions. Word has length 13 [2024-11-09 22:16:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:51,257 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 57 transitions. [2024-11-09 22:16:51,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 57 transitions. [2024-11-09 22:16:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 22:16:51,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:51,259 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:51,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:16:51,259 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:51,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash 366336039, now seen corresponding path program 1 times [2024-11-09 22:16:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:51,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809156186] [2024-11-09 22:16:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:51,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:51,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809156186] [2024-11-09 22:16:51,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809156186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:51,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:51,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:16:51,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328687972] [2024-11-09 22:16:51,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:51,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:16:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:51,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:16:51,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:16:51,508 INFO L87 Difference]: Start difference. First operand 38 states and 57 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:51,660 INFO L93 Difference]: Finished difference Result 69 states and 104 transitions. [2024-11-09 22:16:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:16:51,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 22:16:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:51,662 INFO L225 Difference]: With dead ends: 69 [2024-11-09 22:16:51,662 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 22:16:51,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:51,664 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 20 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:51,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 175 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:51,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 22:16:51,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 42. [2024-11-09 22:16:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 22:16:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2024-11-09 22:16:51,681 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 14 [2024-11-09 22:16:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:51,682 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2024-11-09 22:16:51,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2024-11-09 22:16:51,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 22:16:51,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:51,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:51,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:16:51,686 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:51,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:51,687 INFO L85 PathProgramCache]: Analyzing trace with hash 398659274, now seen corresponding path program 1 times [2024-11-09 22:16:51,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:51,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49951690] [2024-11-09 22:16:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49951690] [2024-11-09 22:16:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49951690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:16:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595159627] [2024-11-09 22:16:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:51,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:16:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:51,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:16:51,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:16:51,805 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:51,889 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2024-11-09 22:16:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:16:51,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 22:16:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:51,890 INFO L225 Difference]: With dead ends: 51 [2024-11-09 22:16:51,892 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 22:16:51,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:51,894 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 17 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:51,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 154 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:51,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 22:16:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2024-11-09 22:16:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 22:16:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2024-11-09 22:16:51,909 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 14 [2024-11-09 22:16:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:51,909 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2024-11-09 22:16:51,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2024-11-09 22:16:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 22:16:51,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:51,912 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:51,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:16:51,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:51,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1819958093, now seen corresponding path program 1 times [2024-11-09 22:16:51,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:51,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469968380] [2024-11-09 22:16:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469968380] [2024-11-09 22:16:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469968380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:52,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 22:16:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833703487] [2024-11-09 22:16:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:52,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:16:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:16:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:52,045 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:52,226 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2024-11-09 22:16:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:16:52,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 22:16:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:52,228 INFO L225 Difference]: With dead ends: 88 [2024-11-09 22:16:52,228 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 22:16:52,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:16:52,231 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 31 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:52,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 224 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 22:16:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2024-11-09 22:16:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-09 22:16:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2024-11-09 22:16:52,246 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 14 [2024-11-09 22:16:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:52,247 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2024-11-09 22:16:52,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2024-11-09 22:16:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:16:52,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:52,249 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:52,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 22:16:52,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:52,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:52,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1858042122, now seen corresponding path program 1 times [2024-11-09 22:16:52,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:52,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896573313] [2024-11-09 22:16:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:52,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:52,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896573313] [2024-11-09 22:16:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896573313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:52,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:52,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:16:52,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511337452] [2024-11-09 22:16:52,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:52,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:16:52,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:16:52,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:16:52,428 INFO L87 Difference]: Start difference. First operand 74 states and 107 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:52,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:52,642 INFO L93 Difference]: Finished difference Result 112 states and 163 transitions. [2024-11-09 22:16:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:16:52,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 22:16:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:52,645 INFO L225 Difference]: With dead ends: 112 [2024-11-09 22:16:52,646 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 22:16:52,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:16:52,648 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 47 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:52,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 233 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:16:52,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 22:16:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2024-11-09 22:16:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 58 states have (on average 1.293103448275862) internal successors, (75), 59 states have internal predecessors, (75), 40 states have call successors, (40), 5 states have call predecessors, (40), 5 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 22:16:52,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 155 transitions. [2024-11-09 22:16:52,693 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 155 transitions. Word has length 19 [2024-11-09 22:16:52,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:52,693 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 155 transitions. [2024-11-09 22:16:52,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:52,694 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 155 transitions. [2024-11-09 22:16:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:16:52,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:52,696 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:52,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 22:16:52,698 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:52,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash -606752569, now seen corresponding path program 1 times [2024-11-09 22:16:52,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:52,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005167099] [2024-11-09 22:16:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:52,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:52,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005167099] [2024-11-09 22:16:52,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005167099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:52,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:52,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:16:52,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138421393] [2024-11-09 22:16:52,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:52,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:16:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:52,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:16:52,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:16:52,797 INFO L87 Difference]: Start difference. First operand 104 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:52,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:52,876 INFO L93 Difference]: Finished difference Result 111 states and 161 transitions. [2024-11-09 22:16:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:16:52,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 22:16:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:52,881 INFO L225 Difference]: With dead ends: 111 [2024-11-09 22:16:52,881 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 22:16:52,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:52,884 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 15 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:52,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 153 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 22:16:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-09 22:16:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 61 states have (on average 1.278688524590164) internal successors, (78), 62 states have internal predecessors, (78), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 22:16:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 158 transitions. [2024-11-09 22:16:52,920 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 158 transitions. Word has length 19 [2024-11-09 22:16:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:52,921 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 158 transitions. [2024-11-09 22:16:52,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 158 transitions. [2024-11-09 22:16:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:16:52,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:52,922 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:52,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 22:16:52,922 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:52,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:52,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1802272604, now seen corresponding path program 1 times [2024-11-09 22:16:52,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:52,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767142269] [2024-11-09 22:16:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:52,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:52,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:53,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767142269] [2024-11-09 22:16:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767142269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:53,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 22:16:53,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074091315] [2024-11-09 22:16:53,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:53,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:16:53,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:16:53,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:53,003 INFO L87 Difference]: Start difference. First operand 108 states and 158 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:53,194 INFO L93 Difference]: Finished difference Result 165 states and 248 transitions. [2024-11-09 22:16:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:16:53,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 22:16:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:53,197 INFO L225 Difference]: With dead ends: 165 [2024-11-09 22:16:53,197 INFO L226 Difference]: Without dead ends: 162 [2024-11-09 22:16:53,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:16:53,198 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 26 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:53,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 257 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-09 22:16:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 136. [2024-11-09 22:16:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 74 states have internal predecessors, (90), 58 states have call successors, (58), 7 states have call predecessors, (58), 7 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-09 22:16:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 206 transitions. [2024-11-09 22:16:53,244 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 206 transitions. Word has length 19 [2024-11-09 22:16:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:53,244 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 206 transitions. [2024-11-09 22:16:53,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 206 transitions. [2024-11-09 22:16:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:16:53,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:53,246 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:53,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 22:16:53,249 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:53,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2031429997, now seen corresponding path program 1 times [2024-11-09 22:16:53,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:53,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962908811] [2024-11-09 22:16:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:53,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962908811] [2024-11-09 22:16:53,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962908811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:53,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:53,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 22:16:53,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298018188] [2024-11-09 22:16:53,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:53,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:16:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:53,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:16:53,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:53,316 INFO L87 Difference]: Start difference. First operand 136 states and 206 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:53,488 INFO L93 Difference]: Finished difference Result 197 states and 299 transitions. [2024-11-09 22:16:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:16:53,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 22:16:53,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:53,491 INFO L225 Difference]: With dead ends: 197 [2024-11-09 22:16:53,491 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 22:16:53,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:16:53,492 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 32 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:53,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 206 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 22:16:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 168. [2024-11-09 22:16:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 89 states have internal predecessors, (105), 76 states have call successors, (76), 9 states have call predecessors, (76), 9 states have return successors, (76), 69 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-09 22:16:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 257 transitions. [2024-11-09 22:16:53,540 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 257 transitions. Word has length 19 [2024-11-09 22:16:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:53,540 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 257 transitions. [2024-11-09 22:16:53,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 257 transitions. [2024-11-09 22:16:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:16:53,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:53,543 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:53,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 22:16:53,544 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:53,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1347507945, now seen corresponding path program 1 times [2024-11-09 22:16:53,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:53,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504786236] [2024-11-09 22:16:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:53,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504786236] [2024-11-09 22:16:53,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504786236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:53,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:53,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 22:16:53,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907486166] [2024-11-09 22:16:53,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:53,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 22:16:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 22:16:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:16:53,575 INFO L87 Difference]: Start difference. First operand 168 states and 257 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:53,635 INFO L93 Difference]: Finished difference Result 320 states and 492 transitions. [2024-11-09 22:16:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 22:16:53,636 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 22:16:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:53,638 INFO L225 Difference]: With dead ends: 320 [2024-11-09 22:16:53,638 INFO L226 Difference]: Without dead ends: 240 [2024-11-09 22:16:53,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:16:53,641 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 11 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:53,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 130 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-09 22:16:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 200. [2024-11-09 22:16:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 96 states have (on average 1.2916666666666667) internal successors, (124), 104 states have internal predecessors, (124), 94 states have call successors, (94), 9 states have call predecessors, (94), 9 states have return successors, (94), 86 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-09 22:16:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 312 transitions. [2024-11-09 22:16:53,700 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 312 transitions. Word has length 19 [2024-11-09 22:16:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:53,701 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 312 transitions. [2024-11-09 22:16:53,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 22:16:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 312 transitions. [2024-11-09 22:16:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 22:16:53,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:53,702 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:53,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 22:16:53,703 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:53,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash -734759259, now seen corresponding path program 1 times [2024-11-09 22:16:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:53,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456139365] [2024-11-09 22:16:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:16:53,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:53,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456139365] [2024-11-09 22:16:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456139365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:53,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:53,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 22:16:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719268420] [2024-11-09 22:16:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:53,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:16:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:53,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:16:53,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:53,794 INFO L87 Difference]: Start difference. First operand 200 states and 312 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:16:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:53,976 INFO L93 Difference]: Finished difference Result 287 states and 459 transitions. [2024-11-09 22:16:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:16:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-11-09 22:16:53,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:53,980 INFO L225 Difference]: With dead ends: 287 [2024-11-09 22:16:53,980 INFO L226 Difference]: Without dead ends: 284 [2024-11-09 22:16:53,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:16:53,982 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 45 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:53,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 253 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:53,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-09 22:16:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 252. [2024-11-09 22:16:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 135 states have internal predecessors, (161), 120 states have call successors, (120), 10 states have call predecessors, (120), 10 states have return successors, (120), 106 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-09 22:16:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 401 transitions. [2024-11-09 22:16:54,065 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 401 transitions. Word has length 26 [2024-11-09 22:16:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:54,066 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 401 transitions. [2024-11-09 22:16:54,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:16:54,066 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 401 transitions. [2024-11-09 22:16:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 22:16:54,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:54,067 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:54,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 22:16:54,067 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:54,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:54,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1371679368, now seen corresponding path program 1 times [2024-11-09 22:16:54,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:54,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079897926] [2024-11-09 22:16:54,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:54,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 22:16:54,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:54,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079897926] [2024-11-09 22:16:54,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079897926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:54,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:54,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:16:54,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104946250] [2024-11-09 22:16:54,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:54,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:16:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:54,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:16:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:16:54,160 INFO L87 Difference]: Start difference. First operand 252 states and 401 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:16:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:54,443 INFO L93 Difference]: Finished difference Result 587 states and 937 transitions. [2024-11-09 22:16:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:16:54,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-09 22:16:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:54,447 INFO L225 Difference]: With dead ends: 587 [2024-11-09 22:16:54,447 INFO L226 Difference]: Without dead ends: 399 [2024-11-09 22:16:54,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:16:54,449 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 83 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:54,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 147 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:16:54,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-09 22:16:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 254. [2024-11-09 22:16:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 123 states have (on average 1.3170731707317074) internal successors, (162), 137 states have internal predecessors, (162), 120 states have call successors, (120), 10 states have call predecessors, (120), 10 states have return successors, (120), 106 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-09 22:16:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 402 transitions. [2024-11-09 22:16:54,521 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 402 transitions. Word has length 30 [2024-11-09 22:16:54,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:54,522 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 402 transitions. [2024-11-09 22:16:54,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 22:16:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 402 transitions. [2024-11-09 22:16:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:16:54,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:54,523 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:54,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 22:16:54,523 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:54,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:54,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2064024884, now seen corresponding path program 1 times [2024-11-09 22:16:54,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:54,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071380976] [2024-11-09 22:16:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:16:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:16:54,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:54,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071380976] [2024-11-09 22:16:54,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071380976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:54,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:54,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:16:54,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571184045] [2024-11-09 22:16:54,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:54,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:16:54,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:16:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:16:54,660 INFO L87 Difference]: Start difference. First operand 254 states and 402 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:16:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:54,942 INFO L93 Difference]: Finished difference Result 430 states and 707 transitions. [2024-11-09 22:16:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:16:54,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2024-11-09 22:16:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:54,946 INFO L225 Difference]: With dead ends: 430 [2024-11-09 22:16:54,947 INFO L226 Difference]: Without dead ends: 427 [2024-11-09 22:16:54,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:16:54,948 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 57 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:54,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 286 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:16:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-09 22:16:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 380. [2024-11-09 22:16:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 173 states have (on average 1.3583815028901733) internal successors, (235), 198 states have internal predecessors, (235), 195 states have call successors, (195), 11 states have call predecessors, (195), 11 states have return successors, (195), 170 states have call predecessors, (195), 195 states have call successors, (195) [2024-11-09 22:16:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 625 transitions. [2024-11-09 22:16:55,045 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 625 transitions. Word has length 31 [2024-11-09 22:16:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:55,045 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 625 transitions. [2024-11-09 22:16:55,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:16:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 625 transitions. [2024-11-09 22:16:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:16:55,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:55,047 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:55,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 22:16:55,047 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:55,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1976205867, now seen corresponding path program 1 times [2024-11-09 22:16:55,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:55,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371297985] [2024-11-09 22:16:55,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:55,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:16:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:16:55,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:55,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371297985] [2024-11-09 22:16:55,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371297985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:55,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:55,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:16:55,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836177238] [2024-11-09 22:16:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:55,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:16:55,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:55,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:16:55,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:16:55,148 INFO L87 Difference]: Start difference. First operand 380 states and 625 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:16:55,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:55,383 INFO L93 Difference]: Finished difference Result 450 states and 737 transitions. [2024-11-09 22:16:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:16:55,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2024-11-09 22:16:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:55,388 INFO L225 Difference]: With dead ends: 450 [2024-11-09 22:16:55,388 INFO L226 Difference]: Without dead ends: 447 [2024-11-09 22:16:55,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:16:55,389 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 81 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:55,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 213 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:55,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-09 22:16:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 387. [2024-11-09 22:16:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 176 states have (on average 1.3522727272727273) internal successors, (238), 201 states have internal predecessors, (238), 198 states have call successors, (198), 12 states have call predecessors, (198), 12 states have return successors, (198), 173 states have call predecessors, (198), 198 states have call successors, (198) [2024-11-09 22:16:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 634 transitions. [2024-11-09 22:16:55,480 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 634 transitions. Word has length 31 [2024-11-09 22:16:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:55,482 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 634 transitions. [2024-11-09 22:16:55,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:16:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 634 transitions. [2024-11-09 22:16:55,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 22:16:55,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:55,483 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:55,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 22:16:55,485 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:55,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2141027902, now seen corresponding path program 1 times [2024-11-09 22:16:55,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:55,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052101135] [2024-11-09 22:16:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:55,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 22:16:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 22:16:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:16:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 22:16:55,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:55,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052101135] [2024-11-09 22:16:55,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052101135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:55,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:55,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:16:55,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803179366] [2024-11-09 22:16:55,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:55,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:16:55,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:16:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:16:55,603 INFO L87 Difference]: Start difference. First operand 387 states and 634 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:16:55,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:55,855 INFO L93 Difference]: Finished difference Result 449 states and 715 transitions. [2024-11-09 22:16:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:16:55,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-11-09 22:16:55,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:55,860 INFO L225 Difference]: With dead ends: 449 [2024-11-09 22:16:55,860 INFO L226 Difference]: Without dead ends: 446 [2024-11-09 22:16:55,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:16:55,861 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 37 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:55,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 269 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-09 22:16:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 317. [2024-11-09 22:16:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 156 states have (on average 1.3333333333333333) internal successors, (208), 171 states have internal predecessors, (208), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 133 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-09 22:16:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 504 transitions. [2024-11-09 22:16:55,946 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 504 transitions. Word has length 41 [2024-11-09 22:16:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:55,946 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 504 transitions. [2024-11-09 22:16:55,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 22:16:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 504 transitions. [2024-11-09 22:16:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 22:16:55,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:55,947 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:55,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 22:16:55,948 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:55,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash 76734672, now seen corresponding path program 1 times [2024-11-09 22:16:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213023941] [2024-11-09 22:16:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-09 22:16:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 22:16:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:16:56,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213023941] [2024-11-09 22:16:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213023941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:56,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:56,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:16:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779548856] [2024-11-09 22:16:56,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:56,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:16:56,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:16:56,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:16:56,031 INFO L87 Difference]: Start difference. First operand 317 states and 504 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:16:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:56,213 INFO L93 Difference]: Finished difference Result 349 states and 545 transitions. [2024-11-09 22:16:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:16:56,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-09 22:16:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:56,217 INFO L225 Difference]: With dead ends: 349 [2024-11-09 22:16:56,217 INFO L226 Difference]: Without dead ends: 346 [2024-11-09 22:16:56,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:16:56,218 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 30 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:56,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 174 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-09 22:16:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 321. [2024-11-09 22:16:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 159 states have (on average 1.3270440251572326) internal successors, (211), 174 states have internal predecessors, (211), 148 states have call successors, (148), 13 states have call predecessors, (148), 13 states have return successors, (148), 133 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-09 22:16:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 507 transitions. [2024-11-09 22:16:56,293 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 507 transitions. Word has length 43 [2024-11-09 22:16:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:56,293 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 507 transitions. [2024-11-09 22:16:56,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:16:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 507 transitions. [2024-11-09 22:16:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 22:16:56,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:56,295 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:56,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 22:16:56,295 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:56,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:56,295 INFO L85 PathProgramCache]: Analyzing trace with hash 666488744, now seen corresponding path program 1 times [2024-11-09 22:16:56,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:56,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515444170] [2024-11-09 22:16:56,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:56,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-09 22:16:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 22:16:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-09 22:16:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 22:16:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 22:16:56,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515444170] [2024-11-09 22:16:56,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515444170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:56,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:56,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 22:16:56,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178219218] [2024-11-09 22:16:56,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:56,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:16:56,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:16:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:16:56,379 INFO L87 Difference]: Start difference. First operand 321 states and 507 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 22:16:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:56,551 INFO L93 Difference]: Finished difference Result 378 states and 593 transitions. [2024-11-09 22:16:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:16:56,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 55 [2024-11-09 22:16:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:56,555 INFO L225 Difference]: With dead ends: 378 [2024-11-09 22:16:56,555 INFO L226 Difference]: Without dead ends: 375 [2024-11-09 22:16:56,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:16:56,556 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 44 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:56,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 220 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:56,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-09 22:16:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 325. [2024-11-09 22:16:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 162 states have (on average 1.3209876543209877) internal successors, (214), 177 states have internal predecessors, (214), 148 states have call successors, (148), 14 states have call predecessors, (148), 14 states have return successors, (148), 133 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-09 22:16:56,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 510 transitions. [2024-11-09 22:16:56,636 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 510 transitions. Word has length 55 [2024-11-09 22:16:56,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:56,636 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 510 transitions. [2024-11-09 22:16:56,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 22:16:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 510 transitions. [2024-11-09 22:16:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 22:16:56,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:56,638 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:56,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 22:16:56,638 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:56,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1227164545, now seen corresponding path program 1 times [2024-11-09 22:16:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:56,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986119917] [2024-11-09 22:16:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:56,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:16:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:16:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:16:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 22:16:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-09 22:16:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 22:16:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-09 22:16:56,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986119917] [2024-11-09 22:16:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986119917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:56,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430787424] [2024-11-09 22:16:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:56,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:56,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:56,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:16:56,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:16:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 22:16:56,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 22:16:56,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:16:56,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430787424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:56,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:16:56,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2024-11-09 22:16:56,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790707716] [2024-11-09 22:16:56,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:56,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:16:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:16:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:16:56,972 INFO L87 Difference]: Start difference. First operand 325 states and 510 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 22:16:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:57,246 INFO L93 Difference]: Finished difference Result 710 states and 1116 transitions. [2024-11-09 22:16:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:16:57,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2024-11-09 22:16:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:57,251 INFO L225 Difference]: With dead ends: 710 [2024-11-09 22:16:57,251 INFO L226 Difference]: Without dead ends: 412 [2024-11-09 22:16:57,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:16:57,253 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 37 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:57,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 228 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-09 22:16:57,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2024-11-09 22:16:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 183 states have (on average 1.3169398907103824) internal successors, (241), 201 states have internal predecessors, (241), 178 states have call successors, (178), 14 states have call predecessors, (178), 14 states have return successors, (178), 160 states have call predecessors, (178), 178 states have call successors, (178) [2024-11-09 22:16:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 597 transitions. [2024-11-09 22:16:57,347 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 597 transitions. Word has length 62 [2024-11-09 22:16:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:57,348 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 597 transitions. [2024-11-09 22:16:57,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 22:16:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 597 transitions. [2024-11-09 22:16:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 22:16:57,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:57,350 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:57,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:16:57,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 22:16:57,554 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:57,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:57,554 INFO L85 PathProgramCache]: Analyzing trace with hash -31090422, now seen corresponding path program 1 times [2024-11-09 22:16:57,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:57,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198256735] [2024-11-09 22:16:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:57,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 22:16:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 22:16:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:16:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 22:16:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 22:16:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 22:16:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 22:16:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-09 22:16:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:16:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 22:16:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-09 22:16:57,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:57,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198256735] [2024-11-09 22:16:57,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198256735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:57,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911881705] [2024-11-09 22:16:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:57,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:57,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:57,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:16:57,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:16:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:16:57,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-09 22:16:58,026 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:16:58,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911881705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:58,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:16:58,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-09 22:16:58,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268175242] [2024-11-09 22:16:58,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:58,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:16:58,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:58,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:16:58,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:16:58,028 INFO L87 Difference]: Start difference. First operand 376 states and 597 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 22:16:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:58,460 INFO L93 Difference]: Finished difference Result 682 states and 1051 transitions. [2024-11-09 22:16:58,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 22:16:58,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 84 [2024-11-09 22:16:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:58,464 INFO L225 Difference]: With dead ends: 682 [2024-11-09 22:16:58,464 INFO L226 Difference]: Without dead ends: 309 [2024-11-09 22:16:58,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:16:58,467 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 55 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:58,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 245 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:16:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-09 22:16:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 250. [2024-11-09 22:16:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 142 states have internal predecessors, (169), 102 states have call successors, (102), 13 states have call predecessors, (102), 13 states have return successors, (102), 94 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-09 22:16:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 373 transitions. [2024-11-09 22:16:58,533 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 373 transitions. Word has length 84 [2024-11-09 22:16:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:58,534 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 373 transitions. [2024-11-09 22:16:58,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 22:16:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 373 transitions. [2024-11-09 22:16:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 22:16:58,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:58,535 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:58,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:16:58,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 22:16:58,736 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:58,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 406919081, now seen corresponding path program 1 times [2024-11-09 22:16:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946840781] [2024-11-09 22:16:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-09 22:16:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 22:16:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:16:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 22:16:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 22:16:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 22:16:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 22:16:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-09 22:16:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:16:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 22:16:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-09 22:16:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946840781] [2024-11-09 22:16:58,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946840781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:58,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940023739] [2024-11-09 22:16:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:58,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:58,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:16:58,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:16:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:16:58,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-09 22:16:59,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:16:59,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940023739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:59,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:16:59,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-09 22:16:59,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272668299] [2024-11-09 22:16:59,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:59,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:16:59,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:59,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:16:59,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:16:59,130 INFO L87 Difference]: Start difference. First operand 250 states and 373 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-09 22:16:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:59,342 INFO L93 Difference]: Finished difference Result 469 states and 693 transitions. [2024-11-09 22:16:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:16:59,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 84 [2024-11-09 22:16:59,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:59,344 INFO L225 Difference]: With dead ends: 469 [2024-11-09 22:16:59,345 INFO L226 Difference]: Without dead ends: 208 [2024-11-09 22:16:59,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:16:59,348 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 23 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:59,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 172 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-09 22:16:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 196. [2024-11-09 22:16:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 113 states have internal predecessors, (131), 76 states have call successors, (76), 13 states have call predecessors, (76), 13 states have return successors, (76), 69 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-09 22:16:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 283 transitions. [2024-11-09 22:16:59,385 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 283 transitions. Word has length 84 [2024-11-09 22:16:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:59,386 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 283 transitions. [2024-11-09 22:16:59,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-09 22:16:59,387 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 283 transitions. [2024-11-09 22:16:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 22:16:59,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:59,390 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:59,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:16:59,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:59,591 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:59,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash -10532862, now seen corresponding path program 1 times [2024-11-09 22:16:59,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395664380] [2024-11-09 22:16:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:59,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:16:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:16:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-09 22:16:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 22:16:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-09 22:16:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 22:16:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 22:16:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-09 22:16:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-09 22:16:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 22:16:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-09 22:16:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 22:16:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-09 22:16:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395664380] [2024-11-09 22:16:59,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395664380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558630842] [2024-11-09 22:16:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:59,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:59,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:59,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:16:59,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:16:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:59,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 22:16:59,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 152 proven. 3 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-09 22:16:59,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-09 22:17:00,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558630842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:00,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:00,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 16 [2024-11-09 22:17:00,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387118321] [2024-11-09 22:17:00,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:00,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:17:00,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:00,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:17:00,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-09 22:17:00,037 INFO L87 Difference]: Start difference. First operand 196 states and 283 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-09 22:17:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:01,368 INFO L93 Difference]: Finished difference Result 533 states and 775 transitions. [2024-11-09 22:17:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 22:17:01,369 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 91 [2024-11-09 22:17:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:01,372 INFO L225 Difference]: With dead ends: 533 [2024-11-09 22:17:01,372 INFO L226 Difference]: Without dead ends: 380 [2024-11-09 22:17:01,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 22:17:01,374 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 247 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:01,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1138 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 22:17:01,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-09 22:17:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 248. [2024-11-09 22:17:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 148 states have internal predecessors, (169), 93 states have call successors, (93), 15 states have call predecessors, (93), 15 states have return successors, (93), 84 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-09 22:17:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 355 transitions. [2024-11-09 22:17:01,429 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 355 transitions. Word has length 91 [2024-11-09 22:17:01,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:01,429 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 355 transitions. [2024-11-09 22:17:01,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 7 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-09 22:17:01,430 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 355 transitions. [2024-11-09 22:17:01,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-09 22:17:01,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:01,431 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:01,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 22:17:01,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:01,636 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:01,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 538812964, now seen corresponding path program 1 times [2024-11-09 22:17:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:01,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132059237] [2024-11-09 22:17:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:01,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-09 22:17:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 22:17:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-09 22:17:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-09 22:17:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-09 22:17:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 22:17:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 22:17:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 22:17:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-09 22:17:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 22:17:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 22:17:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-09 22:17:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-09 22:17:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-09 22:17:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-09 22:17:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-09 22:17:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-09 22:17:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 34 proven. 18 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-11-09 22:17:01,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:01,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132059237] [2024-11-09 22:17:01,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132059237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:01,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054698621] [2024-11-09 22:17:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:01,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:01,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:01,850 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:01,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:17:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:17:01,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 212 proven. 9 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-09 22:17:02,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 48 proven. 11 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-09 22:17:02,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054698621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:02,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2024-11-09 22:17:02,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959232724] [2024-11-09 22:17:02,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:02,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 22:17:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 22:17:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:17:02,412 INFO L87 Difference]: Start difference. First operand 248 states and 355 transitions. Second operand has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 21 states have internal predecessors, (82), 11 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 11 states have call predecessors, (49), 11 states have call successors, (49) [2024-11-09 22:17:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:05,356 INFO L93 Difference]: Finished difference Result 889 states and 1350 transitions. [2024-11-09 22:17:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-09 22:17:05,357 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 21 states have internal predecessors, (82), 11 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 11 states have call predecessors, (49), 11 states have call successors, (49) Word has length 118 [2024-11-09 22:17:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:05,359 INFO L225 Difference]: With dead ends: 889 [2024-11-09 22:17:05,359 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 22:17:05,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1789 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1275, Invalid=4887, Unknown=0, NotChecked=0, Total=6162 [2024-11-09 22:17:05,364 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 543 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:05,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1422 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 22:17:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 22:17:05,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 22:17:05,365 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) [2024-11-09 22:17:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 22:17:05,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 118 [2024-11-09 22:17:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:05,366 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 22:17:05,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.727272727272727) internal successors, (82), 21 states have internal predecessors, (82), 11 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 11 states have call predecessors, (49), 11 states have call successors, (49) [2024-11-09 22:17:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 22:17:05,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 22:17:05,369 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 22:17:05,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:05,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:05,574 INFO L407 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] [2024-11-09 22:17:05,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.