./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/heap-data/calendar.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/heap-data/calendar.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe08ef78ee5c945bc38e9e915e26405aefe9ffb2d4911c91347e07e6a879dcd5 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 21:17:10,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 21:17:10,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 21:17:10,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 21:17:10,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 21:17:10,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 21:17:10,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 21:17:10,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 21:17:10,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 21:17:10,220 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 21:17:10,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 21:17:10,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 21:17:10,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 21:17:10,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 21:17:10,223 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 21:17:10,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 21:17:10,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 21:17:10,224 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 21:17:10,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 21:17:10,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 21:17:10,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 21:17:10,225 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 21:17:10,225 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 21:17:10,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 21:17:10,225 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 21:17:10,226 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 21:17:10,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 21:17:10,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 21:17:10,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 21:17:10,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 21:17:10,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 21:17:10,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:17:10,228 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 21:17:10,228 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 21:17:10,228 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 21:17:10,228 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 21:17:10,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 21:17:10,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 21:17:10,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 21:17:10,229 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 21:17:10,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 21:17:10,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 21:17:10,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe08ef78ee5c945bc38e9e915e26405aefe9ffb2d4911c91347e07e6a879dcd5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 21:17:10,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 21:17:10,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 21:17:10,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 21:17:10,481 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 21:17:10,481 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 21:17:10,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/calendar.i [2023-11-22 21:17:11,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 21:17:11,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 21:17:11,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i [2023-11-22 21:17:11,832 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f9db6e0/cde09001330d49bab258bd21ce1f8c36/FLAGd2b3ea63f [2023-11-22 21:17:11,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f9db6e0/cde09001330d49bab258bd21ce1f8c36 [2023-11-22 21:17:11,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 21:17:11,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 21:17:11,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 21:17:11,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 21:17:11,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 21:17:11,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:17:11" (1/1) ... [2023-11-22 21:17:11,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395bdee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:11, skipping insertion in model container [2023-11-22 21:17:11,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:17:11" (1/1) ... [2023-11-22 21:17:11,901 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 21:17:12,134 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i[23742,23755] [2023-11-22 21:17:12,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:17:12,148 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 21:17:12,183 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i[23742,23755] [2023-11-22 21:17:12,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 21:17:12,210 INFO L206 MainTranslator]: Completed translation [2023-11-22 21:17:12,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12 WrapperNode [2023-11-22 21:17:12,214 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 21:17:12,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 21:17:12,216 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 21:17:12,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 21:17:12,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,271 INFO L138 Inliner]: procedures = 121, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2023-11-22 21:17:12,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 21:17:12,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 21:17:12,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 21:17:12,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 21:17:12,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 21:17:12,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 21:17:12,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 21:17:12,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 21:17:12,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (1/1) ... [2023-11-22 21:17:12,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 21:17:12,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:12,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 21:17:12,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 21:17:12,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 21:17:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 21:17:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 21:17:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 21:17:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 21:17:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 21:17:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 21:17:12,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 21:17:12,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 21:17:12,643 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 21:17:12,645 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 21:17:12,822 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 21:17:12,841 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 21:17:12,841 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 21:17:12,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:17:12 BoogieIcfgContainer [2023-11-22 21:17:12,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 21:17:12,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 21:17:12,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 21:17:12,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 21:17:12,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:17:11" (1/3) ... [2023-11-22 21:17:12,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14440cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:17:12, skipping insertion in model container [2023-11-22 21:17:12,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:17:12" (2/3) ... [2023-11-22 21:17:12,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14440cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:17:12, skipping insertion in model container [2023-11-22 21:17:12,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:17:12" (3/3) ... [2023-11-22 21:17:12,849 INFO L112 eAbstractionObserver]: Analyzing ICFG calendar.i [2023-11-22 21:17:12,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 21:17:12,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 21:17:12,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 21:17:12,903 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ff71aaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 21:17:12,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 21:17:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 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) [2023-11-22 21:17:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-22 21:17:12,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:12,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:12,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:12,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash -647829618, now seen corresponding path program 1 times [2023-11-22 21:17:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:12,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346140076] [2023-11-22 21:17:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:12,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:13,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:13,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346140076] [2023-11-22 21:17:13,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346140076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:17:13,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:17:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 21:17:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093663825] [2023-11-22 21:17:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:17:13,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 21:17:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 21:17:13,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 21:17:13,057 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:13,072 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2023-11-22 21:17:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 21:17:13,074 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2023-11-22 21:17:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:13,079 INFO L225 Difference]: With dead ends: 32 [2023-11-22 21:17:13,080 INFO L226 Difference]: Without dead ends: 17 [2023-11-22 21:17:13,082 INFO L412 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 [2023-11-22 21:17:13,085 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:13,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:17:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-22 21:17:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-22 21:17:13,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:13,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-11-22 21:17:13,109 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 9 [2023-11-22 21:17:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:13,110 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-11-22 21:17:13,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:13,110 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2023-11-22 21:17:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-22 21:17:13,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:13,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:13,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 21:17:13,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:13,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash 837082589, now seen corresponding path program 1 times [2023-11-22 21:17:13,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815835878] [2023-11-22 21:17:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:13,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:13,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815835878] [2023-11-22 21:17:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815835878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:17:13,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:17:13,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 21:17:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483425443] [2023-11-22 21:17:13,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:17:13,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:17:13,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:17:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 21:17:13,297 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:13,351 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2023-11-22 21:17:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:17:13,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-11-22 21:17:13,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:13,352 INFO L225 Difference]: With dead ends: 34 [2023-11-22 21:17:13,352 INFO L226 Difference]: Without dead ends: 22 [2023-11-22 21:17:13,352 INFO L412 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 [2023-11-22 21:17:13,353 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:13,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:17:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-22 21:17:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-22 21:17:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-11-22 21:17:13,358 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 11 [2023-11-22 21:17:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:13,358 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-11-22 21:17:13,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-11-22 21:17:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-22 21:17:13,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:13,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:13,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 21:17:13,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:13,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:13,360 INFO L85 PathProgramCache]: Analyzing trace with hash 922978179, now seen corresponding path program 1 times [2023-11-22 21:17:13,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:13,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567834894] [2023-11-22 21:17:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:13,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:13,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567834894] [2023-11-22 21:17:13,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567834894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:17:13,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:17:13,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 21:17:13,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139467914] [2023-11-22 21:17:13,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:17:13,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:17:13,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:17:13,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:17:13,659 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:13,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:13,991 INFO L93 Difference]: Finished difference Result 77 states and 104 transitions. [2023-11-22 21:17:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 21:17:13,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-22 21:17:13,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:13,993 INFO L225 Difference]: With dead ends: 77 [2023-11-22 21:17:13,993 INFO L226 Difference]: Without dead ends: 67 [2023-11-22 21:17:13,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2023-11-22 21:17:13,995 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 85 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:13,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 152 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 21:17:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-22 21:17:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 26. [2023-11-22 21:17:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 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) [2023-11-22 21:17:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-11-22 21:17:14,000 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 16 [2023-11-22 21:17:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:14,000 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-22 21:17:14,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-22 21:17:14,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 21:17:14,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:14,001 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:14,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 21:17:14,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:14,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2074594487, now seen corresponding path program 1 times [2023-11-22 21:17:14,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:14,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129315400] [2023-11-22 21:17:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 21:17:14,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129315400] [2023-11-22 21:17:14,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129315400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:17:14,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:17:14,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 21:17:14,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420745199] [2023-11-22 21:17:14,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:17:14,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 21:17:14,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 21:17:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 21:17:14,119 INFO L87 Difference]: Start difference. First operand 26 states and 35 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) [2023-11-22 21:17:14,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:14,162 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2023-11-22 21:17:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:17:14,163 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 18 [2023-11-22 21:17:14,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:14,164 INFO L225 Difference]: With dead ends: 49 [2023-11-22 21:17:14,164 INFO L226 Difference]: Without dead ends: 37 [2023-11-22 21:17:14,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:17:14,165 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:14,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 38 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:17:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-22 21:17:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2023-11-22 21:17:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2023-11-22 21:17:14,169 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 18 [2023-11-22 21:17:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:14,170 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-11-22 21:17:14,170 INFO L496 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) [2023-11-22 21:17:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-11-22 21:17:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 21:17:14,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:14,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:14,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 21:17:14,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:14,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2074534905, now seen corresponding path program 1 times [2023-11-22 21:17:14,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:14,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370215048] [2023-11-22 21:17:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:14,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 21:17:14,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:14,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370215048] [2023-11-22 21:17:14,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370215048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:17:14,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:17:14,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 21:17:14,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012919340] [2023-11-22 21:17:14,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:17:14,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 21:17:14,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:14,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 21:17:14,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 21:17:14,204 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:14,233 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-11-22 21:17:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 21:17:14,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 18 [2023-11-22 21:17:14,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:14,234 INFO L225 Difference]: With dead ends: 33 [2023-11-22 21:17:14,234 INFO L226 Difference]: Without dead ends: 31 [2023-11-22 21:17:14,234 INFO L412 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 [2023-11-22 21:17:14,235 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:14,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:17:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-22 21:17:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-22 21:17:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-11-22 21:17:14,239 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 18 [2023-11-22 21:17:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:14,239 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-11-22 21:17:14,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-11-22 21:17:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 21:17:14,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:14,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:14,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 21:17:14,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:14,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash -299587125, now seen corresponding path program 1 times [2023-11-22 21:17:14,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:14,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343726481] [2023-11-22 21:17:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:14,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:14,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:14,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343726481] [2023-11-22 21:17:14,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343726481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 21:17:14,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 21:17:14,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 21:17:14,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860330835] [2023-11-22 21:17:14,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 21:17:14,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 21:17:14,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:14,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 21:17:14,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 21:17:14,381 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:14,468 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-11-22 21:17:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 21:17:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-22 21:17:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:14,469 INFO L225 Difference]: With dead ends: 42 [2023-11-22 21:17:14,469 INFO L226 Difference]: Without dead ends: 40 [2023-11-22 21:17:14,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-22 21:17:14,470 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:14,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 78 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:17:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-22 21:17:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2023-11-22 21:17:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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) [2023-11-22 21:17:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2023-11-22 21:17:14,474 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 18 [2023-11-22 21:17:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:14,475 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2023-11-22 21:17:14,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2023-11-22 21:17:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 21:17:14,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:14,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:14,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 21:17:14,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:14,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:14,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1538754257, now seen corresponding path program 1 times [2023-11-22 21:17:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:14,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685896158] [2023-11-22 21:17:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:14,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685896158] [2023-11-22 21:17:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685896158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:17:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183601040] [2023-11-22 21:17:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:14,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:14,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:14,605 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) [2023-11-22 21:17:14,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 21:17:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:14,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-22 21:17:14,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:17:14,725 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 [2023-11-22 21:17:14,729 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 [2023-11-22 21:17:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:14,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:17:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:14,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183601040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:17:14,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:17:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-11-22 21:17:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455895674] [2023-11-22 21:17:14,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:17:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 21:17:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 21:17:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 21:17:14,868 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:14,951 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2023-11-22 21:17:14,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 21:17:14,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-22 21:17:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:14,953 INFO L225 Difference]: With dead ends: 67 [2023-11-22 21:17:14,953 INFO L226 Difference]: Without dead ends: 39 [2023-11-22 21:17:14,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-22 21:17:14,954 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:14,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 118 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 21:17:14,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-22 21:17:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-22 21:17:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 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) [2023-11-22 21:17:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2023-11-22 21:17:14,959 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 24 [2023-11-22 21:17:14,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:14,960 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2023-11-22 21:17:14,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:14,960 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2023-11-22 21:17:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-22 21:17:14,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:14,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:14,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 21:17:15,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:15,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:15,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1070935369, now seen corresponding path program 2 times [2023-11-22 21:17:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602025401] [2023-11-22 21:17:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:15,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:15,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602025401] [2023-11-22 21:17:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602025401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:17:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027025818] [2023-11-22 21:17:15,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:17:15,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:15,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:15,575 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) [2023-11-22 21:17:15,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 21:17:15,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:17:15,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:17:15,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-22 21:17:15,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:17:15,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:17:15,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 1 [2023-11-22 21:17:15,800 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 [2023-11-22 21:17:15,802 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 [2023-11-22 21:17:15,816 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:17:15,816 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 1 case distinctions, treesize of input 80 treesize of output 65 [2023-11-22 21:17:15,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-22 21:17:15,837 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-22 21:17:15,838 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 15 treesize of output 15 [2023-11-22 21:17:16,052 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 87 treesize of output 63 [2023-11-22 21:17:16,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 63 treesize of output 43 [2023-11-22 21:17:16,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:16,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2023-11-22 21:17:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:16,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:17:16,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:16,340 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 53 [2023-11-22 21:17:16,345 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:16,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:16,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2023-11-22 21:17:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:16,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027025818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:17:16,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:17:16,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 25 [2023-11-22 21:17:16,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254167091] [2023-11-22 21:17:16,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:17:16,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-22 21:17:16,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:16,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-22 21:17:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-11-22 21:17:16,382 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 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) [2023-11-22 21:17:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:17,628 INFO L93 Difference]: Finished difference Result 127 states and 156 transitions. [2023-11-22 21:17:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-22 21:17:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 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 29 [2023-11-22 21:17:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:17,629 INFO L225 Difference]: With dead ends: 127 [2023-11-22 21:17:17,629 INFO L226 Difference]: Without dead ends: 112 [2023-11-22 21:17:17,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=637, Invalid=1813, Unknown=0, NotChecked=0, Total=2450 [2023-11-22 21:17:17,631 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 310 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:17,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 424 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 21:17:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-22 21:17:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 47. [2023-11-22 21:17:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2023-11-22 21:17:17,637 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2023-11-22 21:17:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:17,637 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2023-11-22 21:17:17,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 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) [2023-11-22 21:17:17,638 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2023-11-22 21:17:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-22 21:17:17,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:17,638 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:17,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-22 21:17:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-22 21:17:17,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:17,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:17,839 INFO L85 PathProgramCache]: Analyzing trace with hash 153351697, now seen corresponding path program 1 times [2023-11-22 21:17:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701342264] [2023-11-22 21:17:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:17,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:18,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:18,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701342264] [2023-11-22 21:17:18,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701342264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:17:18,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247215663] [2023-11-22 21:17:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:18,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:18,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:18,273 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) [2023-11-22 21:17:18,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 21:17:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:18,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-22 21:17:18,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:17:18,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:17:18,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 1 [2023-11-22 21:17:18,479 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:17:18,480 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 1 case distinctions, treesize of input 80 treesize of output 65 [2023-11-22 21:17:18,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-22 21:17:18,499 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-22 21:17:18,500 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 15 treesize of output 15 [2023-11-22 21:17:18,506 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 [2023-11-22 21:17:18,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-22 21:17:18,683 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 87 treesize of output 63 [2023-11-22 21:17:18,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 63 treesize of output 43 [2023-11-22 21:17:18,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:18,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2023-11-22 21:17:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:18,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:17:18,932 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_17| Int) (v_ArrVal_274 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_17| v_ArrVal_274) |c_ULTIMATE.start_main_~l~0#1.base|))) (or (< (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) 2) (< 0 (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_17|) 0))))) is different from false [2023-11-22 21:17:19,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:19,028 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 53 [2023-11-22 21:17:19,031 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:19,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:19,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2023-11-22 21:17:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-11-22 21:17:19,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247215663] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:17:19,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:17:19,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 25 [2023-11-22 21:17:19,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62135889] [2023-11-22 21:17:19,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:17:19,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-22 21:17:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-22 21:17:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=478, Unknown=1, NotChecked=44, Total=600 [2023-11-22 21:17:19,076 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:21,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:21,005 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2023-11-22 21:17:21,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-22 21:17:21,006 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 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 31 [2023-11-22 21:17:21,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:21,006 INFO L225 Difference]: With dead ends: 116 [2023-11-22 21:17:21,006 INFO L226 Difference]: Without dead ends: 114 [2023-11-22 21:17:21,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=883, Invalid=2542, Unknown=1, NotChecked=114, Total=3540 [2023-11-22 21:17:21,008 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 285 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:21,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 334 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 310 Invalid, 0 Unknown, 112 Unchecked, 0.3s Time] [2023-11-22 21:17:21,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-22 21:17:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 50. [2023-11-22 21:17:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-11-22 21:17:21,013 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 31 [2023-11-22 21:17:21,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:21,014 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-11-22 21:17:21,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-11-22 21:17:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-22 21:17:21,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:21,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:21,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 21:17:21,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:21,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:21,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:21,227 INFO L85 PathProgramCache]: Analyzing trace with hash 345176309, now seen corresponding path program 3 times [2023-11-22 21:17:21,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:21,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898947705] [2023-11-22 21:17:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:21,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:21,602 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898947705] [2023-11-22 21:17:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898947705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:17:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417037726] [2023-11-22 21:17:21,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 21:17:21,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:21,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:21,604 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) [2023-11-22 21:17:21,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 21:17:21,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-22 21:17:21,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:17:21,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-22 21:17:21,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:17:21,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 21:17:21,742 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 [2023-11-22 21:17:21,747 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 [2023-11-22 21:17:21,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:17:21,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:17:21,838 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:17:21,839 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 1 case distinctions, treesize of input 20 treesize of output 23 [2023-11-22 21:17:21,851 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:17:21,852 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 1 case distinctions, treesize of input 45 treesize of output 36 [2023-11-22 21:17:21,870 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-11-22 21:17:21,870 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 1 case distinctions, treesize of input 21 treesize of output 31 [2023-11-22 21:17:21,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:17:21,886 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-22 21:17:21,886 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 15 treesize of output 15 [2023-11-22 21:17:22,452 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 21:17:22,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 133 treesize of output 139 [2023-11-22 21:17:22,512 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 21:17:22,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 117 [2023-11-22 21:17:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:23,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:17:24,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:24,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 90 [2023-11-22 21:17:24,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:24,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 81 [2023-11-22 21:17:24,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:24,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 276 [2023-11-22 21:17:24,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:24,408 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 251 treesize of output 220 [2023-11-22 21:17:24,413 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 375 treesize of output 351 [2023-11-22 21:17:24,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:24,427 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 346 treesize of output 283 [2023-11-22 21:17:24,858 INFO L349 Elim1Store]: treesize reduction 224, result has 71.6 percent of original size [2023-11-22 21:17:24,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 481 treesize of output 925 [2023-11-22 21:17:24,887 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 1514 treesize of output 1346 [2023-11-22 21:17:25,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:25,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 216 treesize of output 239 [2023-11-22 21:17:25,093 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 565 treesize of output 533 [2023-11-22 21:17:25,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:25,157 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 189 treesize of output 194 [2023-11-22 21:17:25,200 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 748 treesize of output 698 [2023-11-22 21:17:25,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 117 treesize of output 109 [2023-11-22 21:17:25,271 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 446 treesize of output 424 [2023-11-22 21:17:25,303 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 696 treesize of output 646 [2023-11-22 21:17:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:30,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417037726] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:17:30,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:17:30,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 10] total 24 [2023-11-22 21:17:30,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731025032] [2023-11-22 21:17:30,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:17:30,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-22 21:17:30,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-22 21:17:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2023-11-22 21:17:30,589 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 24 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:32,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:32,495 INFO L93 Difference]: Finished difference Result 168 states and 207 transitions. [2023-11-22 21:17:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-22 21:17:32,496 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 24 states have internal predecessors, (95), 0 states have call successors, (0), 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 37 [2023-11-22 21:17:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:32,496 INFO L225 Difference]: With dead ends: 168 [2023-11-22 21:17:32,496 INFO L226 Difference]: Without dead ends: 127 [2023-11-22 21:17:32,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=394, Invalid=2156, Unknown=0, NotChecked=0, Total=2550 [2023-11-22 21:17:32,497 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 245 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:32,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 582 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 373 Invalid, 3 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 21:17:32,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-22 21:17:32,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 85. [2023-11-22 21:17:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2976190476190477) internal successors, (109), 84 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2023-11-22 21:17:32,510 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 37 [2023-11-22 21:17:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:32,512 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2023-11-22 21:17:32,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 24 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2023-11-22 21:17:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-22 21:17:32,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:32,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:32,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 21:17:32,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:32,717 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:32,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2036521827, now seen corresponding path program 2 times [2023-11-22 21:17:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:32,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820330859] [2023-11-22 21:17:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:33,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820330859] [2023-11-22 21:17:33,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820330859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:17:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845415463] [2023-11-22 21:17:33,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:17:33,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:33,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:33,377 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) [2023-11-22 21:17:33,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 21:17:33,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:17:33,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:17:33,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-22 21:17:33,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:17:33,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:17:33,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 1 [2023-11-22 21:17:33,598 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 [2023-11-22 21:17:33,600 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 [2023-11-22 21:17:33,610 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:17:33,610 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 1 case distinctions, treesize of input 80 treesize of output 65 [2023-11-22 21:17:33,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-22 21:17:33,633 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 21:17:33,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 21:17:33,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:17:33,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:33,742 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 141 treesize of output 106 [2023-11-22 21:17:33,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:33,749 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-11-22 21:17:33,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-11-22 21:17:33,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 77 [2023-11-22 21:17:33,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:33,758 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 113 treesize of output 97 [2023-11-22 21:17:33,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:17:34,307 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 21:17:34,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 195 treesize of output 157 [2023-11-22 21:17:34,368 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 21:17:34,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 99 treesize of output 127 [2023-11-22 21:17:35,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:35,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2023-11-22 21:17:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:35,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:17:35,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:35,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 65 [2023-11-22 21:17:35,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:35,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2023-11-22 21:17:35,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:35,711 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 105 [2023-11-22 21:17:35,726 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:35,728 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 99 treesize of output 81 [2023-11-22 21:17:35,731 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 96 treesize of output 76 [2023-11-22 21:17:35,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:35,737 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 53 [2023-11-22 21:17:35,739 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:35,740 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 47 treesize of output 35 [2023-11-22 21:17:35,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:35,840 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 59 [2023-11-22 21:17:35,844 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:35,845 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:35,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:35,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 13 [2023-11-22 21:17:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:35,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845415463] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:17:35,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:17:35,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 31 [2023-11-22 21:17:35,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741200614] [2023-11-22 21:17:35,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:17:35,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-22 21:17:35,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-22 21:17:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=829, Unknown=5, NotChecked=0, Total=930 [2023-11-22 21:17:35,903 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:39,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:39,808 INFO L93 Difference]: Finished difference Result 220 states and 267 transitions. [2023-11-22 21:17:39,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-22 21:17:39,809 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 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 44 [2023-11-22 21:17:39,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:39,812 INFO L225 Difference]: With dead ends: 220 [2023-11-22 21:17:39,813 INFO L226 Difference]: Without dead ends: 218 [2023-11-22 21:17:39,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1487, Invalid=4828, Unknown=5, NotChecked=0, Total=6320 [2023-11-22 21:17:39,817 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 477 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:39,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 724 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 21:17:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-22 21:17:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 96. [2023-11-22 21:17:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 95 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2023-11-22 21:17:39,834 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 44 [2023-11-22 21:17:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:39,835 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2023-11-22 21:17:39,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 31 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2023-11-22 21:17:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-22 21:17:39,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:39,836 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:39,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 21:17:40,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-22 21:17:40,046 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:40,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:40,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2137448629, now seen corresponding path program 4 times [2023-11-22 21:17:40,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:40,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178240274] [2023-11-22 21:17:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:40,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:40,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:40,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178240274] [2023-11-22 21:17:40,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178240274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:17:40,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279231040] [2023-11-22 21:17:40,887 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 21:17:40,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:40,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:40,900 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) [2023-11-22 21:17:40,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 21:17:41,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 21:17:41,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:17:41,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-22 21:17:41,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:17:41,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:17:41,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 21:17:41,147 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 [2023-11-22 21:17:41,158 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:17:41,158 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 1 case distinctions, treesize of input 56 treesize of output 41 [2023-11-22 21:17:41,178 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 21:17:41,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 21:17:41,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-22 21:17:41,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:17:41,303 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-11-22 21:17:41,304 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 1 case distinctions, treesize of input 21 treesize of output 31 [2023-11-22 21:17:41,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:17:41,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:41,316 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 101 treesize of output 66 [2023-11-22 21:17:41,335 INFO L349 Elim1Store]: treesize reduction 64, result has 46.2 percent of original size [2023-11-22 21:17:41,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 70 [2023-11-22 21:17:41,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:41,364 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-11-22 21:17:41,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-11-22 21:17:42,124 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 21:17:42,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 181 treesize of output 159 [2023-11-22 21:17:42,180 INFO L349 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-11-22 21:17:42,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 137 [2023-11-22 21:17:42,749 INFO L349 Elim1Store]: treesize reduction 84, result has 21.5 percent of original size [2023-11-22 21:17:42,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 72 [2023-11-22 21:17:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 21:17:42,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:17:43,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:43,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 88 [2023-11-22 21:17:43,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:43,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 82 [2023-11-22 21:17:43,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:43,201 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 138 [2023-11-22 21:17:43,204 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:43,206 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 132 treesize of output 114 [2023-11-22 21:17:43,209 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 129 treesize of output 105 [2023-11-22 21:17:43,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:43,215 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 82 [2023-11-22 21:17:43,218 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:43,219 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 76 treesize of output 64 [2023-11-22 21:17:43,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:43,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 80 [2023-11-22 21:17:43,350 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:43,351 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:43,351 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:43,354 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 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-22 21:17:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 21:17:43,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279231040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:17:43,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:17:43,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 36 [2023-11-22 21:17:43,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034300870] [2023-11-22 21:17:43,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:17:43,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-22 21:17:43,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:43,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-22 21:17:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2023-11-22 21:17:43,392 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:49,431 INFO L93 Difference]: Finished difference Result 383 states and 466 transitions. [2023-11-22 21:17:49,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-11-22 21:17:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-22 21:17:49,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:49,433 INFO L225 Difference]: With dead ends: 383 [2023-11-22 21:17:49,433 INFO L226 Difference]: Without dead ends: 368 [2023-11-22 21:17:49,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3441 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2557, Invalid=9433, Unknown=0, NotChecked=0, Total=11990 [2023-11-22 21:17:49,438 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 702 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:49,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 863 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 21:17:49,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-11-22 21:17:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 89. [2023-11-22 21:17:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 88 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2023-11-22 21:17:49,470 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 47 [2023-11-22 21:17:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:49,470 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2023-11-22 21:17:49,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 36 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:49,470 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2023-11-22 21:17:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-22 21:17:49,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:49,471 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:49,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 21:17:49,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:49,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:49,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1022289721, now seen corresponding path program 5 times [2023-11-22 21:17:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:49,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931003198] [2023-11-22 21:17:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:49,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:50,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:50,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931003198] [2023-11-22 21:17:50,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931003198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:17:50,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044594694] [2023-11-22 21:17:50,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-22 21:17:50,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:50,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:50,276 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) [2023-11-22 21:17:50,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 21:17:50,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-22 21:17:50,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:17:50,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-22 21:17:50,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:17:50,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:17:50,571 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 [2023-11-22 21:17:50,574 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 [2023-11-22 21:17:50,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:17:50,629 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-11-22 21:17:50,629 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 1 case distinctions, treesize of input 21 treesize of output 31 [2023-11-22 21:17:50,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:17:50,647 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:17:50,647 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 1 case distinctions, treesize of input 20 treesize of output 23 [2023-11-22 21:17:50,663 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 21:17:50,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 21:17:50,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:17:50,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:50,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:50,746 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 21:17:50,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:50,758 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 21:17:50,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2023-11-22 21:17:50,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:50,765 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-11-22 21:17:50,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-11-22 21:17:50,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:17:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:51,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:17:51,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:51,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2023-11-22 21:17:51,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:51,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2023-11-22 21:17:51,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:51,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 127 [2023-11-22 21:17:51,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:51,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 118 [2023-11-22 21:17:51,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:51,858 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 66 [2023-11-22 21:17:51,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:51,865 INFO L349 Elim1Store]: treesize reduction 32, result has 11.1 percent of original size [2023-11-22 21:17:51,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 222 [2023-11-22 21:17:51,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:51,870 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 47 [2023-11-22 21:17:51,872 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:51,873 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 23 treesize of output 17 [2023-11-22 21:17:51,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:51,880 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 78 [2023-11-22 21:17:51,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:51,884 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 54 [2023-11-22 21:17:51,886 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:51,888 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 42 treesize of output 36 [2023-11-22 21:17:51,895 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-22 21:17:51,895 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 32 treesize of output 26 [2023-11-22 21:17:51,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:51,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 154 [2023-11-22 21:17:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:51,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044594694] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:17:51,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:17:51,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 20 [2023-11-22 21:17:51,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685183894] [2023-11-22 21:17:51,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:17:51,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-22 21:17:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-22 21:17:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-11-22 21:17:51,914 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 21 states, 21 states have (on average 5.0) internal successors, (105), 20 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) [2023-11-22 21:17:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:17:52,512 INFO L93 Difference]: Finished difference Result 181 states and 227 transitions. [2023-11-22 21:17:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 21:17:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 20 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 50 [2023-11-22 21:17:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:17:52,513 INFO L225 Difference]: With dead ends: 181 [2023-11-22 21:17:52,513 INFO L226 Difference]: Without dead ends: 102 [2023-11-22 21:17:52,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2023-11-22 21:17:52,514 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 66 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:17:52,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 589 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 21:17:52,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-22 21:17:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2023-11-22 21:17:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:17:52,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2023-11-22 21:17:52,524 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 50 [2023-11-22 21:17:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:17:52,525 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2023-11-22 21:17:52,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 20 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) [2023-11-22 21:17:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2023-11-22 21:17:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-22 21:17:52,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:17:52,527 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-22 21:17:52,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 21:17:52,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:52,739 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:17:52,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:17:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1717534623, now seen corresponding path program 6 times [2023-11-22 21:17:52,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:17:52,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609827138] [2023-11-22 21:17:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:17:52,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:17:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:17:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:54,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:17:54,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609827138] [2023-11-22 21:17:54,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609827138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:17:54,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821480758] [2023-11-22 21:17:54,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-22 21:17:54,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:17:54,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:17:54,111 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) [2023-11-22 21:17:54,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 21:17:54,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-22 21:17:54,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:17:54,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-22 21:17:54,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:17:54,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 21:17:54,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:17:54,422 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 [2023-11-22 21:17:54,434 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 21:17:54,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 21:17:54,440 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 [2023-11-22 21:17:54,444 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 56 treesize of output 33 [2023-11-22 21:17:54,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:17:54,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,578 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 101 treesize of output 66 [2023-11-22 21:17:54,590 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-11-22 21:17:54,591 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 1 case distinctions, treesize of input 72 treesize of output 49 [2023-11-22 21:17:54,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,611 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-11-22 21:17:54,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2023-11-22 21:17:54,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,622 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 21 treesize of output 23 [2023-11-22 21:17:54,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:17:54,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:17:54,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,814 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 21:17:54,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 177 treesize of output 100 [2023-11-22 21:17:54,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,824 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-11-22 21:17:54,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2023-11-22 21:17:54,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 41 [2023-11-22 21:17:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:54,839 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 21:17:54,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:17:56,139 INFO L349 Elim1Store]: treesize reduction 40, result has 76.3 percent of original size [2023-11-22 21:17:56,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 321 treesize of output 261 [2023-11-22 21:17:56,267 INFO L349 Elim1Store]: treesize reduction 56, result has 66.9 percent of original size [2023-11-22 21:17:56,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 209 [2023-11-22 21:17:58,217 INFO L349 Elim1Store]: treesize reduction 28, result has 20.0 percent of original size [2023-11-22 21:17:58,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 48 [2023-11-22 21:17:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:17:58,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:17:58,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:58,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 146 treesize of output 134 [2023-11-22 21:17:58,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:58,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 116 [2023-11-22 21:17:58,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:58,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 220 [2023-11-22 21:17:58,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:58,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 202 [2023-11-22 21:17:58,566 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_33 (Array Int Int)) (v_arrayElimArr_35 (Array Int Int)) (v_ArrVal_944 (Array Int Int)) (v_arrayElimArr_34 (Array Int Int)) (v_arrayElimArr_36 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_42| Int) (v_ArrVal_940 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_33 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_35) |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_34)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_36) |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_33))) (let ((.cse4 (select (select .cse6 .cse2) 0)) (.cse5 (select (select .cse3 .cse2) 0))) (let ((.cse0 (select (store (store |c_#memory_int| .cse2 v_ArrVal_940) |v_ULTIMATE.start_main_~l~0#1.base_42| v_ArrVal_944) (select (select .cse6 .cse4) .cse5))) (.cse1 (select (select .cse3 .cse4) .cse5))) (or (not (= 3 (select .cse0 (+ 8 .cse1)))) (not (= (select |c_#valid| .cse2) 0)) (not (= (select v_arrayElimArr_34 0) 0)) (not (= (select v_arrayElimArr_35 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (< 1 (select .cse0 (+ 4 .cse1))) (not (= 0 (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_42|))) (not (= (select v_arrayElimArr_36 0) |c_ULTIMATE.start_main_~l~0#1.base|)))))))) is different from false [2023-11-22 21:17:58,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:58,670 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 350 treesize of output 288 [2023-11-22 21:17:58,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:58,676 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 278 treesize of output 216 [2023-11-22 21:17:58,679 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:58,679 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:58,680 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:17:58,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 106 [2023-11-22 21:17:58,686 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:17:58,687 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 646 treesize of output 616 [2023-11-22 21:17:58,692 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 329 treesize of output 279 [2023-11-22 21:17:58,695 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 273 treesize of output 229 [2023-11-22 21:17:59,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:59,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 182 [2023-11-22 21:17:59,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:59,153 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 2084 treesize of output 2012 [2023-11-22 21:17:59,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 540 treesize of output 536 [2023-11-22 21:17:59,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 536 treesize of output 520 [2023-11-22 21:17:59,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 520 treesize of output 512 [2023-11-22 21:17:59,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:17:59,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 512 treesize of output 621 [2023-11-22 21:17:59,293 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 82 treesize of output 80 [2023-11-22 21:17:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2023-11-22 21:17:59,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821480758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:17:59,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:17:59,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 41 [2023-11-22 21:17:59,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815902895] [2023-11-22 21:17:59,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:17:59,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-22 21:17:59,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:17:59,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-22 21:17:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1430, Unknown=2, NotChecked=76, Total=1640 [2023-11-22 21:17:59,631 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:18:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:18:12,054 INFO L93 Difference]: Finished difference Result 322 states and 387 transitions. [2023-11-22 21:18:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-11-22 21:18:12,055 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 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 55 [2023-11-22 21:18:12,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:18:12,056 INFO L225 Difference]: With dead ends: 322 [2023-11-22 21:18:12,056 INFO L226 Difference]: Without dead ends: 282 [2023-11-22 21:18:12,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 100 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4709 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=3369, Invalid=13145, Unknown=2, NotChecked=254, Total=16770 [2023-11-22 21:18:12,059 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 684 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 21:18:12,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1258 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1247 Invalid, 0 Unknown, 263 Unchecked, 1.3s Time] [2023-11-22 21:18:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-22 21:18:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 94. [2023-11-22 21:18:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:18:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2023-11-22 21:18:12,078 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 55 [2023-11-22 21:18:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:18:12,078 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2023-11-22 21:18:12,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:18:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2023-11-22 21:18:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-22 21:18:12,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:18:12,079 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:18:12,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 21:18:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-22 21:18:12,281 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:18:12,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:18:12,281 INFO L85 PathProgramCache]: Analyzing trace with hash 493282089, now seen corresponding path program 3 times [2023-11-22 21:18:12,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:18:12,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457231393] [2023-11-22 21:18:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:18:12,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:18:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:18:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:18:13,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:18:13,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457231393] [2023-11-22 21:18:13,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457231393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:18:13,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432935608] [2023-11-22 21:18:13,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 21:18:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:18:13,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:18:13,106 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) [2023-11-22 21:18:13,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 21:18:13,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-22 21:18:13,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:18:13,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 84 conjunts are in the unsatisfiable core [2023-11-22 21:18:13,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:18:13,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:18:13,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 21:18:13,417 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:18:13,418 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 1 case distinctions, treesize of input 56 treesize of output 41 [2023-11-22 21:18:13,438 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-11-22 21:18:13,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 16 treesize of output 18 [2023-11-22 21:18:13,455 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 [2023-11-22 21:18:13,458 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 [2023-11-22 21:18:13,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:18:13,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,572 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 100 treesize of output 65 [2023-11-22 21:18:13,581 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-11-22 21:18:13,581 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 1 case distinctions, treesize of input 87 treesize of output 64 [2023-11-22 21:18:13,610 INFO L349 Elim1Store]: treesize reduction 100, result has 25.9 percent of original size [2023-11-22 21:18:13,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 49 [2023-11-22 21:18:13,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,630 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 21 treesize of output 23 [2023-11-22 21:18:13,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:18:13,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:18:13,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,799 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 21:18:13,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 176 treesize of output 99 [2023-11-22 21:18:13,811 INFO L349 Elim1Store]: treesize reduction 37, result has 47.1 percent of original size [2023-11-22 21:18:13,811 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 1 case distinctions, treesize of input 111 treesize of output 80 [2023-11-22 21:18:13,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,827 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 21:18:13,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:18:13,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:18:13,846 INFO L349 Elim1Store]: treesize reduction 33, result has 32.7 percent of original size [2023-11-22 21:18:13,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 29 [2023-11-22 21:18:15,568 INFO L349 Elim1Store]: treesize reduction 48, result has 86.7 percent of original size [2023-11-22 21:18:15,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 16 new quantified variables, introduced 45 case distinctions, treesize of input 344 treesize of output 470 [2023-11-22 21:18:15,889 INFO L349 Elim1Store]: treesize reduction 72, result has 80.1 percent of original size [2023-11-22 21:18:15,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 144 treesize of output 392 [2023-11-22 21:19:30,111 INFO L349 Elim1Store]: treesize reduction 136, result has 37.9 percent of original size [2023-11-22 21:19:30,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 131 treesize of output 149 [2023-11-22 21:19:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:19:30,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:19:30,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:30,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 164 [2023-11-22 21:19:30,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:30,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 143 [2023-11-22 21:19:30,515 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_43 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_49| Int) (v_ArrVal_1111 (Array Int Int)) (v_arrayElimArr_42 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_49| v_arrayElimArr_43)) (.cse6 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_49| v_arrayElimArr_42))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_49| v_ArrVal_1111)) (.cse1 (select (select .cse6 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse3 (select .cse0 (select (select .cse6 .cse1) .cse2))) (.cse4 (select (select .cse5 .cse1) .cse2))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_42 0))) (not (= (select (select .cse0 .cse1) (+ .cse2 4)) 1)) (not (= (select .cse3 (+ .cse4 4)) 0)) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_49|))) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_43 0))) (< (select .cse3 (+ 8 .cse4)) 2)))))) is different from false [2023-11-22 21:19:30,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:30,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 284 treesize of output 269 [2023-11-22 21:19:30,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:30,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 263 treesize of output 248 [2023-11-22 21:19:30,633 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_44 (Array Int Int)) (v_arrayElimArr_43 (Array Int Int)) (v_arrayElimArr_45 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_49| Int) (v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1111 (Array Int Int)) (v_arrayElimArr_42 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_42 0))) (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_44) |v_ULTIMATE.start_main_~l~0#1.base_49| v_arrayElimArr_43)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_45) |v_ULTIMATE.start_main_~l~0#1.base_49| v_arrayElimArr_42))) (let ((.cse3 (store (store |c_#memory_int| .cse2 v_ArrVal_1101) |v_ULTIMATE.start_main_~l~0#1.base_49| v_ArrVal_1111)) (.cse4 (select (select .cse7 .cse2) 0)) (.cse5 (select (select .cse6 .cse2) 0))) (let ((.cse0 (select .cse3 (select (select .cse7 .cse4) .cse5))) (.cse1 (select (select .cse6 .cse4) .cse5))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_44 0))) (< (select .cse0 (+ .cse1 8)) 2) (not (= (select v_arrayElimArr_45 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_49|) 0)) (not (= (select v_arrayElimArr_43 0) 0)) (not (= (select (select .cse3 .cse4) (+ 4 .cse5)) 1)) (not (= (select |c_#valid| .cse2) 0)) (not (= (select .cse0 (+ .cse1 4)) 0)))))))) is different from false [2023-11-22 21:19:30,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:30,738 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 425 treesize of output 351 [2023-11-22 21:19:30,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:30,743 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 341 treesize of output 267 [2023-11-22 21:19:30,746 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,746 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,747 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:30,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 145 [2023-11-22 21:19:30,752 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 180 treesize of output 162 [2023-11-22 21:19:30,754 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 154 treesize of output 128 [2023-11-22 21:19:30,756 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,757 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,757 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2023-11-22 21:19:30,772 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_241 Int) (v_arrayElimCell_240 Int) (|v_ULTIMATE.start_main_~l~0#1.base_49| Int) (v_ArrVal_1101 (Array Int Int)) (v_ArrVal_1111 (Array Int Int)) (v_ArrVal_1099 (Array Int Int))) (let ((.cse2 (store (store (store |c_#memory_int| v_arrayElimCell_240 v_ArrVal_1099) v_arrayElimCell_241 v_ArrVal_1101) |v_ULTIMATE.start_main_~l~0#1.base_49| v_ArrVal_1111))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse1 (store |c_#valid| v_arrayElimCell_240 1))) (or (< (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) 2) (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 0)) (not (= (select (store .cse1 v_arrayElimCell_241 1) |v_ULTIMATE.start_main_~l~0#1.base_49|) 0)) (not (= (select .cse1 v_arrayElimCell_241) 0)) (not (= (select (select .cse2 v_arrayElimCell_240) 4) 1)))))) is different from false [2023-11-22 21:19:30,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:30,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 75 [2023-11-22 21:19:30,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,839 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,839 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:19:30,841 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 0 case distinctions, treesize of input 66 treesize of output 50 [2023-11-22 21:19:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 27 not checked. [2023-11-22 21:19:30,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432935608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:19:30,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:19:30,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 40 [2023-11-22 21:19:30,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117429624] [2023-11-22 21:19:30,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:19:30,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-22 21:19:30,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:19:30,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-22 21:19:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1229, Unknown=3, NotChecked=216, Total=1560 [2023-11-22 21:19:30,889 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 40 states, 40 states have (on average 3.925) internal successors, (157), 40 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:19:56,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:19:56,627 INFO L93 Difference]: Finished difference Result 314 states and 381 transitions. [2023-11-22 21:19:56,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-11-22 21:19:56,627 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.925) internal successors, (157), 40 states have internal predecessors, (157), 0 states have call successors, (0), 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 57 [2023-11-22 21:19:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:19:56,628 INFO L225 Difference]: With dead ends: 314 [2023-11-22 21:19:56,628 INFO L226 Difference]: Without dead ends: 312 [2023-11-22 21:19:56,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 95 SyntacticMatches, 8 SemanticMatches, 141 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5670 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=3744, Invalid=15725, Unknown=3, NotChecked=834, Total=20306 [2023-11-22 21:19:56,631 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1270 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 801 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-22 21:19:56,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 984 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1592 Invalid, 0 Unknown, 801 Unchecked, 2.4s Time] [2023-11-22 21:19:56,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-22 21:19:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 105. [2023-11-22 21:19:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 104 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:19:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2023-11-22 21:19:56,652 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 57 [2023-11-22 21:19:56,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:19:56,652 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2023-11-22 21:19:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.925) internal successors, (157), 40 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:19:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2023-11-22 21:19:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-22 21:19:56,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:19:56,653 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-22 21:19:56,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 21:19:56,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-22 21:19:56,867 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:19:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:19:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1983532019, now seen corresponding path program 7 times [2023-11-22 21:19:56,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:19:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344585693] [2023-11-22 21:19:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:19:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:19:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:19:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:19:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:19:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344585693] [2023-11-22 21:19:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344585693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:19:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372346805] [2023-11-22 21:19:57,736 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-22 21:19:57,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:19:57,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:19:57,737 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) [2023-11-22 21:19:57,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 21:19:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:19:57,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-22 21:19:57,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:19:57,959 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 [2023-11-22 21:19:57,962 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 [2023-11-22 21:19:57,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:19:58,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:19:58,020 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-11-22 21:19:58,020 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 1 case distinctions, treesize of input 21 treesize of output 31 [2023-11-22 21:19:58,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:19:58,039 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 21:19:58,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 21:19:58,047 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 20 treesize of output 15 [2023-11-22 21:19:58,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:19:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,135 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 21:19:58,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2023-11-22 21:19:58,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,148 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-11-22 21:19:58,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2023-11-22 21:19:58,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,157 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 21:19:58,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:19:58,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:19:58,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,284 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 0 case distinctions, treesize of input 55 treesize of output 63 [2023-11-22 21:19:58,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:19:58,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,305 INFO L349 Elim1Store]: treesize reduction 64, result has 14.7 percent of original size [2023-11-22 21:19:58,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 136 treesize of output 85 [2023-11-22 21:19:58,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:19:58,315 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2023-11-22 21:19:58,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2023-11-22 21:19:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:19:59,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:19:59,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:59,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 133 [2023-11-22 21:19:59,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:59,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 112 [2023-11-22 21:19:59,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:59,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 219 [2023-11-22 21:19:59,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:59,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 198 [2023-11-22 21:19:59,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:59,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 363 treesize of output 349 [2023-11-22 21:19:59,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:19:59,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 328 [2023-11-22 21:20:00,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:00,729 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 189 [2023-11-22 21:20:00,732 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,732 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,738 INFO L349 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2023-11-22 21:20:00,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2760 treesize of output 2680 [2023-11-22 21:20:00,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:00,750 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1260 treesize of output 814 [2023-11-22 21:20:00,754 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,754 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,755 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,756 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 1364 treesize of output 1310 [2023-11-22 21:20:00,784 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-11-22 21:20:00,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 59 treesize of output 49 [2023-11-22 21:20:00,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:00,794 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 177 [2023-11-22 21:20:00,797 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,797 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:00,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:00,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:00,843 INFO L349 Elim1Store]: treesize reduction 765, result has 3.2 percent of original size [2023-11-22 21:20:00,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 157330 treesize of output 143720 [2023-11-22 21:20:00,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:00,974 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 2875 treesize of output 1877 [2023-11-22 21:20:00,981 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,981 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,982 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,984 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 152 treesize of output 146 [2023-11-22 21:20:00,989 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 181 treesize of output 161 [2023-11-22 21:20:00,991 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 174 treesize of output 144 [2023-11-22 21:20:00,993 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 144 treesize of output 118 [2023-11-22 21:20:00,996 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,997 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:00,998 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:01,003 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-22 21:20:01,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 22 [2023-11-22 21:20:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:20:01,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372346805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:20:01,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:20:01,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 25 [2023-11-22 21:20:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134401882] [2023-11-22 21:20:01,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:20:01,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 21:20:01,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:20:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 21:20:01,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-11-22 21:20:01,016 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand has 26 states, 26 states have (on average 5.230769230769231) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:20:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:20:02,323 INFO L93 Difference]: Finished difference Result 212 states and 264 transitions. [2023-11-22 21:20:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 21:20:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.230769230769231) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 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 63 [2023-11-22 21:20:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:20:02,324 INFO L225 Difference]: With dead ends: 212 [2023-11-22 21:20:02,324 INFO L226 Difference]: Without dead ends: 120 [2023-11-22 21:20:02,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=126, Invalid=996, Unknown=0, NotChecked=0, Total=1122 [2023-11-22 21:20:02,325 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 119 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 21:20:02,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 901 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 21:20:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-22 21:20:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 110. [2023-11-22 21:20:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 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) [2023-11-22 21:20:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2023-11-22 21:20:02,341 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 63 [2023-11-22 21:20:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:20:02,341 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2023-11-22 21:20:02,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.230769230769231) internal successors, (136), 25 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:20:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2023-11-22 21:20:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-22 21:20:02,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:20:02,342 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-22 21:20:02,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 21:20:02,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-22 21:20:02,555 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:20:02,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:20:02,555 INFO L85 PathProgramCache]: Analyzing trace with hash 790689459, now seen corresponding path program 8 times [2023-11-22 21:20:02,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:20:02,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502660422] [2023-11-22 21:20:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:20:02,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:20:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:20:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 23 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:20:04,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:20:04,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502660422] [2023-11-22 21:20:04,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502660422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:20:04,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876437534] [2023-11-22 21:20:04,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 21:20:04,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:20:04,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:20:04,133 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) [2023-11-22 21:20:04,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 21:20:04,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 21:20:04,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:20:04,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 103 conjunts are in the unsatisfiable core [2023-11-22 21:20:04,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:20:04,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 21:20:04,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:20:04,412 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 [2023-11-22 21:20:04,414 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 [2023-11-22 21:20:04,424 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-22 21:20:04,425 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 1 case distinctions, treesize of input 45 treesize of output 36 [2023-11-22 21:20:04,445 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 21:20:04,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 21:20:04,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:20:04,558 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-11-22 21:20:04,558 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 1 case distinctions, treesize of input 21 treesize of output 31 [2023-11-22 21:20:04,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:20:04,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,568 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 86 treesize of output 57 [2023-11-22 21:20:04,598 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-11-22 21:20:04,598 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 1 case distinctions, treesize of input 57 treesize of output 44 [2023-11-22 21:20:04,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,619 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-11-22 21:20:04,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2023-11-22 21:20:04,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:20:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,796 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 21:20:04,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 158 treesize of output 91 [2023-11-22 21:20:04,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,816 INFO L349 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2023-11-22 21:20:04,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2023-11-22 21:20:04,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 36 [2023-11-22 21:20:04,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:04,835 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 21:20:04,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:20:05,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:20:05,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,068 INFO L349 Elim1Store]: treesize reduction 64, result has 14.7 percent of original size [2023-11-22 21:20:05,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 250 treesize of output 125 [2023-11-22 21:20:05,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,078 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 0 case distinctions, treesize of input 55 treesize of output 63 [2023-11-22 21:20:05,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:20:05,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:05,095 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2023-11-22 21:20:05,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 36 [2023-11-22 21:20:05,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 40 [2023-11-22 21:20:07,176 INFO L349 Elim1Store]: treesize reduction 56, result has 80.6 percent of original size [2023-11-22 21:20:07,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 429 treesize of output 379 [2023-11-22 21:20:07,401 INFO L349 Elim1Store]: treesize reduction 88, result has 69.6 percent of original size [2023-11-22 21:20:07,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 133 treesize of output 297 [2023-11-22 21:20:18,776 INFO L349 Elim1Store]: treesize reduction 28, result has 20.0 percent of original size [2023-11-22 21:20:18,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 32 [2023-11-22 21:20:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 23 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:20:18,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:20:19,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:19,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 306 treesize of output 270 [2023-11-22 21:20:19,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:19,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 264 treesize of output 228 [2023-11-22 21:20:19,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:19,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 488 treesize of output 452 [2023-11-22 21:20:19,230 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:19,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 410 [2023-11-22 21:20:19,249 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_66 (Array Int Int)) (v_arrayElimArr_65 (Array Int Int)) (v_arrayElimArr_68 (Array Int Int)) (v_arrayElimArr_67 (Array Int Int)) (v_ArrVal_1487 (Array Int Int)) (v_ArrVal_1495 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_65| Int)) (let ((.cse0 (select v_arrayElimArr_65 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_67) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_66)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_68) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_65))) (let ((.cse7 (select (select .cse6 .cse0) 0)) (.cse8 (select (select .cse3 .cse0) 0))) (let ((.cse4 (select (select .cse6 .cse7) .cse8)) (.cse5 (select (select .cse3 .cse7) .cse8))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_1487) |v_ULTIMATE.start_main_~l~0#1.base_65| v_ArrVal_1495) (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_67 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_68 0))) (not (= (select .cse1 (+ .cse2 4)) 1)) (not (= (select v_arrayElimArr_66 0) 0)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_65|) 0)) (< (select .cse1 (+ .cse2 8)) 3)))))))) is different from false [2023-11-22 21:20:19,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:19,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 638 treesize of output 602 [2023-11-22 21:20:19,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:19,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 596 treesize of output 560 [2023-11-22 21:20:19,374 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_66 (Array Int Int)) (v_arrayElimArr_65 (Array Int Int)) (v_arrayElimArr_68 (Array Int Int)) (v_arrayElimArr_67 (Array Int Int)) (v_arrayElimArr_69 (Array Int Int)) (v_ArrVal_1487 (Array Int Int)) (v_ArrVal_1484 (Array Int Int)) (v_ArrVal_1495 (Array Int Int)) (v_arrayElimArr_70 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_65| Int)) (let ((.cse4 (select v_arrayElimArr_68 0)) (.cse1 (select v_arrayElimArr_65 0))) (let ((.cse5 (store (store (store |c_#memory_$Pointer$.offset| .cse4 v_arrayElimArr_69) .cse1 v_arrayElimArr_67) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_66)) (.cse8 (store (store (store |c_#memory_$Pointer$.base| .cse4 v_arrayElimArr_70) .cse1 v_arrayElimArr_68) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_65))) (let ((.cse9 (select (select .cse8 .cse1) 0)) (.cse10 (select (select .cse5 .cse1) 0))) (let ((.cse6 (select (select .cse8 .cse9) .cse10)) (.cse7 (select (select .cse5 .cse9) .cse10))) (let ((.cse0 (store |c_#valid| .cse4 1)) (.cse2 (select (store (store (store |c_#memory_int| .cse4 v_ArrVal_1484) .cse1 v_ArrVal_1487) |v_ULTIMATE.start_main_~l~0#1.base_65| v_ArrVal_1495) (select (select .cse8 .cse6) .cse7))) (.cse3 (select (select .cse5 .cse6) .cse7))) (or (not (= (select v_arrayElimArr_66 0) 0)) (not (= (select v_arrayElimArr_69 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select v_arrayElimArr_70 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= 0 (select v_arrayElimArr_67 0))) (not (= (select (store .cse0 .cse1 1) |v_ULTIMATE.start_main_~l~0#1.base_65|) 0)) (< (select .cse2 (+ .cse3 8)) 3) (not (= (select |c_#valid| .cse4) 0)) (not (= (select .cse0 .cse1) 0)) (not (= (select .cse2 (+ .cse3 4)) 1))))))))) is different from false [2023-11-22 21:20:19,518 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:19,519 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 900 treesize of output 742 [2023-11-22 21:20:19,521 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:19,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:19,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:19,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:19,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:19,588 INFO L349 Elim1Store]: treesize reduction 769, result has 2.7 percent of original size [2023-11-22 21:20:19,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 141826 treesize of output 132660 [2023-11-22 21:20:20,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:20,054 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30672 treesize of output 20362 [2023-11-22 21:20:20,096 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,097 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,098 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,098 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,101 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 3086 treesize of output 2696 [2023-11-22 21:20:20,137 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 2752 treesize of output 2392 [2023-11-22 21:20:20,149 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 2386 treesize of output 2196 [2023-11-22 21:20:20,162 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 2187 treesize of output 1911 [2023-11-22 21:20:20,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:20,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 64 [2023-11-22 21:20:20,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,777 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:20,778 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 0 case distinctions, treesize of input 34 treesize of output 18 [2023-11-22 21:20:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 33 not checked. [2023-11-22 21:20:20,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876437534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:20:20,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:20:20,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 42 [2023-11-22 21:20:20,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227541723] [2023-11-22 21:20:20,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:20:20,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-22 21:20:20,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:20:20,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-22 21:20:20,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1441, Unknown=2, NotChecked=154, Total=1722 [2023-11-22 21:20:20,798 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand has 42 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 42 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:20:41,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:20:41,458 INFO L93 Difference]: Finished difference Result 317 states and 386 transitions. [2023-11-22 21:20:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-22 21:20:41,458 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 42 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-22 21:20:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:20:41,459 INFO L225 Difference]: With dead ends: 317 [2023-11-22 21:20:41,459 INFO L226 Difference]: Without dead ends: 277 [2023-11-22 21:20:41,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 124 SyntacticMatches, 7 SemanticMatches, 121 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3770 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=3119, Invalid=11407, Unknown=2, NotChecked=478, Total=15006 [2023-11-22 21:20:41,461 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1088 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 453 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-22 21:20:41,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 1211 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1078 Invalid, 0 Unknown, 453 Unchecked, 2.8s Time] [2023-11-22 21:20:41,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-22 21:20:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 110. [2023-11-22 21:20:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 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) [2023-11-22 21:20:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2023-11-22 21:20:41,483 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 68 [2023-11-22 21:20:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:20:41,483 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2023-11-22 21:20:41,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 42 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:20:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2023-11-22 21:20:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-22 21:20:41,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:20:41,484 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 21:20:41,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 21:20:41,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 21:20:41,699 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:20:41,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:20:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1419971835, now seen corresponding path program 4 times [2023-11-22 21:20:41,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:20:41,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609697434] [2023-11-22 21:20:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:20:41,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:20:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:20:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 19 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:20:43,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:20:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609697434] [2023-11-22 21:20:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609697434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:20:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253102210] [2023-11-22 21:20:43,225 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-22 21:20:43,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:20:43,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:20:43,226 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) [2023-11-22 21:20:43,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 21:20:43,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-22 21:20:43,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:20:43,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 107 conjunts are in the unsatisfiable core [2023-11-22 21:20:43,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:20:43,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 21:20:43,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:20:43,515 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 21:20:43,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 21:20:43,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-22 21:20:43,524 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 45 treesize of output 28 [2023-11-22 21:20:43,531 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 [2023-11-22 21:20:43,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:20:43,646 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2023-11-22 21:20:43,646 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 1 case distinctions, treesize of input 21 treesize of output 31 [2023-11-22 21:20:43,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:20:43,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,656 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 86 treesize of output 57 [2023-11-22 21:20:43,665 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-11-22 21:20:43,666 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 1 case distinctions, treesize of input 57 treesize of output 44 [2023-11-22 21:20:43,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,688 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-11-22 21:20:43,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2023-11-22 21:20:43,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:20:43,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,854 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 21:20:43,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 158 treesize of output 91 [2023-11-22 21:20:43,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,859 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 21:20:43,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:20:43,875 INFO L349 Elim1Store]: treesize reduction 37, result has 47.1 percent of original size [2023-11-22 21:20:43,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 52 [2023-11-22 21:20:43,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:43,902 INFO L349 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2023-11-22 21:20:43,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2023-11-22 21:20:44,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:20:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,130 INFO L349 Elim1Store]: treesize reduction 64, result has 14.7 percent of original size [2023-11-22 21:20:44,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 250 treesize of output 125 [2023-11-22 21:20:44,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,143 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2023-11-22 21:20:44,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 36 [2023-11-22 21:20:44,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 40 [2023-11-22 21:20:44,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:44,164 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 0 case distinctions, treesize of input 55 treesize of output 63 [2023-11-22 21:20:44,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:20:46,224 INFO L349 Elim1Store]: treesize reduction 56, result has 80.6 percent of original size [2023-11-22 21:20:46,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 429 treesize of output 379 [2023-11-22 21:20:46,460 INFO L349 Elim1Store]: treesize reduction 88, result has 69.6 percent of original size [2023-11-22 21:20:46,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 133 treesize of output 297 [2023-11-22 21:20:58,776 INFO L349 Elim1Store]: treesize reduction 28, result has 20.0 percent of original size [2023-11-22 21:20:58,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 42 [2023-11-22 21:20:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 19 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:20:58,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:20:59,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:59,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 306 treesize of output 270 [2023-11-22 21:20:59,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:59,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 264 treesize of output 228 [2023-11-22 21:20:59,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:59,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 488 treesize of output 452 [2023-11-22 21:20:59,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:59,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 410 [2023-11-22 21:20:59,680 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_77 (Array Int Int)) (v_arrayElimArr_79 (Array Int Int)) (v_arrayElimArr_78 (Array Int Int)) (v_ArrVal_1711 (Array Int Int)) (v_arrayElimArr_80 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_74| Int) (v_ArrVal_1706 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_77 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_79) |v_ULTIMATE.start_main_~l~0#1.base_74| v_arrayElimArr_78)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_80) |v_ULTIMATE.start_main_~l~0#1.base_74| v_arrayElimArr_77))) (let ((.cse7 (select (select .cse6 .cse0) 0)) (.cse8 (select (select .cse3 .cse0) 0))) (let ((.cse4 (select (select .cse6 .cse7) .cse8)) (.cse5 (select (select .cse3 .cse7) .cse8))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_1706) |v_ULTIMATE.start_main_~l~0#1.base_74| v_ArrVal_1711) (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= (select v_arrayElimArr_79 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_74|) 0)) (not (= (select .cse1 (+ 8 .cse2)) 2)) (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_80 0))) (< 0 (select .cse1 (+ 4 .cse2))) (not (= (select v_arrayElimArr_78 0) 0))))))))) is different from false [2023-11-22 21:20:59,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:59,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 638 treesize of output 602 [2023-11-22 21:20:59,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:59,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 596 treesize of output 560 [2023-11-22 21:20:59,816 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_77 (Array Int Int)) (v_arrayElimArr_79 (Array Int Int)) (v_arrayElimArr_78 (Array Int Int)) (v_ArrVal_1711 (Array Int Int)) (v_ArrVal_1696 (Array Int Int)) (v_arrayElimArr_80 (Array Int Int)) (v_arrayElimArr_82 (Array Int Int)) (v_arrayElimArr_81 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_74| Int) (v_ArrVal_1706 (Array Int Int))) (let ((.cse4 (select v_arrayElimArr_80 0)) (.cse1 (select v_arrayElimArr_77 0))) (let ((.cse5 (store (store (store |c_#memory_$Pointer$.offset| .cse4 v_arrayElimArr_81) .cse1 v_arrayElimArr_79) |v_ULTIMATE.start_main_~l~0#1.base_74| v_arrayElimArr_78)) (.cse8 (store (store (store |c_#memory_$Pointer$.base| .cse4 v_arrayElimArr_82) .cse1 v_arrayElimArr_80) |v_ULTIMATE.start_main_~l~0#1.base_74| v_arrayElimArr_77))) (let ((.cse9 (select (select .cse8 .cse1) 0)) (.cse10 (select (select .cse5 .cse1) 0))) (let ((.cse6 (select (select .cse8 .cse9) .cse10)) (.cse7 (select (select .cse5 .cse9) .cse10))) (let ((.cse2 (select (store (store (store |c_#memory_int| .cse4 v_ArrVal_1696) .cse1 v_ArrVal_1706) |v_ULTIMATE.start_main_~l~0#1.base_74| v_ArrVal_1711) (select (select .cse8 .cse6) .cse7))) (.cse3 (select (select .cse5 .cse6) .cse7)) (.cse0 (store |c_#valid| .cse4 1))) (or (not (= (select v_arrayElimArr_81 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select (store .cse0 .cse1 1) |v_ULTIMATE.start_main_~l~0#1.base_74|) 0)) (not (= 2 (select .cse2 (+ .cse3 8)))) (< 0 (select .cse2 (+ .cse3 4))) (not (= (select v_arrayElimArr_79 0) 0)) (not (= (select v_arrayElimArr_82 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select .cse0 .cse1) 0)) (not (= (select v_arrayElimArr_78 0) 0)) (not (= (select |c_#valid| .cse4) 0))))))))) is different from false [2023-11-22 21:20:59,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:20:59,961 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 900 treesize of output 742 [2023-11-22 21:20:59,964 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:59,964 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:20:59,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:59,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:20:59,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:00,028 INFO L349 Elim1Store]: treesize reduction 769, result has 2.7 percent of original size [2023-11-22 21:21:00,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 70834 treesize of output 66260 [2023-11-22 21:21:00,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:00,377 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30656 treesize of output 20346 [2023-11-22 21:21:00,420 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:00,420 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:00,421 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:00,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:00,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:00,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:00,424 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 3078 treesize of output 2688 [2023-11-22 21:21:00,460 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 2744 treesize of output 2384 [2023-11-22 21:21:00,473 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 2378 treesize of output 2188 [2023-11-22 21:21:00,486 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 2179 treesize of output 1911 [2023-11-22 21:21:01,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:01,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 64 [2023-11-22 21:21:01,399 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:01,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:01,402 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:01,402 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 21:21:01,404 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 0 case distinctions, treesize of input 34 treesize of output 18 [2023-11-22 21:21:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 19 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 33 not checked. [2023-11-22 21:21:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253102210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 21:21:01,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 21:21:01,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 41 [2023-11-22 21:21:01,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975695644] [2023-11-22 21:21:01,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 21:21:01,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-22 21:21:01,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 21:21:01,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-22 21:21:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1366, Unknown=6, NotChecked=150, Total=1640 [2023-11-22 21:21:01,427 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand has 41 states, 41 states have (on average 4.7317073170731705) internal successors, (194), 41 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:21:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 21:21:20,642 INFO L93 Difference]: Finished difference Result 267 states and 324 transitions. [2023-11-22 21:21:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-22 21:21:20,643 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.7317073170731705) internal successors, (194), 41 states have internal predecessors, (194), 0 states have call successors, (0), 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 [2023-11-22 21:21:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 21:21:20,644 INFO L225 Difference]: With dead ends: 267 [2023-11-22 21:21:20,644 INFO L226 Difference]: Without dead ends: 265 [2023-11-22 21:21:20,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 129 SyntacticMatches, 8 SemanticMatches, 117 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3541 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=2844, Invalid=10730, Unknown=6, NotChecked=462, Total=14042 [2023-11-22 21:21:20,646 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 870 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 437 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-22 21:21:20,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1082 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1309 Invalid, 0 Unknown, 437 Unchecked, 3.2s Time] [2023-11-22 21:21:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-22 21:21:20,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 121. [2023-11-22 21:21:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 120 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:21:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2023-11-22 21:21:20,669 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 70 [2023-11-22 21:21:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 21:21:20,669 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2023-11-22 21:21:20,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.7317073170731705) internal successors, (194), 41 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-22 21:21:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2023-11-22 21:21:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 21:21:20,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 21:21:20,670 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2023-11-22 21:21:20,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-22 21:21:20,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 21:21:20,882 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 21:21:20,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 21:21:20,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1470384033, now seen corresponding path program 9 times [2023-11-22 21:21:20,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 21:21:20,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766777378] [2023-11-22 21:21:20,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 21:21:20,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 21:21:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 21:21:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 20 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:21:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 21:21:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766777378] [2023-11-22 21:21:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766777378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 21:21:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469460395] [2023-11-22 21:21:22,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 21:21:22,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 21:21:22,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 21:21:22,201 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) [2023-11-22 21:21:22,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 21:21:23,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-22 21:21:23,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 21:21:23,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 114 conjunts are in the unsatisfiable core [2023-11-22 21:21:23,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 21:21:23,303 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 [2023-11-22 21:21:23,306 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 [2023-11-22 21:21:23,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-22 21:21:23,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:21:23,366 INFO L349 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-11-22 21:21:23,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 29 [2023-11-22 21:21:23,372 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 21 treesize of output 23 [2023-11-22 21:21:23,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:21:23,381 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 20 treesize of output 15 [2023-11-22 21:21:23,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:21:23,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,464 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 0 case distinctions, treesize of input 36 treesize of output 41 [2023-11-22 21:21:23,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:21:23,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,478 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2023-11-22 21:21:23,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2023-11-22 21:21:23,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,493 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2023-11-22 21:21:23,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2023-11-22 21:21:23,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-22 21:21:23,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:21:23,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,629 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 0 case distinctions, treesize of input 55 treesize of output 63 [2023-11-22 21:21:23,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:21:23,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,649 INFO L349 Elim1Store]: treesize reduction 64, result has 14.7 percent of original size [2023-11-22 21:21:23,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 136 treesize of output 85 [2023-11-22 21:21:23,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,665 INFO L349 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2023-11-22 21:21:23,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2023-11-22 21:21:23,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-22 21:21:23,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,847 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 0 case distinctions, treesize of input 78 treesize of output 89 [2023-11-22 21:21:23,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2023-11-22 21:21:23,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,875 INFO L349 Elim1Store]: treesize reduction 108, result has 12.9 percent of original size [2023-11-22 21:21:23,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 224 treesize of output 119 [2023-11-22 21:21:23,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 21:21:23,889 INFO L349 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2023-11-22 21:21:23,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 36 [2023-11-22 21:21:23,906 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 8 treesize of output 1 [2023-11-22 21:21:25,530 INFO L349 Elim1Store]: treesize reduction 56, result has 30.9 percent of original size [2023-11-22 21:21:25,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 208 treesize of output 92 [2023-11-22 21:21:25,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2023-11-22 21:21:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 20 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 21:21:25,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 21:21:26,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:26,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 621 treesize of output 537 [2023-11-22 21:21:26,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:26,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 531 treesize of output 447 [2023-11-22 21:21:26,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:26,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1323 treesize of output 1195 [2023-11-22 21:21:26,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:26,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1188 treesize of output 1060 [2023-11-22 21:21:26,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:26,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1053 treesize of output 1022 [2023-11-22 21:21:26,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:26,653 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 1949 treesize of output 2563 [2023-11-22 21:21:26,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:26,670 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 1329 treesize of output 1332 [2023-11-22 21:21:26,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 21:21:26,688 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 1173 treesize of output 1176 Killed by 15