./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label59.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label59.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e95469d39d3368d14177394b02d3829b8d37dd10304149f6e91cf64fc01c6cbc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:13:21,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:13:21,590 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:13:21,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:13:21,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:13:21,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:13:21,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:13:21,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:13:21,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:13:21,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:13:21,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:13:21,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:13:21,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:13:21,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:13:21,621 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:13:21,621 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:13:21,621 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:13:21,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:13:21,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:13:21,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:13:21,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:13:21,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:13:21,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:13:21,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:13:21,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:13:21,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:13:21,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:13:21,626 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:13:21,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:13:21,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:13:21,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:13:21,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:13:21,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:13:21,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:13:21,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:13:21,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:13:21,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:13:21,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:13:21,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:13:21,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:13:21,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:13:21,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:13:21,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e95469d39d3368d14177394b02d3829b8d37dd10304149f6e91cf64fc01c6cbc [2024-10-12 16:13:21,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:13:21,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:13:21,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:13:21,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:13:21,842 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:13:21,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label59.c [2024-10-12 16:13:23,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:13:23,390 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:13:23,391 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label59.c [2024-10-12 16:13:23,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec0bd9c0/31c12ae6ae544718af81dde51d901c98/FLAGd6b7d4ac8 [2024-10-12 16:13:23,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec0bd9c0/31c12ae6ae544718af81dde51d901c98 [2024-10-12 16:13:23,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:13:23,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:13:23,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:13:23,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:13:23,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:13:23,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:13:23" (1/1) ... [2024-10-12 16:13:23,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa24c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:23, skipping insertion in model container [2024-10-12 16:13:23,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:13:23" (1/1) ... [2024-10-12 16:13:23,680 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:13:23,898 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label59.c[6607,6620] [2024-10-12 16:13:24,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:13:24,486 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:13:24,505 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label59.c[6607,6620] [2024-10-12 16:13:24,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:13:24,855 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:13:24,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24 WrapperNode [2024-10-12 16:13:24,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:13:24,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:13:24,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:13:24,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:13:24,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:24,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,245 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-12 16:13:25,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:13:25,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:13:25,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:13:25,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:13:25,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,318 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,530 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:13:25,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:13:25,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:13:25,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:13:25,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:13:25,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (1/1) ... [2024-10-12 16:13:25,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:13:25,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:13:25,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:13:25,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:13:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:13:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:13:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:13:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:13:26,049 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:13:26,050 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:13:30,334 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-12 16:13:30,335 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:13:30,386 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:13:30,387 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:13:30,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:13:30 BoogieIcfgContainer [2024-10-12 16:13:30,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:13:30,388 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:13:30,388 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:13:30,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:13:30,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:13:23" (1/3) ... [2024-10-12 16:13:30,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeecbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:13:30, skipping insertion in model container [2024-10-12 16:13:30,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:13:24" (2/3) ... [2024-10-12 16:13:30,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aeecbb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:13:30, skipping insertion in model container [2024-10-12 16:13:30,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:13:30" (3/3) ... [2024-10-12 16:13:30,393 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2024-10-12 16:13:30,404 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:13:30,404 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:13:30,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:13:30,477 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@779350e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:13:30,477 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:13:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-12 16:13:30,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:30,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:30,488 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:30,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1485470434, now seen corresponding path program 1 times [2024-10-12 16:13:30,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:30,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265798900] [2024-10-12 16:13:30,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:30,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:30,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:30,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265798900] [2024-10-12 16:13:30,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265798900] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:30,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:30,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:13:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241652744] [2024-10-12 16:13:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:30,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:13:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:13:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:13:30,683 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:30,770 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-12 16:13:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:13:30,772 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-12 16:13:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:30,789 INFO L225 Difference]: With dead ends: 2071 [2024-10-12 16:13:30,790 INFO L226 Difference]: Without dead ends: 1034 [2024-10-12 16:13:30,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:13:30,799 INFO L432 NwaCegarLoop]: 1876 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, 1876 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 [2024-10-12 16:13:30,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:13:30,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-12 16:13:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-12 16:13:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-12 16:13:30,874 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 45 [2024-10-12 16:13:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:30,874 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-12 16:13:30,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-12 16:13:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-12 16:13:30,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:30,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:30,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:13:30,876 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:30,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:30,876 INFO L85 PathProgramCache]: Analyzing trace with hash -453512909, now seen corresponding path program 1 times [2024-10-12 16:13:30,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:30,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642912025] [2024-10-12 16:13:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:30,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642912025] [2024-10-12 16:13:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642912025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:31,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:31,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:13:31,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083274782] [2024-10-12 16:13:31,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:31,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:31,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:31,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:31,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:31,018 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:34,694 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2024-10-12 16:13:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-10-12 16:13:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:34,703 INFO L225 Difference]: With dead ends: 3015 [2024-10-12 16:13:34,703 INFO L226 Difference]: Without dead ends: 1982 [2024-10-12 16:13:34,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:34,705 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 1009 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:34,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-12 16:13:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2024-10-12 16:13:34,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2024-10-12 16:13:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2024-10-12 16:13:34,745 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 45 [2024-10-12 16:13:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:34,746 INFO L471 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2024-10-12 16:13:34,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2024-10-12 16:13:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-12 16:13:34,749 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:34,749 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:34,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:13:34,752 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:34,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1617916151, now seen corresponding path program 1 times [2024-10-12 16:13:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:34,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739293587] [2024-10-12 16:13:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:34,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:34,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739293587] [2024-10-12 16:13:34,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739293587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:34,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:34,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:13:34,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546135628] [2024-10-12 16:13:34,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:34,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:34,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:34,917 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:37,537 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2024-10-12 16:13:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:37,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-10-12 16:13:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:37,546 INFO L225 Difference]: With dead ends: 5455 [2024-10-12 16:13:37,546 INFO L226 Difference]: Without dead ends: 3527 [2024-10-12 16:13:37,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:37,549 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:37,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:13:37,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2024-10-12 16:13:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2024-10-12 16:13:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2024-10-12 16:13:37,592 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 110 [2024-10-12 16:13:37,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:37,593 INFO L471 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2024-10-12 16:13:37,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:37,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2024-10-12 16:13:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-12 16:13:37,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:37,597 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:37,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:13:37,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:37,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2110228838, now seen corresponding path program 1 times [2024-10-12 16:13:37,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:37,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851158514] [2024-10-12 16:13:37,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851158514] [2024-10-12 16:13:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851158514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:37,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:37,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:13:37,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905088662] [2024-10-12 16:13:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:37,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:37,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:37,734 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:40,123 INFO L93 Difference]: Finished difference Result 10233 states and 16097 transitions. [2024-10-12 16:13:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:40,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-10-12 16:13:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:40,141 INFO L225 Difference]: With dead ends: 10233 [2024-10-12 16:13:40,141 INFO L226 Difference]: Without dead ends: 6709 [2024-10-12 16:13:40,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:40,148 INFO L432 NwaCegarLoop]: 716 mSDtfsCounter, 973 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:40,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 850 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:13:40,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6709 states. [2024-10-12 16:13:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6709 to 6699. [2024-10-12 16:13:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2024-10-12 16:13:40,284 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 116 [2024-10-12 16:13:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:40,286 INFO L471 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2024-10-12 16:13:40,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2024-10-12 16:13:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-12 16:13:40,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:40,290 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:40,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:13:40,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:40,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash -642343825, now seen corresponding path program 1 times [2024-10-12 16:13:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:40,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190757030] [2024-10-12 16:13:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:40,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:40,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190757030] [2024-10-12 16:13:40,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190757030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:40,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:40,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:13:40,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182790838] [2024-10-12 16:13:40,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:40,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:40,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:40,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:40,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:40,447 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:43,160 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2024-10-12 16:13:43,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:43,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2024-10-12 16:13:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:43,185 INFO L225 Difference]: With dead ends: 17442 [2024-10-12 16:13:43,185 INFO L226 Difference]: Without dead ends: 10744 [2024-10-12 16:13:43,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:43,193 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:43,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:13:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2024-10-12 16:13:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2024-10-12 16:13:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:43,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2024-10-12 16:13:43,318 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 146 [2024-10-12 16:13:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:43,319 INFO L471 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2024-10-12 16:13:43,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:43,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2024-10-12 16:13:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-10-12 16:13:43,323 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:43,323 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:43,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:13:43,323 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:43,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2002303798, now seen corresponding path program 1 times [2024-10-12 16:13:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:43,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859004922] [2024-10-12 16:13:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:43,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:43,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859004922] [2024-10-12 16:13:43,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859004922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:43,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:43,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:13:43,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350423526] [2024-10-12 16:13:43,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:43,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:43,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:43,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:43,592 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:45,642 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2024-10-12 16:13:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:45,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2024-10-12 16:13:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:45,665 INFO L225 Difference]: With dead ends: 20548 [2024-10-12 16:13:45,666 INFO L226 Difference]: Without dead ends: 10668 [2024-10-12 16:13:45,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:45,678 INFO L432 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:45,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-12 16:13:45,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2024-10-12 16:13:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2024-10-12 16:13:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2024-10-12 16:13:45,798 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 156 [2024-10-12 16:13:45,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:45,799 INFO L471 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2024-10-12 16:13:45,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:45,800 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2024-10-12 16:13:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-12 16:13:45,801 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:45,801 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:45,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:13:45,801 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:45,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash -807328180, now seen corresponding path program 1 times [2024-10-12 16:13:45,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:45,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028358131] [2024-10-12 16:13:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:45,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:45,962 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028358131] [2024-10-12 16:13:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028358131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:45,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:45,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:13:45,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945613569] [2024-10-12 16:13:45,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:45,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:45,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:45,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:45,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:45,965 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:48,671 INFO L93 Difference]: Finished difference Result 29990 states and 41154 transitions. [2024-10-12 16:13:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2024-10-12 16:13:48,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:48,700 INFO L225 Difference]: With dead ends: 29990 [2024-10-12 16:13:48,701 INFO L226 Difference]: Without dead ends: 20110 [2024-10-12 16:13:48,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:48,714 INFO L432 NwaCegarLoop]: 1847 mSDtfsCounter, 891 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:48,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1985 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-12 16:13:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20110 states. [2024-10-12 16:13:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20110 to 19313. [2024-10-12 16:13:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19313 states, 19312 states have (on average 1.2808616404308202) internal successors, (24736), 19312 states have internal predecessors, (24736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 24736 transitions. [2024-10-12 16:13:48,896 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 24736 transitions. Word has length 170 [2024-10-12 16:13:48,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:48,897 INFO L471 AbstractCegarLoop]: Abstraction has 19313 states and 24736 transitions. [2024-10-12 16:13:48,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 24736 transitions. [2024-10-12 16:13:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-10-12 16:13:48,900 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:48,900 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:48,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:13:48,901 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:48,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2047428504, now seen corresponding path program 1 times [2024-10-12 16:13:48,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:48,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016548298] [2024-10-12 16:13:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-12 16:13:49,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:49,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016548298] [2024-10-12 16:13:49,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016548298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:49,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:49,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:13:49,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887590269] [2024-10-12 16:13:49,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:49,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:49,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:49,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:49,170 INFO L87 Difference]: Start difference. First operand 19313 states and 24736 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:51,737 INFO L93 Difference]: Finished difference Result 44943 states and 56955 transitions. [2024-10-12 16:13:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 257 [2024-10-12 16:13:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:51,774 INFO L225 Difference]: With dead ends: 44943 [2024-10-12 16:13:51,774 INFO L226 Difference]: Without dead ends: 25631 [2024-10-12 16:13:51,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:51,793 INFO L432 NwaCegarLoop]: 1011 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:51,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1190 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:13:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25631 states. [2024-10-12 16:13:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25631 to 25621. [2024-10-12 16:13:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25621 states, 25620 states have (on average 1.2326307572209212) internal successors, (31580), 25620 states have internal predecessors, (31580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 31580 transitions. [2024-10-12 16:13:52,022 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 31580 transitions. Word has length 257 [2024-10-12 16:13:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:52,023 INFO L471 AbstractCegarLoop]: Abstraction has 25621 states and 31580 transitions. [2024-10-12 16:13:52,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 31580 transitions. [2024-10-12 16:13:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-10-12 16:13:52,025 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:52,026 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:52,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:13:52,026 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:52,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1992336918, now seen corresponding path program 1 times [2024-10-12 16:13:52,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:52,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262299561] [2024-10-12 16:13:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262299561] [2024-10-12 16:13:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262299561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:52,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:13:52,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:13:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725900769] [2024-10-12 16:13:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:52,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:52,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:52,160 INFO L87 Difference]: Start difference. First operand 25621 states and 31580 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:54,790 INFO L93 Difference]: Finished difference Result 72508 states and 89969 transitions. [2024-10-12 16:13:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2024-10-12 16:13:54,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:54,838 INFO L225 Difference]: With dead ends: 72508 [2024-10-12 16:13:54,838 INFO L226 Difference]: Without dead ends: 47675 [2024-10-12 16:13:54,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:13:54,860 INFO L432 NwaCegarLoop]: 779 mSDtfsCounter, 826 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:54,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 896 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:13:54,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47675 states. [2024-10-12 16:13:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47675 to 46090. [2024-10-12 16:13:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46090 states, 46089 states have (on average 1.185141790882857) internal successors, (54622), 46089 states have internal predecessors, (54622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46090 states to 46090 states and 54622 transitions. [2024-10-12 16:13:55,243 INFO L78 Accepts]: Start accepts. Automaton has 46090 states and 54622 transitions. Word has length 272 [2024-10-12 16:13:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:55,243 INFO L471 AbstractCegarLoop]: Abstraction has 46090 states and 54622 transitions. [2024-10-12 16:13:55,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 46090 states and 54622 transitions. [2024-10-12 16:13:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-10-12 16:13:55,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:55,246 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:55,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:13:55,247 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:55,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:55,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1596347728, now seen corresponding path program 1 times [2024-10-12 16:13:55,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:55,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469398973] [2024-10-12 16:13:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:55,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 90 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:13:56,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:13:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469398973] [2024-10-12 16:13:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469398973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:13:56,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017498898] [2024-10-12 16:13:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:56,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:13:56,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:13:56,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:13:56,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:13:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:13:56,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:13:56,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:13:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-12 16:13:56,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:13:56,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017498898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:13:56,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:13:56,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:13:56,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79011239] [2024-10-12 16:13:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:13:56,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:13:56,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:13:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:13:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:13:56,288 INFO L87 Difference]: Start difference. First operand 46090 states and 54622 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:13:58,803 INFO L93 Difference]: Finished difference Result 91390 states and 108450 transitions. [2024-10-12 16:13:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:13:58,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 286 [2024-10-12 16:13:58,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:13:58,853 INFO L225 Difference]: With dead ends: 91390 [2024-10-12 16:13:58,853 INFO L226 Difference]: Without dead ends: 46088 [2024-10-12 16:13:58,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:13:58,885 INFO L432 NwaCegarLoop]: 1357 mSDtfsCounter, 1160 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:13:58,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1438 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:13:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46088 states. [2024-10-12 16:13:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46088 to 46087. [2024-10-12 16:13:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46087 states, 46086 states have (on average 1.1506965238901186) internal successors, (53031), 46086 states have internal predecessors, (53031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46087 states to 46087 states and 53031 transitions. [2024-10-12 16:13:59,284 INFO L78 Accepts]: Start accepts. Automaton has 46087 states and 53031 transitions. Word has length 286 [2024-10-12 16:13:59,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:13:59,285 INFO L471 AbstractCegarLoop]: Abstraction has 46087 states and 53031 transitions. [2024-10-12 16:13:59,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:13:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 46087 states and 53031 transitions. [2024-10-12 16:13:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-10-12 16:13:59,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:13:59,294 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:13:59,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:13:59,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 16:13:59,495 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:13:59,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:13:59,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1940985484, now seen corresponding path program 1 times [2024-10-12 16:13:59,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:13:59,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903581292] [2024-10-12 16:13:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:13:59,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:13:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 216 proven. 113 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-12 16:14:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903581292] [2024-10-12 16:14:00,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903581292] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:14:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186033087] [2024-10-12 16:14:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:00,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:14:00,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:14:00,468 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:14:00,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:14:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:00,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:14:00,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:14:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-12 16:14:00,652 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:14:00,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186033087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:00,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:14:00,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-12 16:14:00,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784706365] [2024-10-12 16:14:00,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:00,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:14:00,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:00,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:14:00,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:14:00,654 INFO L87 Difference]: Start difference. First operand 46087 states and 53031 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:02,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:02,972 INFO L93 Difference]: Finished difference Result 91375 states and 105259 transitions. [2024-10-12 16:14:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:14:02,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 351 [2024-10-12 16:14:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:03,021 INFO L225 Difference]: With dead ends: 91375 [2024-10-12 16:14:03,021 INFO L226 Difference]: Without dead ends: 46076 [2024-10-12 16:14:03,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:14:03,050 INFO L432 NwaCegarLoop]: 684 mSDtfsCounter, 1074 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:03,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 815 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 16:14:03,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46076 states. [2024-10-12 16:14:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46076 to 46073. [2024-10-12 16:14:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46073 states, 46072 states have (on average 1.1090467094981769) internal successors, (51096), 46072 states have internal predecessors, (51096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46073 states to 46073 states and 51096 transitions. [2024-10-12 16:14:03,470 INFO L78 Accepts]: Start accepts. Automaton has 46073 states and 51096 transitions. Word has length 351 [2024-10-12 16:14:03,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:14:03,470 INFO L471 AbstractCegarLoop]: Abstraction has 46073 states and 51096 transitions. [2024-10-12 16:14:03,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:03,471 INFO L276 IsEmpty]: Start isEmpty. Operand 46073 states and 51096 transitions. [2024-10-12 16:14:03,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2024-10-12 16:14:03,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:14:03,475 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:14:03,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:14:03,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 16:14:03,680 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:14:03,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:14:03,680 INFO L85 PathProgramCache]: Analyzing trace with hash 912369226, now seen corresponding path program 1 times [2024-10-12 16:14:03,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:14:03,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136041858] [2024-10-12 16:14:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:03,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:14:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-12 16:14:03,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:03,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136041858] [2024-10-12 16:14:03,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136041858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:03,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:14:03,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:14:03,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634018186] [2024-10-12 16:14:03,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:03,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:14:03,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:14:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:14:03,865 INFO L87 Difference]: Start difference. First operand 46073 states and 51096 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:08,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:08,930 INFO L93 Difference]: Finished difference Result 122258 states and 136282 transitions. [2024-10-12 16:14:08,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:14:08,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 393 [2024-10-12 16:14:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:09,011 INFO L225 Difference]: With dead ends: 122258 [2024-10-12 16:14:09,011 INFO L226 Difference]: Without dead ends: 76973 [2024-10-12 16:14:09,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:14:09,041 INFO L432 NwaCegarLoop]: 651 mSDtfsCounter, 1700 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 6752 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 7754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 6752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:09,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 889 Invalid, 7754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 6752 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-10-12 16:14:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76973 states. [2024-10-12 16:14:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76973 to 57893. [2024-10-12 16:14:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57893 states, 57892 states have (on average 1.1003592897118772) internal successors, (63702), 57892 states have internal predecessors, (63702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57893 states to 57893 states and 63702 transitions. [2024-10-12 16:14:09,850 INFO L78 Accepts]: Start accepts. Automaton has 57893 states and 63702 transitions. Word has length 393 [2024-10-12 16:14:09,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:14:09,850 INFO L471 AbstractCegarLoop]: Abstraction has 57893 states and 63702 transitions. [2024-10-12 16:14:09,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 57893 states and 63702 transitions. [2024-10-12 16:14:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-10-12 16:14:09,857 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:14:09,857 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:14:09,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:14:09,857 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:14:09,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:14:09,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1852156812, now seen corresponding path program 1 times [2024-10-12 16:14:09,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:14:09,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354012955] [2024-10-12 16:14:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:09,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:14:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-12 16:14:10,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:10,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354012955] [2024-10-12 16:14:10,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354012955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:10,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:14:10,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:14:10,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666941276] [2024-10-12 16:14:10,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:10,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:14:10,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:10,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:14:10,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:14:10,255 INFO L87 Difference]: Start difference. First operand 57893 states and 63702 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:13,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:13,041 INFO L93 Difference]: Finished difference Result 139406 states and 154439 transitions. [2024-10-12 16:14:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:14:13,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 406 [2024-10-12 16:14:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:13,124 INFO L225 Difference]: With dead ends: 139406 [2024-10-12 16:14:13,125 INFO L226 Difference]: Without dead ends: 82301 [2024-10-12 16:14:13,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:14:13,158 INFO L432 NwaCegarLoop]: 749 mSDtfsCounter, 830 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:13,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 831 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:14:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82301 states. [2024-10-12 16:14:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82301 to 80709. [2024-10-12 16:14:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80709 states, 80708 states have (on average 1.1005972146503444) internal successors, (88827), 80708 states have internal predecessors, (88827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80709 states to 80709 states and 88827 transitions. [2024-10-12 16:14:13,872 INFO L78 Accepts]: Start accepts. Automaton has 80709 states and 88827 transitions. Word has length 406 [2024-10-12 16:14:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:14:13,872 INFO L471 AbstractCegarLoop]: Abstraction has 80709 states and 88827 transitions. [2024-10-12 16:14:13,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 80709 states and 88827 transitions. [2024-10-12 16:14:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-10-12 16:14:13,877 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:14:13,878 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:14:13,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:14:13,878 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:14:13,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:14:13,878 INFO L85 PathProgramCache]: Analyzing trace with hash 735073468, now seen corresponding path program 1 times [2024-10-12 16:14:13,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:14:13,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138884788] [2024-10-12 16:14:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:13,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:14:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-12 16:14:14,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:14,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138884788] [2024-10-12 16:14:14,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138884788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:14,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:14:14,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:14:14,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852370003] [2024-10-12 16:14:14,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:14,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:14:14,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:14,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:14:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:14:14,584 INFO L87 Difference]: Start difference. First operand 80709 states and 88827 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:17,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:17,099 INFO L93 Difference]: Finished difference Result 182695 states and 200597 transitions. [2024-10-12 16:14:17,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:14:17,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 426 [2024-10-12 16:14:17,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:17,227 INFO L225 Difference]: With dead ends: 182695 [2024-10-12 16:14:17,228 INFO L226 Difference]: Without dead ends: 102774 [2024-10-12 16:14:17,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:14:17,275 INFO L432 NwaCegarLoop]: 972 mSDtfsCounter, 803 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:17,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1112 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 16:14:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102774 states. [2024-10-12 16:14:18,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102774 to 98814. [2024-10-12 16:14:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98814 states, 98813 states have (on average 1.0907269286429924) internal successors, (107778), 98813 states have internal predecessors, (107778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98814 states to 98814 states and 107778 transitions. [2024-10-12 16:14:18,395 INFO L78 Accepts]: Start accepts. Automaton has 98814 states and 107778 transitions. Word has length 426 [2024-10-12 16:14:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:14:18,395 INFO L471 AbstractCegarLoop]: Abstraction has 98814 states and 107778 transitions. [2024-10-12 16:14:18,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 98814 states and 107778 transitions. [2024-10-12 16:14:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-10-12 16:14:18,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:14:18,401 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:14:18,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:14:18,401 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:14:18,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:14:18,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2092992386, now seen corresponding path program 1 times [2024-10-12 16:14:18,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:14:18,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784434095] [2024-10-12 16:14:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:14:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 385 proven. 113 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-12 16:14:19,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784434095] [2024-10-12 16:14:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784434095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:14:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878250342] [2024-10-12 16:14:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:19,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:14:19,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:14:19,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:14:19,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:14:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:19,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:14:19,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:14:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-10-12 16:14:19,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:14:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878250342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:19,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:14:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-12 16:14:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034806351] [2024-10-12 16:14:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:19,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:14:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:14:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:14:19,843 INFO L87 Difference]: Start difference. First operand 98814 states and 107778 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:22,462 INFO L93 Difference]: Finished difference Result 198418 states and 216355 transitions. [2024-10-12 16:14:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:14:22,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 436 [2024-10-12 16:14:22,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:22,580 INFO L225 Difference]: With dead ends: 198418 [2024-10-12 16:14:22,580 INFO L226 Difference]: Without dead ends: 100392 [2024-10-12 16:14:22,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:14:22,641 INFO L432 NwaCegarLoop]: 1383 mSDtfsCounter, 993 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:22,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1468 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:14:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100392 states. [2024-10-12 16:14:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100392 to 98806. [2024-10-12 16:14:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98806 states, 98805 states have (on average 1.0671119882597035) internal successors, (105436), 98805 states have internal predecessors, (105436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98806 states to 98806 states and 105436 transitions. [2024-10-12 16:14:23,756 INFO L78 Accepts]: Start accepts. Automaton has 98806 states and 105436 transitions. Word has length 436 [2024-10-12 16:14:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:14:23,756 INFO L471 AbstractCegarLoop]: Abstraction has 98806 states and 105436 transitions. [2024-10-12 16:14:23,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 98806 states and 105436 transitions. [2024-10-12 16:14:23,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-10-12 16:14:23,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:14:23,764 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:14:23,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 16:14:23,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:14:23,965 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:14:23,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:14:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash 816331524, now seen corresponding path program 1 times [2024-10-12 16:14:23,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:14:23,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690761861] [2024-10-12 16:14:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:23,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:14:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-10-12 16:14:24,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:24,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690761861] [2024-10-12 16:14:24,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690761861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:24,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:14:24,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:14:24,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669809034] [2024-10-12 16:14:24,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:24,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:14:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:14:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:14:24,492 INFO L87 Difference]: Start difference. First operand 98806 states and 105436 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:27,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:27,922 INFO L93 Difference]: Finished difference Result 241039 states and 257883 transitions. [2024-10-12 16:14:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:14:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 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 476 [2024-10-12 16:14:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:28,071 INFO L225 Difference]: With dead ends: 241039 [2024-10-12 16:14:28,071 INFO L226 Difference]: Without dead ends: 143021 [2024-10-12 16:14:28,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:14:28,105 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 844 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:28,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 750 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-12 16:14:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143021 states. [2024-10-12 16:14:29,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143021 to 118492. [2024-10-12 16:14:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118492 states, 118491 states have (on average 1.0664691833135007) internal successors, (126367), 118491 states have internal predecessors, (126367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118492 states to 118492 states and 126367 transitions. [2024-10-12 16:14:29,557 INFO L78 Accepts]: Start accepts. Automaton has 118492 states and 126367 transitions. Word has length 476 [2024-10-12 16:14:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:14:29,558 INFO L471 AbstractCegarLoop]: Abstraction has 118492 states and 126367 transitions. [2024-10-12 16:14:29,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 118492 states and 126367 transitions. [2024-10-12 16:14:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2024-10-12 16:14:29,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:14:29,570 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:14:29,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:14:29,570 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:14:29,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:14:29,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1494883181, now seen corresponding path program 1 times [2024-10-12 16:14:29,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:14:29,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871767731] [2024-10-12 16:14:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:29,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:14:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 543 proven. 110 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-10-12 16:14:30,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871767731] [2024-10-12 16:14:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871767731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:14:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402827829] [2024-10-12 16:14:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:30,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:14:30,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:14:30,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:14:30,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 16:14:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:30,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:14:30,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:14:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-12 16:14:30,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:14:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402827829] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:30,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:14:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:14:30,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331672067] [2024-10-12 16:14:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:30,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:14:30,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:14:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:14:30,996 INFO L87 Difference]: Start difference. First operand 118492 states and 126367 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:33,680 INFO L93 Difference]: Finished difference Result 230660 states and 246977 transitions. [2024-10-12 16:14:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:14:33,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 517 [2024-10-12 16:14:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:33,817 INFO L225 Difference]: With dead ends: 230660 [2024-10-12 16:14:33,817 INFO L226 Difference]: Without dead ends: 128702 [2024-10-12 16:14:33,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:14:33,844 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 1200 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:33,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 388 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:14:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128702 states. [2024-10-12 16:14:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128702 to 128702. [2024-10-12 16:14:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128702 states, 128701 states have (on average 1.0603336415412468) internal successors, (136466), 128701 states have internal predecessors, (136466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128702 states to 128702 states and 136466 transitions. [2024-10-12 16:14:35,500 INFO L78 Accepts]: Start accepts. Automaton has 128702 states and 136466 transitions. Word has length 517 [2024-10-12 16:14:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:14:35,500 INFO L471 AbstractCegarLoop]: Abstraction has 128702 states and 136466 transitions. [2024-10-12 16:14:35,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 128702 states and 136466 transitions. [2024-10-12 16:14:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2024-10-12 16:14:35,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:14:35,510 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:14:35,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 16:14:35,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 16:14:35,711 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:14:35,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:14:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2122874086, now seen corresponding path program 1 times [2024-10-12 16:14:35,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:14:35,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154655688] [2024-10-12 16:14:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:14:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 328 proven. 110 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-12 16:14:36,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154655688] [2024-10-12 16:14:36,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154655688] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:14:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169399513] [2024-10-12 16:14:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:36,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:14:36,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:14:36,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:14:36,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 16:14:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:36,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:14:36,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:14:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-10-12 16:14:36,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:14:36,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169399513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:36,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:14:36,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-12 16:14:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012390558] [2024-10-12 16:14:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:36,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:14:36,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:14:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:14:36,960 INFO L87 Difference]: Start difference. First operand 128702 states and 136466 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:40,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:40,060 INFO L93 Difference]: Finished difference Result 280219 states and 298585 transitions. [2024-10-12 16:14:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:14:40,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 541 [2024-10-12 16:14:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:40,254 INFO L225 Difference]: With dead ends: 280219 [2024-10-12 16:14:40,254 INFO L226 Difference]: Without dead ends: 168051 [2024-10-12 16:14:40,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 16:14:40,327 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 846 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:40,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1689 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 16:14:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168051 states. [2024-10-12 16:14:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168051 to 168051. [2024-10-12 16:14:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168051 states, 168050 states have (on average 1.0585123475156204) internal successors, (177883), 168050 states have internal predecessors, (177883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168051 states to 168051 states and 177883 transitions. [2024-10-12 16:14:42,133 INFO L78 Accepts]: Start accepts. Automaton has 168051 states and 177883 transitions. Word has length 541 [2024-10-12 16:14:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:14:42,134 INFO L471 AbstractCegarLoop]: Abstraction has 168051 states and 177883 transitions. [2024-10-12 16:14:42,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 168051 states and 177883 transitions. [2024-10-12 16:14:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-10-12 16:14:42,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:14:42,145 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:14:42,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 16:14:42,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 16:14:42,346 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:14:42,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:14:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1241591679, now seen corresponding path program 1 times [2024-10-12 16:14:42,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:14:42,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778857262] [2024-10-12 16:14:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:14:42,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:14:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:14:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-10-12 16:14:42,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:14:42,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778857262] [2024-10-12 16:14:42,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778857262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:14:42,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:14:42,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:14:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962994924] [2024-10-12 16:14:42,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:14:42,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:14:42,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:14:42,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:14:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:14:42,953 INFO L87 Difference]: Start difference. First operand 168051 states and 177883 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:14:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:14:45,982 INFO L93 Difference]: Finished difference Result 366803 states and 389130 transitions. [2024-10-12 16:14:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:14:45,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 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 547 [2024-10-12 16:14:45,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:14:46,212 INFO L225 Difference]: With dead ends: 366803 [2024-10-12 16:14:46,212 INFO L226 Difference]: Without dead ends: 199540 [2024-10-12 16:14:46,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:14:46,293 INFO L432 NwaCegarLoop]: 1733 mSDtfsCounter, 747 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 2929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:14:46,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1867 Invalid, 2929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:14:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199540 states.