./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/pr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/pr3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73efddcda095c52d9900d13088d1ec70520de6007541f46343a568e878cf2ed4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:33:36,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:33:36,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:33:36,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:33:36,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:33:36,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:33:36,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:33:36,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:33:36,823 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:33:36,824 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:33:36,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:33:36,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:33:36,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:33:36,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:33:36,826 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:33:36,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:33:36,826 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:33:36,826 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:33:36,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:33:36,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:33:36,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:33:36,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:33:36,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:33:36,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:33:36,832 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:33:36,833 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:33:36,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:33:36,833 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:33:36,833 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:33:36,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:33:36,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:33:36,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:33:36,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:33:36,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:33:36,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:33:36,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:33:36,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:33:36,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:33:36,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:33:36,835 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:33:36,835 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:33:36,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:33:36,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73efddcda095c52d9900d13088d1ec70520de6007541f46343a568e878cf2ed4 [2024-11-16 02:33:37,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:33:37,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:33:37,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:33:37,036 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:33:37,037 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:33:37,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pr3.c [2024-11-16 02:33:38,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:33:38,363 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:33:38,363 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pr3.c [2024-11-16 02:33:38,368 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29379722/4eecbd41d7c54194bb982d1c9c5c7c6a/FLAG725d4beda [2024-11-16 02:33:38,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29379722/4eecbd41d7c54194bb982d1c9c5c7c6a [2024-11-16 02:33:38,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:33:38,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:33:38,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:33:38,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:33:38,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:33:38,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aeaa233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38, skipping insertion in model container [2024-11-16 02:33:38,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,407 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:33:38,538 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/array-tiling/pr3.c[394,407] [2024-11-16 02:33:38,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:33:38,568 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:33:38,577 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/array-tiling/pr3.c[394,407] [2024-11-16 02:33:38,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:33:38,620 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:33:38,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38 WrapperNode [2024-11-16 02:33:38,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:33:38,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:33:38,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:33:38,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:33:38,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,658 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2024-11-16 02:33:38,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:33:38,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:33:38,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:33:38,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:33:38,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,680 INFO L175 MemorySlicer]: Split 16 memory accesses to 3 slices as follows [2, 6, 8]. 50 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-16 02:33:38,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,685 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:33:38,689 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:33:38,689 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:33:38,689 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:33:38,690 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (1/1) ... [2024-11-16 02:33:38,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:33:38,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:38,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:33:38,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:33:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:33:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:33:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:33:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:33:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:33:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:33:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:33:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:33:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:33:38,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:33:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:33:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:33:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:33:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:33:38,834 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:33:38,836 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:33:38,977 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-16 02:33:38,977 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:33:38,987 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:33:38,989 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:33:38,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:33:38 BoogieIcfgContainer [2024-11-16 02:33:38,990 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:33:38,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:33:38,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:33:38,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:33:38,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:33:38" (1/3) ... [2024-11-16 02:33:38,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333390ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:33:38, skipping insertion in model container [2024-11-16 02:33:38,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:38" (2/3) ... [2024-11-16 02:33:38,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333390ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:33:38, skipping insertion in model container [2024-11-16 02:33:38,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:33:38" (3/3) ... [2024-11-16 02:33:38,999 INFO L112 eAbstractionObserver]: Analyzing ICFG pr3.c [2024-11-16 02:33:39,013 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:33:39,014 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:33:39,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:33:39,076 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;@286a2e7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:33:39,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:33:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 02:33:39,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:39,086 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:39,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:39,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:39,091 INFO L85 PathProgramCache]: Analyzing trace with hash 449047511, now seen corresponding path program 1 times [2024-11-16 02:33:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:39,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688750029] [2024-11-16 02:33:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:39,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:39,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:39,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688750029] [2024-11-16 02:33:39,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688750029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:39,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:39,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:33:39,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529584003] [2024-11-16 02:33:39,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:39,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:33:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:33:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:33:39,288 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.5) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:39,298 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2024-11-16 02:33:39,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:33:39,300 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-16 02:33:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:39,305 INFO L225 Difference]: With dead ends: 50 [2024-11-16 02:33:39,305 INFO L226 Difference]: Without dead ends: 22 [2024-11-16 02:33:39,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:33:39,311 INFO L432 NwaCegarLoop]: 34 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, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:39,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-16 02:33:39,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-16 02:33:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-16 02:33:39,334 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 15 [2024-11-16 02:33:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:39,334 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-16 02:33:39,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-16 02:33:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 02:33:39,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:39,335 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:39,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:33:39,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:39,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash 8720273, now seen corresponding path program 1 times [2024-11-16 02:33:39,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:39,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756457824] [2024-11-16 02:33:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756457824] [2024-11-16 02:33:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756457824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:39,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:39,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 02:33:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987957497] [2024-11-16 02:33:39,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:39,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 02:33:39,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:39,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 02:33:39,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:33:39,573 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:39,632 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2024-11-16 02:33:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 02:33:39,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 02:33:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:39,633 INFO L225 Difference]: With dead ends: 38 [2024-11-16 02:33:39,633 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 02:33:39,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:33:39,634 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:39,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 25 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 02:33:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2024-11-16 02:33:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-16 02:33:39,641 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 16 [2024-11-16 02:33:39,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:39,642 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-16 02:33:39,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-16 02:33:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:33:39,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:39,643 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:39,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:33:39,644 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:39,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1072895373, now seen corresponding path program 1 times [2024-11-16 02:33:39,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:39,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311006574] [2024-11-16 02:33:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:40,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:40,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311006574] [2024-11-16 02:33:40,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311006574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:40,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704257675] [2024-11-16 02:33:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:40,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:40,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:40,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:40,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:33:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:40,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:33:40,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:40,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:40,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:40,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:40,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:33:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:40,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:40,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:40,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-16 02:33:40,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:40,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704257675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:40,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:40,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 18 [2024-11-16 02:33:40,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860948472] [2024-11-16 02:33:40,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:40,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:33:40,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:33:40,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:33:40,537 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:40,992 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2024-11-16 02:33:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:33:40,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 02:33:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:40,996 INFO L225 Difference]: With dead ends: 116 [2024-11-16 02:33:40,996 INFO L226 Difference]: Without dead ends: 107 [2024-11-16 02:33:40,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 02:33:40,997 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 228 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:40,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 146 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:33:40,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-16 02:33:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 34. [2024-11-16 02:33:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-11-16 02:33:41,009 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 22 [2024-11-16 02:33:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:41,010 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-11-16 02:33:41,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-11-16 02:33:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:33:41,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:41,012 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:41,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 02:33:41,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:41,213 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:41,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1073818894, now seen corresponding path program 1 times [2024-11-16 02:33:41,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:41,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337939571] [2024-11-16 02:33:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:41,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:33:41,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337939571] [2024-11-16 02:33:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337939571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:41,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:41,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:33:41,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502646452] [2024-11-16 02:33:41,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:41,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:33:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:33:41,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:33:41,258 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:41,268 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-16 02:33:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:33:41,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 02:33:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:41,269 INFO L225 Difference]: With dead ends: 39 [2024-11-16 02:33:41,269 INFO L226 Difference]: Without dead ends: 36 [2024-11-16 02:33:41,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:33:41,270 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:41,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-16 02:33:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-16 02:33:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-11-16 02:33:41,273 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 22 [2024-11-16 02:33:41,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:41,274 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-11-16 02:33:41,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-11-16 02:33:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:33:41,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:41,274 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:41,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:33:41,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:41,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:41,275 INFO L85 PathProgramCache]: Analyzing trace with hash 567336748, now seen corresponding path program 1 times [2024-11-16 02:33:41,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:41,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043469244] [2024-11-16 02:33:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:41,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043469244] [2024-11-16 02:33:41,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043469244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:41,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:33:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558862133] [2024-11-16 02:33:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:41,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:33:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:33:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:33:41,318 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:41,347 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2024-11-16 02:33:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:33:41,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 02:33:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:41,348 INFO L225 Difference]: With dead ends: 65 [2024-11-16 02:33:41,348 INFO L226 Difference]: Without dead ends: 47 [2024-11-16 02:33:41,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:33:41,349 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:41,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-16 02:33:41,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2024-11-16 02:33:41,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-11-16 02:33:41,353 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 22 [2024-11-16 02:33:41,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:41,353 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-11-16 02:33:41,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,353 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-16 02:33:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:33:41,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:41,354 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:41,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 02:33:41,354 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:41,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash 696419467, now seen corresponding path program 1 times [2024-11-16 02:33:41,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:41,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159228207] [2024-11-16 02:33:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:41,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:41,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:41,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159228207] [2024-11-16 02:33:41,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159228207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:41,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:41,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:33:41,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446328295] [2024-11-16 02:33:41,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:41,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:33:41,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:41,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:33:41,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:33:41,422 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:41,449 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2024-11-16 02:33:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:33:41,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 02:33:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:41,450 INFO L225 Difference]: With dead ends: 65 [2024-11-16 02:33:41,450 INFO L226 Difference]: Without dead ends: 47 [2024-11-16 02:33:41,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:33:41,451 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:41,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 52 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-16 02:33:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2024-11-16 02:33:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-16 02:33:41,456 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 22 [2024-11-16 02:33:41,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:41,456 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-16 02:33:41,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-16 02:33:41,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:33:41,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:41,457 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:41,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 02:33:41,457 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:41,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash 403016460, now seen corresponding path program 1 times [2024-11-16 02:33:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212466821] [2024-11-16 02:33:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:41,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:41,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:41,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212466821] [2024-11-16 02:33:41,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212466821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:41,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103536296] [2024-11-16 02:33:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:41,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:41,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:41,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:41,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:33:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:41,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 02:33:41,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:41,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:41,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:41,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:33:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:41,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:41,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-16 02:33:41,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-16 02:33:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:41,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103536296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:41,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:41,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 7] total 17 [2024-11-16 02:33:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195010924] [2024-11-16 02:33:41,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:41,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 02:33:41,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:41,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 02:33:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-16 02:33:41,930 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:42,310 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2024-11-16 02:33:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 02:33:42,311 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 02:33:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:42,311 INFO L225 Difference]: With dead ends: 102 [2024-11-16 02:33:42,311 INFO L226 Difference]: Without dead ends: 99 [2024-11-16 02:33:42,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=1106, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 02:33:42,312 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 191 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:42,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 119 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-16 02:33:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 61. [2024-11-16 02:33:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2024-11-16 02:33:42,330 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 22 [2024-11-16 02:33:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:42,330 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2024-11-16 02:33:42,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2024-11-16 02:33:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:33:42,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:42,331 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:42,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:42,531 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,SelfDestructingSolverStorable6 [2024-11-16 02:33:42,532 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:42,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:42,532 INFO L85 PathProgramCache]: Analyzing trace with hash 815239510, now seen corresponding path program 1 times [2024-11-16 02:33:42,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:42,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828602495] [2024-11-16 02:33:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:42,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:42,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828602495] [2024-11-16 02:33:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828602495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:42,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828621976] [2024-11-16 02:33:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:42,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:42,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:42,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:33:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:42,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:33:42,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:42,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:42,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:42,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:33:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:42,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:43,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:33:43,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-11-16 02:33:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:43,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828621976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:43,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:43,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 20 [2024-11-16 02:33:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033673192] [2024-11-16 02:33:43,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:43,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 02:33:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 02:33:43,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-16 02:33:43,075 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:43,494 INFO L93 Difference]: Finished difference Result 177 states and 221 transitions. [2024-11-16 02:33:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:33:43,494 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 02:33:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:43,495 INFO L225 Difference]: With dead ends: 177 [2024-11-16 02:33:43,495 INFO L226 Difference]: Without dead ends: 147 [2024-11-16 02:33:43,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1083, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 02:33:43,498 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 210 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:43,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 158 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:33:43,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-16 02:33:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 82. [2024-11-16 02:33:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.271604938271605) internal successors, (103), 81 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2024-11-16 02:33:43,511 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 28 [2024-11-16 02:33:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:43,511 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2024-11-16 02:33:43,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,511 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2024-11-16 02:33:43,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:33:43,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:43,512 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:43,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:43,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:43,713 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:43,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:43,714 INFO L85 PathProgramCache]: Analyzing trace with hash -481294809, now seen corresponding path program 1 times [2024-11-16 02:33:43,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:43,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255330320] [2024-11-16 02:33:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:43,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:43,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255330320] [2024-11-16 02:33:43,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255330320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:43,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:43,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:33:43,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956490379] [2024-11-16 02:33:43,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:43,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:33:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:33:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:43,748 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:43,763 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2024-11-16 02:33:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:33:43,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 02:33:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:43,764 INFO L225 Difference]: With dead ends: 111 [2024-11-16 02:33:43,764 INFO L226 Difference]: Without dead ends: 93 [2024-11-16 02:33:43,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:43,765 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:43,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 43 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-16 02:33:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2024-11-16 02:33:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 81 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-16 02:33:43,775 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 28 [2024-11-16 02:33:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:43,776 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-16 02:33:43,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,777 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-16 02:33:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:33:43,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:43,778 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:43,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 02:33:43,778 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:43,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash -29232361, now seen corresponding path program 1 times [2024-11-16 02:33:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495105285] [2024-11-16 02:33:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:33:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495105285] [2024-11-16 02:33:43,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495105285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:43,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:43,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:33:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94709673] [2024-11-16 02:33:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:43,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:33:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:33:43,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:33:43,827 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:43,852 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2024-11-16 02:33:43,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:33:43,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 02:33:43,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:43,853 INFO L225 Difference]: With dead ends: 118 [2024-11-16 02:33:43,853 INFO L226 Difference]: Without dead ends: 97 [2024-11-16 02:33:43,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:33:43,854 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 40 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:43,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-16 02:33:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 82. [2024-11-16 02:33:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 81 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-16 02:33:43,859 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 28 [2024-11-16 02:33:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:43,859 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-16 02:33:43,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-16 02:33:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:33:43,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:43,860 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:43,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 02:33:43,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:43,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1026304714, now seen corresponding path program 1 times [2024-11-16 02:33:43,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:43,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930710031] [2024-11-16 02:33:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:43,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930710031] [2024-11-16 02:33:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930710031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833219003] [2024-11-16 02:33:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:44,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:44,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:44,035 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:44,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:33:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:44,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 02:33:44,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:44,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:44,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:33:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:44,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:44,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:44,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:33:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833219003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:44,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:44,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10] total 21 [2024-11-16 02:33:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901515223] [2024-11-16 02:33:44,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:44,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:33:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:33:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:33:44,353 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:44,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:44,665 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2024-11-16 02:33:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:33:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 02:33:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:44,667 INFO L225 Difference]: With dead ends: 163 [2024-11-16 02:33:44,667 INFO L226 Difference]: Without dead ends: 160 [2024-11-16 02:33:44,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:33:44,668 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 90 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:44,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 193 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:33:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-16 02:33:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 95. [2024-11-16 02:33:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.202127659574468) internal successors, (113), 94 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2024-11-16 02:33:44,674 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 28 [2024-11-16 02:33:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:44,674 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2024-11-16 02:33:44,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2024-11-16 02:33:44,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:33:44,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:44,675 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:44,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:33:44,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:44,876 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:44,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1229032280, now seen corresponding path program 1 times [2024-11-16 02:33:44,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:44,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234125568] [2024-11-16 02:33:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:44,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:44,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:44,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234125568] [2024-11-16 02:33:44,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234125568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:44,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:44,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:33:44,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105367278] [2024-11-16 02:33:44,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:44,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:33:44,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:44,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:33:44,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:44,896 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:44,910 INFO L93 Difference]: Finished difference Result 141 states and 165 transitions. [2024-11-16 02:33:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:33:44,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-16 02:33:44,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:44,911 INFO L225 Difference]: With dead ends: 141 [2024-11-16 02:33:44,911 INFO L226 Difference]: Without dead ends: 106 [2024-11-16 02:33:44,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:44,912 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:44,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-16 02:33:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 83. [2024-11-16 02:33:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 82 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2024-11-16 02:33:44,917 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 28 [2024-11-16 02:33:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:44,917 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2024-11-16 02:33:44,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2024-11-16 02:33:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:33:44,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:44,918 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:44,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 02:33:44,919 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:44,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:44,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1031295583, now seen corresponding path program 2 times [2024-11-16 02:33:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:44,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473253591] [2024-11-16 02:33:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:45,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:45,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473253591] [2024-11-16 02:33:45,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473253591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417657241] [2024-11-16 02:33:45,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:33:45,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:45,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:45,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:45,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:33:45,169 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:33:45,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:45,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:33:45,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:45,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:45,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:33:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:45,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:45,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:33:45,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-11-16 02:33:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:45,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417657241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:45,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:45,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 21 [2024-11-16 02:33:45,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744624715] [2024-11-16 02:33:45,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:45,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:33:45,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:45,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:33:45,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:33:45,423 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 21 states, 21 states have (on average 4.190476190476191) internal successors, (88), 21 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:45,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:45,793 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2024-11-16 02:33:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 02:33:45,794 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.190476190476191) internal successors, (88), 21 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-16 02:33:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:45,794 INFO L225 Difference]: With dead ends: 152 [2024-11-16 02:33:45,794 INFO L226 Difference]: Without dead ends: 141 [2024-11-16 02:33:45,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2024-11-16 02:33:45,795 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 144 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:45,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 255 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:33:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-16 02:33:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 90. [2024-11-16 02:33:45,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1685393258426966) internal successors, (104), 89 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2024-11-16 02:33:45,801 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 34 [2024-11-16 02:33:45,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:45,801 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2024-11-16 02:33:45,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.190476190476191) internal successors, (88), 21 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2024-11-16 02:33:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:33:45,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:45,802 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:45,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:46,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:33:46,003 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:46,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:46,003 INFO L85 PathProgramCache]: Analyzing trace with hash 964288830, now seen corresponding path program 1 times [2024-11-16 02:33:46,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:46,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396359804] [2024-11-16 02:33:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:46,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:46,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396359804] [2024-11-16 02:33:46,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396359804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:46,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663984466] [2024-11-16 02:33:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:46,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:46,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:46,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:33:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:46,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 02:33:46,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:46,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:46,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:46,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:46,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:33:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663984466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:46,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:46,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2024-11-16 02:33:46,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109574670] [2024-11-16 02:33:46,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:46,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:33:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:46,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:33:46,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:33:46,417 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:46,733 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2024-11-16 02:33:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 02:33:46,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-16 02:33:46,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:46,734 INFO L225 Difference]: With dead ends: 201 [2024-11-16 02:33:46,734 INFO L226 Difference]: Without dead ends: 198 [2024-11-16 02:33:46,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=1024, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 02:33:46,735 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 99 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:46,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 194 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:33:46,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-16 02:33:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 130. [2024-11-16 02:33:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.186046511627907) internal successors, (153), 129 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2024-11-16 02:33:46,743 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 34 [2024-11-16 02:33:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:46,743 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2024-11-16 02:33:46,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2024-11-16 02:33:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:33:46,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:46,744 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 02:33:46,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:33:46,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:46,945 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:46,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1587654639, now seen corresponding path program 1 times [2024-11-16 02:33:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:46,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138752822] [2024-11-16 02:33:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:46,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:33:46,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:46,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138752822] [2024-11-16 02:33:46,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138752822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:46,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:46,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:33:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664547815] [2024-11-16 02:33:46,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:46,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:33:46,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:46,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:33:46,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:46,975 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:46,990 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2024-11-16 02:33:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:33:46,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-16 02:33:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:46,992 INFO L225 Difference]: With dead ends: 167 [2024-11-16 02:33:46,992 INFO L226 Difference]: Without dead ends: 122 [2024-11-16 02:33:46,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:46,992 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:46,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 45 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-16 02:33:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 105. [2024-11-16 02:33:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 104 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2024-11-16 02:33:47,001 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 34 [2024-11-16 02:33:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:47,002 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2024-11-16 02:33:47,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:47,002 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2024-11-16 02:33:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 02:33:47,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:47,003 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:47,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 02:33:47,003 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:47,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1860409176, now seen corresponding path program 3 times [2024-11-16 02:33:47,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:47,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696804532] [2024-11-16 02:33:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:47,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696804532] [2024-11-16 02:33:47,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696804532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761307585] [2024-11-16 02:33:47,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:33:47,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:47,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:47,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:47,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:33:47,249 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 02:33:47,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:47,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 02:33:47,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:47,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:47,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761307585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:47,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:47,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 27 [2024-11-16 02:33:47,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316436738] [2024-11-16 02:33:47,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:47,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 02:33:47,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:47,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 02:33:47,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:33:47,646 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:47,788 INFO L93 Difference]: Finished difference Result 204 states and 227 transitions. [2024-11-16 02:33:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:33:47,789 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 02:33:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:47,789 INFO L225 Difference]: With dead ends: 204 [2024-11-16 02:33:47,789 INFO L226 Difference]: Without dead ends: 142 [2024-11-16 02:33:47,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:33:47,790 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 170 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:47,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 117 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-16 02:33:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2024-11-16 02:33:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 116 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2024-11-16 02:33:47,799 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 40 [2024-11-16 02:33:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:47,799 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2024-11-16 02:33:47,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2024-11-16 02:33:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 02:33:47,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:47,799 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:47,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:33:47,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:48,000 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:48,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash -141083996, now seen corresponding path program 4 times [2024-11-16 02:33:48,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:48,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52298986] [2024-11-16 02:33:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:48,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:48,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52298986] [2024-11-16 02:33:48,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52298986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:48,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573162829] [2024-11-16 02:33:48,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:33:48,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:48,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:48,318 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:48,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:33:48,376 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:33:48,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:48,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-16 02:33:48,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:48,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:48,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:48,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:48,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:49,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-11-16 02:33:49,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2024-11-16 02:33:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:49,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573162829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:49,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:49,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 16] total 39 [2024-11-16 02:33:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127604961] [2024-11-16 02:33:49,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:49,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 02:33:49,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 02:33:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1316, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 02:33:49,237 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:51,391 INFO L93 Difference]: Finished difference Result 416 states and 477 transitions. [2024-11-16 02:33:51,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-16 02:33:51,392 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 02:33:51,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:51,393 INFO L225 Difference]: With dead ends: 416 [2024-11-16 02:33:51,393 INFO L226 Difference]: Without dead ends: 367 [2024-11-16 02:33:51,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1226, Invalid=8476, Unknown=0, NotChecked=0, Total=9702 [2024-11-16 02:33:51,395 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 492 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:51,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 379 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:33:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-16 02:33:51,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 180. [2024-11-16 02:33:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1340782122905029) internal successors, (203), 179 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 203 transitions. [2024-11-16 02:33:51,409 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 203 transitions. Word has length 46 [2024-11-16 02:33:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:51,409 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 203 transitions. [2024-11-16 02:33:51,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.282051282051282) internal successors, (128), 39 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 203 transitions. [2024-11-16 02:33:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 02:33:51,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:51,409 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:51,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:33:51,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 02:33:51,610 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:51,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1606507446, now seen corresponding path program 1 times [2024-11-16 02:33:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:51,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263569838] [2024-11-16 02:33:51,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:51,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 02:33:51,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:51,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263569838] [2024-11-16 02:33:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263569838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:51,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:51,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:33:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907869241] [2024-11-16 02:33:51,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:51,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:33:51,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:33:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:51,636 INFO L87 Difference]: Start difference. First operand 180 states and 203 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:51,658 INFO L93 Difference]: Finished difference Result 231 states and 260 transitions. [2024-11-16 02:33:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:33:51,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 02:33:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:51,659 INFO L225 Difference]: With dead ends: 231 [2024-11-16 02:33:51,659 INFO L226 Difference]: Without dead ends: 147 [2024-11-16 02:33:51,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:51,660 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:51,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 58 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:51,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-16 02:33:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 127. [2024-11-16 02:33:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.119047619047619) internal successors, (141), 126 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 141 transitions. [2024-11-16 02:33:51,670 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 141 transitions. Word has length 46 [2024-11-16 02:33:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:51,670 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 141 transitions. [2024-11-16 02:33:51,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,670 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 141 transitions. [2024-11-16 02:33:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 02:33:51,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:51,671 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:51,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 02:33:51,671 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:51,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1535424211, now seen corresponding path program 5 times [2024-11-16 02:33:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790743060] [2024-11-16 02:33:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:51,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:51,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790743060] [2024-11-16 02:33:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790743060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025268555] [2024-11-16 02:33:51,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:33:51,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:51,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:51,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:51,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:33:52,063 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 02:33:52,063 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:52,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:33:52,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:52,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:52,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:52,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:52,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:33:52,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2024-11-16 02:33:52,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:33:52,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 16 [2024-11-16 02:33:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:52,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:53,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2024-11-16 02:33:53,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:33:53,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 110 [2024-11-16 02:33:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:53,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025268555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:53,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:53,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 41 [2024-11-16 02:33:53,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954207545] [2024-11-16 02:33:53,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:53,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 02:33:53,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 02:33:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1473, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 02:33:53,100 INFO L87 Difference]: Start difference. First operand 127 states and 141 transitions. Second operand has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 41 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:55,796 INFO L93 Difference]: Finished difference Result 312 states and 344 transitions. [2024-11-16 02:33:55,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-16 02:33:55,797 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 41 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-16 02:33:55,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:55,797 INFO L225 Difference]: With dead ends: 312 [2024-11-16 02:33:55,798 INFO L226 Difference]: Without dead ends: 295 [2024-11-16 02:33:55,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2717 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1531, Invalid=9389, Unknown=0, NotChecked=0, Total=10920 [2024-11-16 02:33:55,800 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 588 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:55,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 640 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:33:55,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-16 02:33:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 205. [2024-11-16 02:33:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.0931372549019607) internal successors, (223), 204 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 223 transitions. [2024-11-16 02:33:55,819 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 223 transitions. Word has length 52 [2024-11-16 02:33:55,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:55,819 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 223 transitions. [2024-11-16 02:33:55,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 41 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 223 transitions. [2024-11-16 02:33:55,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 02:33:55,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:55,820 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:55,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:56,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:56,020 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:56,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:56,021 INFO L85 PathProgramCache]: Analyzing trace with hash 982590953, now seen corresponding path program 2 times [2024-11-16 02:33:56,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:56,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848265870] [2024-11-16 02:33:56,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:56,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:56,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:56,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848265870] [2024-11-16 02:33:56,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848265870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:56,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35320184] [2024-11-16 02:33:56,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:33:56,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:56,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:56,313 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:56,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:33:56,380 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:33:56,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:56,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 02:33:56,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:56,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:56,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:33:56,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:33:56,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2024-11-16 02:33:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:56,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:56,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:33:56,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:33:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:56,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35320184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:56,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:56,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 34 [2024-11-16 02:33:56,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703140621] [2024-11-16 02:33:56,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:56,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 02:33:56,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 02:33:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:33:56,963 INFO L87 Difference]: Start difference. First operand 205 states and 223 transitions. Second operand has 34 states, 34 states have (on average 4.176470588235294) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:58,243 INFO L93 Difference]: Finished difference Result 304 states and 332 transitions. [2024-11-16 02:33:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-16 02:33:58,243 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.176470588235294) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-16 02:33:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:58,244 INFO L225 Difference]: With dead ends: 304 [2024-11-16 02:33:58,244 INFO L226 Difference]: Without dead ends: 293 [2024-11-16 02:33:58,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1557 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=867, Invalid=5775, Unknown=0, NotChecked=0, Total=6642 [2024-11-16 02:33:58,246 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 323 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:58,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 598 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:33:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-16 02:33:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 189. [2024-11-16 02:33:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.0957446808510638) internal successors, (206), 188 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 206 transitions. [2024-11-16 02:33:58,266 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 206 transitions. Word has length 52 [2024-11-16 02:33:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:58,267 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 206 transitions. [2024-11-16 02:33:58,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.176470588235294) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 206 transitions. [2024-11-16 02:33:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 02:33:58,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:58,267 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:58,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:33:58,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:58,470 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:58,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash -381104406, now seen corresponding path program 2 times [2024-11-16 02:33:58,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:58,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321754823] [2024-11-16 02:33:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:58,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:58,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:58,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321754823] [2024-11-16 02:33:58,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321754823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:58,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427146379] [2024-11-16 02:33:58,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:33:58,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:58,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:58,688 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:58,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:33:58,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:33:58,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:58,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-16 02:33:58,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:58,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:58,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:33:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:59,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:59,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:59,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:33:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:59,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427146379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:59,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:59,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 14] total 29 [2024-11-16 02:33:59,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750000859] [2024-11-16 02:33:59,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:59,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 02:33:59,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:59,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 02:33:59,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2024-11-16 02:33:59,214 INFO L87 Difference]: Start difference. First operand 189 states and 206 transitions. Second operand has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:00,048 INFO L93 Difference]: Finished difference Result 309 states and 341 transitions. [2024-11-16 02:34:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-16 02:34:00,052 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-16 02:34:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:00,053 INFO L225 Difference]: With dead ends: 309 [2024-11-16 02:34:00,053 INFO L226 Difference]: Without dead ends: 306 [2024-11-16 02:34:00,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=567, Invalid=3593, Unknown=0, NotChecked=0, Total=4160 [2024-11-16 02:34:00,054 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 116 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:00,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 525 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 02:34:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-16 02:34:00,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 201. [2024-11-16 02:34:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.1) internal successors, (220), 200 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 220 transitions. [2024-11-16 02:34:00,072 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 220 transitions. Word has length 52 [2024-11-16 02:34:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:00,072 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 220 transitions. [2024-11-16 02:34:00,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 220 transitions. [2024-11-16 02:34:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 02:34:00,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:00,072 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:00,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:00,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 02:34:00,273 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:00,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:00,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1557730126, now seen corresponding path program 3 times [2024-11-16 02:34:00,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:00,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232705232] [2024-11-16 02:34:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:00,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:00,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:00,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232705232] [2024-11-16 02:34:00,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232705232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:00,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34937269] [2024-11-16 02:34:00,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:34:00,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:00,507 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:00,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:34:00,600 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 02:34:00,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:00,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-16 02:34:00,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:00,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:00,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:00,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:00,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2024-11-16 02:34:01,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:01,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 16 [2024-11-16 02:34:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:34:01,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:01,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:01,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:34:01,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34937269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:01,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:01,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 33 [2024-11-16 02:34:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302194112] [2024-11-16 02:34:01,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:01,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:34:01,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:01,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:34:01,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:34:01,197 INFO L87 Difference]: Start difference. First operand 201 states and 220 transitions. Second operand has 33 states, 33 states have (on average 4.393939393939394) internal successors, (145), 33 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:03,759 INFO L93 Difference]: Finished difference Result 402 states and 443 transitions. [2024-11-16 02:34:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-16 02:34:03,761 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.393939393939394) internal successors, (145), 33 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 02:34:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:03,762 INFO L225 Difference]: With dead ends: 402 [2024-11-16 02:34:03,762 INFO L226 Difference]: Without dead ends: 373 [2024-11-16 02:34:03,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6553 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1786, Invalid=17120, Unknown=0, NotChecked=0, Total=18906 [2024-11-16 02:34:03,766 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 952 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:03,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 703 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:34:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-16 02:34:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 213. [2024-11-16 02:34:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.099056603773585) internal successors, (233), 212 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 233 transitions. [2024-11-16 02:34:03,786 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 233 transitions. Word has length 58 [2024-11-16 02:34:03,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:03,786 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 233 transitions. [2024-11-16 02:34:03,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.393939393939394) internal successors, (145), 33 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 233 transitions. [2024-11-16 02:34:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 02:34:03,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:03,787 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:03,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:03,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 02:34:03,991 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:03,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:03,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1110447615, now seen corresponding path program 6 times [2024-11-16 02:34:03,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:03,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704542510] [2024-11-16 02:34:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:03,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 88 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:04,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:04,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704542510] [2024-11-16 02:34:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704542510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301326104] [2024-11-16 02:34:04,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:34:04,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:04,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:04,231 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:04,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:34:04,333 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:34:04,333 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:04,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:34:04,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 120 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:04,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 120 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:04,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301326104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:04,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:04,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 39 [2024-11-16 02:34:04,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591731543] [2024-11-16 02:34:04,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:04,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 02:34:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 02:34:04,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 02:34:04,942 INFO L87 Difference]: Start difference. First operand 213 states and 233 transitions. Second operand has 39 states, 39 states have (on average 4.538461538461538) internal successors, (177), 39 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:05,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:05,184 INFO L93 Difference]: Finished difference Result 377 states and 410 transitions. [2024-11-16 02:34:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 02:34:05,184 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.538461538461538) internal successors, (177), 39 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-16 02:34:05,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:05,185 INFO L225 Difference]: With dead ends: 377 [2024-11-16 02:34:05,185 INFO L226 Difference]: Without dead ends: 243 [2024-11-16 02:34:05,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=1482, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:34:05,186 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 167 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:05,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 234 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:34:05,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-16 02:34:05,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 231. [2024-11-16 02:34:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.0869565217391304) internal successors, (250), 230 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 250 transitions. [2024-11-16 02:34:05,213 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 250 transitions. Word has length 64 [2024-11-16 02:34:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:05,213 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 250 transitions. [2024-11-16 02:34:05,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.538461538461538) internal successors, (177), 39 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 250 transitions. [2024-11-16 02:34:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 02:34:05,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:05,214 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:05,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:05,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-16 02:34:05,418 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:05,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:05,419 INFO L85 PathProgramCache]: Analyzing trace with hash -384584709, now seen corresponding path program 7 times [2024-11-16 02:34:05,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:05,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91886241] [2024-11-16 02:34:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:05,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:05,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91886241] [2024-11-16 02:34:05,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91886241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:05,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258951587] [2024-11-16 02:34:05,791 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:34:05,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:05,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:05,793 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:05,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 02:34:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:05,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:34:05,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:06,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:06,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:06,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:06,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:34:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:06,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:06,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:06,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:06,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258951587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:06,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:06,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 15] total 43 [2024-11-16 02:34:06,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673099148] [2024-11-16 02:34:06,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:06,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-16 02:34:06,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:06,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-16 02:34:06,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1655, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 02:34:06,556 INFO L87 Difference]: Start difference. First operand 231 states and 250 transitions. Second operand has 43 states, 43 states have (on average 4.558139534883721) internal successors, (196), 43 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:09,129 INFO L93 Difference]: Finished difference Result 433 states and 474 transitions. [2024-11-16 02:34:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-16 02:34:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.558139534883721) internal successors, (196), 43 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 02:34:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:09,131 INFO L225 Difference]: With dead ends: 433 [2024-11-16 02:34:09,131 INFO L226 Difference]: Without dead ends: 422 [2024-11-16 02:34:09,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3391 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1401, Invalid=12641, Unknown=0, NotChecked=0, Total=14042 [2024-11-16 02:34:09,132 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 412 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:09,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 975 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:34:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-16 02:34:09,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 249. [2024-11-16 02:34:09,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.0887096774193548) internal successors, (270), 248 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 270 transitions. [2024-11-16 02:34:09,157 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 270 transitions. Word has length 70 [2024-11-16 02:34:09,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:09,157 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 270 transitions. [2024-11-16 02:34:09,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.558139534883721) internal successors, (196), 43 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:09,157 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 270 transitions. [2024-11-16 02:34:09,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-16 02:34:09,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:09,158 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:09,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:09,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:09,361 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:09,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1625726706, now seen corresponding path program 1 times [2024-11-16 02:34:09,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:09,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482441474] [2024-11-16 02:34:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:09,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:09,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:09,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482441474] [2024-11-16 02:34:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482441474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:09,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260491585] [2024-11-16 02:34:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:09,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:09,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:09,686 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:09,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 02:34:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:09,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-16 02:34:09,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:09,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:09,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:09,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:10,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:10,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:10,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260491585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:10,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 15] total 33 [2024-11-16 02:34:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85231424] [2024-11-16 02:34:10,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:10,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:34:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:34:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:34:10,311 INFO L87 Difference]: Start difference. First operand 249 states and 270 transitions. Second operand has 33 states, 33 states have (on average 4.454545454545454) internal successors, (147), 33 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:11,718 INFO L93 Difference]: Finished difference Result 382 states and 418 transitions. [2024-11-16 02:34:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-16 02:34:11,718 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.454545454545454) internal successors, (147), 33 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-16 02:34:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:11,719 INFO L225 Difference]: With dead ends: 382 [2024-11-16 02:34:11,719 INFO L226 Difference]: Without dead ends: 379 [2024-11-16 02:34:11,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3155 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1043, Invalid=9057, Unknown=0, NotChecked=0, Total=10100 [2024-11-16 02:34:11,720 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 238 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:11,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 725 Invalid, 1939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:34:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-16 02:34:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 269. [2024-11-16 02:34:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.0970149253731343) internal successors, (294), 268 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 294 transitions. [2024-11-16 02:34:11,748 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 294 transitions. Word has length 70 [2024-11-16 02:34:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:11,748 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 294 transitions. [2024-11-16 02:34:11,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.454545454545454) internal successors, (147), 33 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 294 transitions. [2024-11-16 02:34:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 02:34:11,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:11,749 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:11,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 02:34:11,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:11,953 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:11,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1429677380, now seen corresponding path program 8 times [2024-11-16 02:34:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:11,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768769191] [2024-11-16 02:34:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 14 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:12,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768769191] [2024-11-16 02:34:12,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768769191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901069336] [2024-11-16 02:34:12,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:34:12,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:12,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:12,346 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:12,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 02:34:12,432 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:34:12,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:12,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 02:34:12,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:12,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:12,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 14 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:13,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:13,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:13,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 14 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:13,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901069336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:13,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:13,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 49 [2024-11-16 02:34:13,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240527289] [2024-11-16 02:34:13,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:13,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:34:13,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:34:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2171, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:34:13,466 INFO L87 Difference]: Start difference. First operand 269 states and 294 transitions. Second operand has 49 states, 49 states have (on average 4.387755102040816) internal successors, (215), 49 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:16,454 INFO L93 Difference]: Finished difference Result 438 states and 480 transitions. [2024-11-16 02:34:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-16 02:34:16,455 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.387755102040816) internal successors, (215), 49 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 02:34:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:16,456 INFO L225 Difference]: With dead ends: 438 [2024-11-16 02:34:16,456 INFO L226 Difference]: Without dead ends: 427 [2024-11-16 02:34:16,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3589 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1511, Invalid=13009, Unknown=0, NotChecked=0, Total=14520 [2024-11-16 02:34:16,458 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 461 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:16,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1299 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 02:34:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-16 02:34:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 305. [2024-11-16 02:34:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.0921052631578947) internal successors, (332), 304 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 332 transitions. [2024-11-16 02:34:16,490 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 332 transitions. Word has length 76 [2024-11-16 02:34:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:16,490 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 332 transitions. [2024-11-16 02:34:16,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.387755102040816) internal successors, (215), 49 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 332 transitions. [2024-11-16 02:34:16,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-16 02:34:16,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:16,491 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:16,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:16,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-16 02:34:16,691 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:16,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:16,692 INFO L85 PathProgramCache]: Analyzing trace with hash 280823520, now seen corresponding path program 3 times [2024-11-16 02:34:16,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:16,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099257898] [2024-11-16 02:34:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:17,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099257898] [2024-11-16 02:34:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099257898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732278282] [2024-11-16 02:34:17,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:34:17,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:17,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:17,020 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:17,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 02:34:17,198 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-16 02:34:17,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:17,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 02:34:17,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:17,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-16 02:34:17,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-16 02:34:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:17,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:17,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:17,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:17,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732278282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:17,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:17,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 30 [2024-11-16 02:34:17,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392733198] [2024-11-16 02:34:17,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:17,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 02:34:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 02:34:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2024-11-16 02:34:17,626 INFO L87 Difference]: Start difference. First operand 305 states and 332 transitions. Second operand has 30 states, 30 states have (on average 4.666666666666667) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:19,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:19,149 INFO L93 Difference]: Finished difference Result 475 states and 522 transitions. [2024-11-16 02:34:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-16 02:34:19,150 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.666666666666667) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-16 02:34:19,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:19,151 INFO L225 Difference]: With dead ends: 475 [2024-11-16 02:34:19,151 INFO L226 Difference]: Without dead ends: 472 [2024-11-16 02:34:19,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2624 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=851, Invalid=7521, Unknown=0, NotChecked=0, Total=8372 [2024-11-16 02:34:19,152 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 166 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:19,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 674 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:34:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-16 02:34:19,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 309. [2024-11-16 02:34:19,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.0876623376623376) internal successors, (335), 308 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 335 transitions. [2024-11-16 02:34:19,194 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 335 transitions. Word has length 76 [2024-11-16 02:34:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:19,194 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 335 transitions. [2024-11-16 02:34:19,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.666666666666667) internal successors, (140), 30 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 335 transitions. [2024-11-16 02:34:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 02:34:19,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:19,195 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:19,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-16 02:34:19,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 02:34:19,396 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:19,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1399521304, now seen corresponding path program 4 times [2024-11-16 02:34:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:19,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182427021] [2024-11-16 02:34:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:19,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:19,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182427021] [2024-11-16 02:34:19,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182427021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:19,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210957787] [2024-11-16 02:34:19,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:34:19,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:19,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:19,718 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:19,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 02:34:19,804 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:34:19,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:19,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-16 02:34:19,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:19,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:20,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:20,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:20,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210957787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:20,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 34 [2024-11-16 02:34:20,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778878739] [2024-11-16 02:34:20,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:20,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-16 02:34:20,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:20,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-16 02:34:20,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:34:20,297 INFO L87 Difference]: Start difference. First operand 309 states and 335 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:22,415 INFO L93 Difference]: Finished difference Result 521 states and 572 transitions. [2024-11-16 02:34:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-16 02:34:22,416 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-16 02:34:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:22,417 INFO L225 Difference]: With dead ends: 521 [2024-11-16 02:34:22,417 INFO L226 Difference]: Without dead ends: 518 [2024-11-16 02:34:22,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3744 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1091, Invalid=10465, Unknown=0, NotChecked=0, Total=11556 [2024-11-16 02:34:22,418 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 216 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 4016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:22,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1074 Invalid, 4016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 3681 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 02:34:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-16 02:34:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 321. [2024-11-16 02:34:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.084375) internal successors, (347), 320 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 347 transitions. [2024-11-16 02:34:22,455 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 347 transitions. Word has length 82 [2024-11-16 02:34:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:22,456 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 347 transitions. [2024-11-16 02:34:22,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 347 transitions. [2024-11-16 02:34:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 02:34:22,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:22,457 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:22,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-16 02:34:22,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-16 02:34:22,657 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:22,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1178105962, now seen corresponding path program 9 times [2024-11-16 02:34:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609856963] [2024-11-16 02:34:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:22,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 211 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609856963] [2024-11-16 02:34:23,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609856963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:23,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313804516] [2024-11-16 02:34:23,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:34:23,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:23,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:23,002 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:23,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 02:34:23,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-16 02:34:23,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:23,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 02:34:23,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 261 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:23,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 261 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:24,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313804516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:24,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:24,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 51 [2024-11-16 02:34:24,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747082110] [2024-11-16 02:34:24,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:24,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 02:34:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:24,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 02:34:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=1934, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 02:34:24,017 INFO L87 Difference]: Start difference. First operand 321 states and 347 transitions. Second operand has 51 states, 51 states have (on average 4.882352941176471) internal successors, (249), 51 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:24,273 INFO L93 Difference]: Finished difference Result 557 states and 602 transitions. [2024-11-16 02:34:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:34:24,274 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.882352941176471) internal successors, (249), 51 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-11-16 02:34:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:24,274 INFO L225 Difference]: With dead ends: 557 [2024-11-16 02:34:24,274 INFO L226 Difference]: Without dead ends: 351 [2024-11-16 02:34:24,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=796, Invalid=2510, Unknown=0, NotChecked=0, Total=3306 [2024-11-16 02:34:24,275 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 384 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:24,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 289 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:34:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-16 02:34:24,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2024-11-16 02:34:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.0769230769230769) internal successors, (364), 338 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 364 transitions. [2024-11-16 02:34:24,313 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 364 transitions. Word has length 88 [2024-11-16 02:34:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:24,313 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 364 transitions. [2024-11-16 02:34:24,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.882352941176471) internal successors, (249), 51 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 364 transitions. [2024-11-16 02:34:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-16 02:34:24,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:24,314 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:24,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:24,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-16 02:34:24,514 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:24,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1718612370, now seen corresponding path program 10 times [2024-11-16 02:34:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147847359] [2024-11-16 02:34:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 18 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147847359] [2024-11-16 02:34:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147847359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231132704] [2024-11-16 02:34:25,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:34:25,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:25,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:25,010 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:25,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 02:34:25,130 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:34:25,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:25,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 02:34:25,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:25,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:25,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:25,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 18 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:25,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:26,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-11-16 02:34:26,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2024-11-16 02:34:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:26,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231132704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:26,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:26,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 22] total 60 [2024-11-16 02:34:26,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208756653] [2024-11-16 02:34:26,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:26,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-16 02:34:26,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-16 02:34:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3305, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 02:34:26,753 INFO L87 Difference]: Start difference. First operand 339 states and 364 transitions. Second operand has 60 states, 60 states have (on average 4.533333333333333) internal successors, (272), 60 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:33,709 INFO L93 Difference]: Finished difference Result 615 states and 675 transitions. [2024-11-16 02:34:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-16 02:34:33,710 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.533333333333333) internal successors, (272), 60 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-16 02:34:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:33,711 INFO L225 Difference]: With dead ends: 615 [2024-11-16 02:34:33,711 INFO L226 Difference]: Without dead ends: 604 [2024-11-16 02:34:33,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11023 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2928, Invalid=33744, Unknown=0, NotChecked=0, Total=36672 [2024-11-16 02:34:33,713 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 602 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 4927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:33,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1419 Invalid, 4927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 02:34:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-16 02:34:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 353. [2024-11-16 02:34:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.0795454545454546) internal successors, (380), 352 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 380 transitions. [2024-11-16 02:34:33,760 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 380 transitions. Word has length 94 [2024-11-16 02:34:33,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:33,760 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 380 transitions. [2024-11-16 02:34:33,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.533333333333333) internal successors, (272), 60 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:33,760 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 380 transitions. [2024-11-16 02:34:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-16 02:34:33,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:33,761 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:33,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 02:34:33,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:33,961 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:33,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1873964731, now seen corresponding path program 2 times [2024-11-16 02:34:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:33,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913550029] [2024-11-16 02:34:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:34,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913550029] [2024-11-16 02:34:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913550029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630720597] [2024-11-16 02:34:34,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:34:34,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:34,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:34,392 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:34,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 02:34:34,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:34:34,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:34,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-16 02:34:34,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:34,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:34,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:34,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:35,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:35,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:35,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:35,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630720597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:35,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:35,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 19] total 41 [2024-11-16 02:34:35,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002189071] [2024-11-16 02:34:35,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:35,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 02:34:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 02:34:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 02:34:35,250 INFO L87 Difference]: Start difference. First operand 353 states and 380 transitions. Second operand has 41 states, 41 states have (on average 4.7560975609756095) internal successors, (195), 41 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:37,942 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-11-16 02:34:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-16 02:34:37,942 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.7560975609756095) internal successors, (195), 41 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-16 02:34:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:37,944 INFO L225 Difference]: With dead ends: 544 [2024-11-16 02:34:37,944 INFO L226 Difference]: Without dead ends: 541 [2024-11-16 02:34:37,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5848 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1520, Invalid=16302, Unknown=0, NotChecked=0, Total=17822 [2024-11-16 02:34:37,945 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 320 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 4218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:37,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1472 Invalid, 4218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-16 02:34:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-16 02:34:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 377. [2024-11-16 02:34:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.0851063829787233) internal successors, (408), 376 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 408 transitions. [2024-11-16 02:34:37,999 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 408 transitions. Word has length 94 [2024-11-16 02:34:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:38,000 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 408 transitions. [2024-11-16 02:34:38,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.7560975609756095) internal successors, (195), 41 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:38,000 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 408 transitions. [2024-11-16 02:34:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-16 02:34:38,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:38,000 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:38,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:38,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:38,201 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:38,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:38,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1837012379, now seen corresponding path program 11 times [2024-11-16 02:34:38,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:38,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176696999] [2024-11-16 02:34:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:38,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176696999] [2024-11-16 02:34:38,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176696999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:38,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873228565] [2024-11-16 02:34:38,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:34:38,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:38,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:38,720 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:38,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 02:34:38,868 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-16 02:34:38,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:38,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-16 02:34:38,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:38,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:38,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:39,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:39,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-16 02:34:39,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:39,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-16 02:34:39,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:39,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-16 02:34:39,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:39,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 55 [2024-11-16 02:34:39,264 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:39,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 62 [2024-11-16 02:34:39,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:39,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 60 treesize of output 69 [2024-11-16 02:34:40,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:40,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 70 treesize of output 22 [2024-11-16 02:34:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:40,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:41,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2024-11-16 02:34:41,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:41,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 468 treesize of output 404 [2024-11-16 02:34:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 20 proven. 344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:41,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873228565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:41,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:41,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29, 23] total 69 [2024-11-16 02:34:41,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783176948] [2024-11-16 02:34:41,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:41,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-16 02:34:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-16 02:34:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=4371, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 02:34:41,378 INFO L87 Difference]: Start difference. First operand 377 states and 408 transitions. Second operand has 69 states, 69 states have (on average 4.144927536231884) internal successors, (286), 69 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:50,158 INFO L93 Difference]: Finished difference Result 729 states and 791 transitions. [2024-11-16 02:34:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-16 02:34:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.144927536231884) internal successors, (286), 69 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-16 02:34:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:50,160 INFO L225 Difference]: With dead ends: 729 [2024-11-16 02:34:50,160 INFO L226 Difference]: Without dead ends: 712 [2024-11-16 02:34:50,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11935 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3785, Invalid=36817, Unknown=0, NotChecked=0, Total=40602 [2024-11-16 02:34:50,162 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 1138 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 5007 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 5591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 5007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:50,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2405 Invalid, 5591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 5007 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 02:34:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-16 02:34:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 559. [2024-11-16 02:34:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.0806451612903225) internal successors, (603), 558 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 603 transitions. [2024-11-16 02:34:50,239 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 603 transitions. Word has length 100 [2024-11-16 02:34:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:50,240 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 603 transitions. [2024-11-16 02:34:50,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.144927536231884) internal successors, (286), 69 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 603 transitions. [2024-11-16 02:34:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-16 02:34:50,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:50,241 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 8, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:50,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:50,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:50,442 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:50,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 333251092, now seen corresponding path program 4 times [2024-11-16 02:34:50,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:50,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860669215] [2024-11-16 02:34:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:50,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860669215] [2024-11-16 02:34:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860669215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827981073] [2024-11-16 02:34:50,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:34:50,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:50,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:50,886 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:50,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 02:34:51,001 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:34:51,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:51,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-16 02:34:51,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:51,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:51,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:51,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:51,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:51,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:51,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827981073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:51,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:51,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 20] total 41 [2024-11-16 02:34:51,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565140476] [2024-11-16 02:34:51,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:51,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-16 02:34:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:51,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-16 02:34:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 02:34:51,801 INFO L87 Difference]: Start difference. First operand 559 states and 603 transitions. Second operand has 41 states, 41 states have (on average 5.024390243902439) internal successors, (206), 41 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:54,655 INFO L93 Difference]: Finished difference Result 787 states and 858 transitions. [2024-11-16 02:34:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-16 02:34:54,656 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.024390243902439) internal successors, (206), 41 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-16 02:34:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:54,657 INFO L225 Difference]: With dead ends: 787 [2024-11-16 02:34:54,657 INFO L226 Difference]: Without dead ends: 784 [2024-11-16 02:34:54,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5384 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1407, Invalid=14849, Unknown=0, NotChecked=0, Total=16256 [2024-11-16 02:34:54,658 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 262 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 4493 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 4922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 4493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:54,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1536 Invalid, 4922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 4493 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 02:34:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-16 02:34:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 545. [2024-11-16 02:34:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.0772058823529411) internal successors, (586), 544 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 586 transitions. [2024-11-16 02:34:54,733 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 586 transitions. Word has length 100 [2024-11-16 02:34:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:54,734 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 586 transitions. [2024-11-16 02:34:54,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.024390243902439) internal successors, (206), 41 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 586 transitions. [2024-11-16 02:34:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 02:34:54,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:54,735 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 7, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:54,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-16 02:34:54,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:54,935 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:54,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash 224146140, now seen corresponding path program 5 times [2024-11-16 02:34:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:54,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254238771] [2024-11-16 02:34:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:54,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:55,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:55,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254238771] [2024-11-16 02:34:55,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254238771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:55,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609826609] [2024-11-16 02:34:55,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:34:55,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:55,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:55,380 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:55,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-16 02:34:55,561 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-16 02:34:55,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:55,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 02:34:55,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:55,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-16 02:34:55,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:34:55,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:55,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2024-11-16 02:34:56,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:56,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 16 [2024-11-16 02:34:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 132 proven. 287 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:34:56,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:56,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:56,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 132 proven. 287 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 02:34:56,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609826609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:56,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:56,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 20] total 58 [2024-11-16 02:34:56,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884680265] [2024-11-16 02:34:56,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:56,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-16 02:34:56,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-16 02:34:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3086, Unknown=0, NotChecked=0, Total=3306 [2024-11-16 02:34:56,934 INFO L87 Difference]: Start difference. First operand 545 states and 586 transitions. Second operand has 58 states, 58 states have (on average 4.982758620689655) internal successors, (289), 58 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:35:05,784 INFO L93 Difference]: Finished difference Result 834 states and 906 transitions. [2024-11-16 02:35:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2024-11-16 02:35:05,784 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.982758620689655) internal successors, (289), 58 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-16 02:35:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:35:05,786 INFO L225 Difference]: With dead ends: 834 [2024-11-16 02:35:05,786 INFO L226 Difference]: Without dead ends: 805 [2024-11-16 02:35:05,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33553 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4093, Invalid=82637, Unknown=0, NotChecked=0, Total=86730 [2024-11-16 02:35:05,790 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 1614 mSDsluCounter, 2849 mSDsCounter, 0 mSdLazyCounter, 8237 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 9011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 8237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:35:05,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 2930 Invalid, 9011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 8237 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-16 02:35:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-16 02:35:05,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 499. [2024-11-16 02:35:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.0783132530120483) internal successors, (537), 498 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 537 transitions. [2024-11-16 02:35:05,885 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 537 transitions. Word has length 106 [2024-11-16 02:35:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:35:05,885 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 537 transitions. [2024-11-16 02:35:05,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.982758620689655) internal successors, (289), 58 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:05,886 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 537 transitions. [2024-11-16 02:35:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-16 02:35:05,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:35:05,886 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:35:05,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-16 02:35:06,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:06,087 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:35:06,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:35:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash 15609197, now seen corresponding path program 12 times [2024-11-16 02:35:06,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:35:06,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44848962] [2024-11-16 02:35:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:35:06,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:35:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:35:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 388 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:35:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44848962] [2024-11-16 02:35:06,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44848962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:35:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056285520] [2024-11-16 02:35:06,549 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:35:06,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:35:06,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:35:06,550 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:35:06,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-16 02:35:06,984 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-16 02:35:06,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:35:06,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 02:35:06,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:35:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 456 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:07,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:35:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 456 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:35:08,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056285520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:35:08,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:35:08,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 22] total 63 [2024-11-16 02:35:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636600427] [2024-11-16 02:35:08,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:35:08,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-16 02:35:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:35:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-16 02:35:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=2975, Unknown=0, NotChecked=0, Total=3906 [2024-11-16 02:35:08,115 INFO L87 Difference]: Start difference. First operand 499 states and 537 transitions. Second operand has 63 states, 63 states have (on average 5.095238095238095) internal successors, (321), 63 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:35:08,510 INFO L93 Difference]: Finished difference Result 773 states and 836 transitions. [2024-11-16 02:35:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 02:35:08,510 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.095238095238095) internal successors, (321), 63 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-11-16 02:35:08,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:35:08,511 INFO L225 Difference]: With dead ends: 773 [2024-11-16 02:35:08,511 INFO L226 Difference]: Without dead ends: 495 [2024-11-16 02:35:08,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1993 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1167, Invalid=3803, Unknown=0, NotChecked=0, Total=4970 [2024-11-16 02:35:08,512 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 548 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:35:08,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 402 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:35:08,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-16 02:35:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 483. [2024-11-16 02:35:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.0788381742738589) internal successors, (520), 482 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 520 transitions. [2024-11-16 02:35:08,586 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 520 transitions. Word has length 112 [2024-11-16 02:35:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:35:08,586 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 520 transitions. [2024-11-16 02:35:08,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.095238095238095) internal successors, (321), 63 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:35:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 520 transitions. [2024-11-16 02:35:08,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 02:35:08,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:35:08,587 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 10, 6, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:35:08,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-16 02:35:08,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-16 02:35:08,787 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:35:08,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:35:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 442010215, now seen corresponding path program 13 times [2024-11-16 02:35:08,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:35:08,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435476542] [2024-11-16 02:35:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:35:08,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:35:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat