./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 64bit --witnessprinter.graph.data.programhash 7e5038cf4746b0d33da8db40d97242789791fda4fe0e15050faace48f6985f4f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 06:51:01,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 06:51:01,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-11 06:51:01,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 06:51:01,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 06:51:01,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 06:51:01,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 06:51:01,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 06:51:01,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 06:51:01,301 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 06:51:01,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 06:51:01,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 06:51:01,303 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 06:51:01,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 06:51:01,306 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 06:51:01,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 06:51:01,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 06:51:01,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 06:51:01,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 06:51:01,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 06:51:01,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 06:51:01,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 06:51:01,313 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 06:51:01,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 06:51:01,313 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 06:51:01,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 06:51:01,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 06:51:01,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 06:51:01,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 06:51:01,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:51:01,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 06:51:01,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 06:51:01,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 06:51:01,320 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 06:51:01,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 06:51:01,321 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 06:51:01,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 06:51:01,321 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 06:51:01,322 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 06:51:01,322 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5038cf4746b0d33da8db40d97242789791fda4fe0e15050faace48f6985f4f [2024-10-11 06:51:01,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 06:51:01,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 06:51:01,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 06:51:01,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 06:51:01,623 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 06:51:01,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2024-10-11 06:51:03,104 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 06:51:03,279 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 06:51:03,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2024-10-11 06:51:03,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dcfd4ec19/24d463a77d914516a3fb56a38511ad3a/FLAG14613ec2f [2024-10-11 06:51:03,680 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dcfd4ec19/24d463a77d914516a3fb56a38511ad3a [2024-10-11 06:51:03,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 06:51:03,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 06:51:03,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 06:51:03,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 06:51:03,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 06:51:03,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464cf00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:03, skipping insertion in model container [2024-10-11 06:51:03,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:51:03" (1/1) ... [2024-10-11 06:51:03,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 06:51:04,099 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/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1249,1262] [2024-10-11 06:51:04,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:51:04,461 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 06:51:04,489 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/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1249,1262] [2024-10-11 06:51:04,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:51:04,702 INFO L204 MainTranslator]: Completed translation [2024-10-11 06:51:04,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04 WrapperNode [2024-10-11 06:51:04,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 06:51:04,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 06:51:04,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 06:51:04,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 06:51:04,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:04,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:04,981 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1013 [2024-10-11 06:51:04,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 06:51:04,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 06:51:04,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 06:51:04,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 06:51:05,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,088 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]. [2024-10-11 06:51:05,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 06:51:05,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 06:51:05,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 06:51:05,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 06:51:05,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (1/1) ... [2024-10-11 06:51:05,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:51:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:05,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 06:51:05,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 06:51:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 06:51:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 06:51:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 06:51:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 06:51:05,394 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 06:51:05,397 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 06:51:06,775 INFO L? ?]: Removed 647 outVars from TransFormulas that were not future-live. [2024-10-11 06:51:06,776 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 06:51:06,809 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 06:51:06,809 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 06:51:06,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:51:06 BoogieIcfgContainer [2024-10-11 06:51:06,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 06:51:06,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 06:51:06,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 06:51:06,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 06:51:06,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:51:03" (1/3) ... [2024-10-11 06:51:06,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc02e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:51:06, skipping insertion in model container [2024-10-11 06:51:06,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:51:04" (2/3) ... [2024-10-11 06:51:06,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc02e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:51:06, skipping insertion in model container [2024-10-11 06:51:06,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:51:06" (3/3) ... [2024-10-11 06:51:06,818 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop_v.c [2024-10-11 06:51:06,831 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 06:51:06,832 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 06:51:06,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 06:51:06,895 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;@69b613c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 06:51:06,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 06:51:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 293 states have (on average 1.5017064846416381) internal successors, (440), 294 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 06:51:06,907 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:06,908 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] [2024-10-11 06:51:06,908 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:06,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash -711317960, now seen corresponding path program 1 times [2024-10-11 06:51:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224510639] [2024-10-11 06:51:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:07,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224510639] [2024-10-11 06:51:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224510639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:07,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:07,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864211933] [2024-10-11 06:51:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:07,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:51:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:07,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:51:07,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:51:07,336 INFO L87 Difference]: Start difference. First operand has 295 states, 293 states have (on average 1.5017064846416381) internal successors, (440), 294 states have internal predecessors, (440), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:07,399 INFO L93 Difference]: Finished difference Result 554 states and 828 transitions. [2024-10-11 06:51:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:51:07,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-10-11 06:51:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:07,412 INFO L225 Difference]: With dead ends: 554 [2024-10-11 06:51:07,412 INFO L226 Difference]: Without dead ends: 296 [2024-10-11 06:51:07,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:51:07,418 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 0 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:07,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1300 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-10-11 06:51:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-10-11 06:51:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.4915254237288136) internal successors, (440), 295 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 440 transitions. [2024-10-11 06:51:07,511 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 440 transitions. Word has length 26 [2024-10-11 06:51:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:07,511 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 440 transitions. [2024-10-11 06:51:07,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 440 transitions. [2024-10-11 06:51:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 06:51:07,513 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:07,513 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] [2024-10-11 06:51:07,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 06:51:07,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:07,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash -574324984, now seen corresponding path program 1 times [2024-10-11 06:51:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455986284] [2024-10-11 06:51:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:07,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455986284] [2024-10-11 06:51:07,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455986284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:07,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:07,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:07,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136204059] [2024-10-11 06:51:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:07,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:51:07,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:51:07,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:51:07,646 INFO L87 Difference]: Start difference. First operand 296 states and 440 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:07,693 INFO L93 Difference]: Finished difference Result 557 states and 828 transitions. [2024-10-11 06:51:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:51:07,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-11 06:51:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:07,697 INFO L225 Difference]: With dead ends: 557 [2024-10-11 06:51:07,698 INFO L226 Difference]: Without dead ends: 298 [2024-10-11 06:51:07,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:51:07,703 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 0 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:07,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1297 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:07,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-10-11 06:51:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-10-11 06:51:07,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4882154882154883) internal successors, (442), 297 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 442 transitions. [2024-10-11 06:51:07,724 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 442 transitions. Word has length 27 [2024-10-11 06:51:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:07,725 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 442 transitions. [2024-10-11 06:51:07,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 442 transitions. [2024-10-11 06:51:07,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 06:51:07,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:07,726 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] [2024-10-11 06:51:07,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 06:51:07,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:07,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:07,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1722171119, now seen corresponding path program 1 times [2024-10-11 06:51:07,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842413566] [2024-10-11 06:51:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:07,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842413566] [2024-10-11 06:51:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842413566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:07,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:07,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125986999] [2024-10-11 06:51:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:07,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:07,936 INFO L87 Difference]: Start difference. First operand 298 states and 442 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:08,011 INFO L93 Difference]: Finished difference Result 794 states and 1179 transitions. [2024-10-11 06:51:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:08,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-11 06:51:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:08,013 INFO L225 Difference]: With dead ends: 794 [2024-10-11 06:51:08,014 INFO L226 Difference]: Without dead ends: 533 [2024-10-11 06:51:08,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:08,016 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 1117 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:08,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1270 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-10-11 06:51:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 300. [2024-10-11 06:51:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.4849498327759196) internal successors, (444), 299 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 444 transitions. [2024-10-11 06:51:08,037 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 444 transitions. Word has length 28 [2024-10-11 06:51:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:08,038 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 444 transitions. [2024-10-11 06:51:08,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 444 transitions. [2024-10-11 06:51:08,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-11 06:51:08,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:08,043 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:08,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 06:51:08,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:08,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash -377128560, now seen corresponding path program 1 times [2024-10-11 06:51:08,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:08,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671919090] [2024-10-11 06:51:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:09,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:09,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671919090] [2024-10-11 06:51:09,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671919090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:09,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:09,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:51:09,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996566941] [2024-10-11 06:51:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:09,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:51:09,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:51:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:51:09,106 INFO L87 Difference]: Start difference. First operand 300 states and 444 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:09,233 INFO L93 Difference]: Finished difference Result 777 states and 1153 transitions. [2024-10-11 06:51:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:51:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-10-11 06:51:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:09,237 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:09,238 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:09,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:51:09,240 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 1048 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:09,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1689 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 325. [2024-10-11 06:51:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.4753086419753085) internal successors, (478), 324 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 478 transitions. [2024-10-11 06:51:09,261 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 478 transitions. Word has length 157 [2024-10-11 06:51:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:09,262 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 478 transitions. [2024-10-11 06:51:09,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:09,262 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 478 transitions. [2024-10-11 06:51:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-10-11 06:51:09,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:09,271 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:09,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 06:51:09,271 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:09,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:09,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1346328412, now seen corresponding path program 1 times [2024-10-11 06:51:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:09,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682710108] [2024-10-11 06:51:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:10,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:10,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682710108] [2024-10-11 06:51:10,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682710108] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:10,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:10,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781947971] [2024-10-11 06:51:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:10,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:10,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:10,652 INFO L87 Difference]: Start difference. First operand 325 states and 478 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:10,766 INFO L93 Difference]: Finished difference Result 777 states and 1151 transitions. [2024-10-11 06:51:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:10,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-10-11 06:51:10,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:10,769 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:10,769 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:10,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:10,771 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 1026 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:10,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1258 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:10,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 354. [2024-10-11 06:51:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.4730878186968839) internal successors, (520), 353 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 520 transitions. [2024-10-11 06:51:10,779 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 520 transitions. Word has length 158 [2024-10-11 06:51:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:10,780 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 520 transitions. [2024-10-11 06:51:10,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 520 transitions. [2024-10-11 06:51:10,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-10-11 06:51:10,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:10,783 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:10,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 06:51:10,784 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:10,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash -733668633, now seen corresponding path program 1 times [2024-10-11 06:51:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:10,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182621838] [2024-10-11 06:51:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:10,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:12,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182621838] [2024-10-11 06:51:12,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182621838] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:12,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:12,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747150705] [2024-10-11 06:51:12,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:12,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:12,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:12,256 INFO L87 Difference]: Start difference. First operand 354 states and 520 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:12,340 INFO L93 Difference]: Finished difference Result 777 states and 1149 transitions. [2024-10-11 06:51:12,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:12,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2024-10-11 06:51:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:12,343 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:12,343 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:12,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:12,344 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 996 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:12,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:12,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 405. [2024-10-11 06:51:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 1.4727722772277227) internal successors, (595), 404 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:12,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 595 transitions. [2024-10-11 06:51:12,351 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 595 transitions. Word has length 160 [2024-10-11 06:51:12,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:12,351 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 595 transitions. [2024-10-11 06:51:12,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 595 transitions. [2024-10-11 06:51:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-10-11 06:51:12,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:12,353 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:12,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 06:51:12,353 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:12,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:12,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2041173522, now seen corresponding path program 1 times [2024-10-11 06:51:12,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:12,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268464470] [2024-10-11 06:51:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:12,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:13,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268464470] [2024-10-11 06:51:13,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268464470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:13,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:13,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662682303] [2024-10-11 06:51:13,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:13,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:13,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:13,339 INFO L87 Difference]: Start difference. First operand 405 states and 595 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:13,441 INFO L93 Difference]: Finished difference Result 777 states and 1148 transitions. [2024-10-11 06:51:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:13,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2024-10-11 06:51:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:13,443 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:13,443 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:13,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:13,444 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 979 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:13,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 433. [2024-10-11 06:51:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.4722222222222223) internal successors, (636), 432 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 636 transitions. [2024-10-11 06:51:13,454 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 636 transitions. Word has length 161 [2024-10-11 06:51:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:13,455 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 636 transitions. [2024-10-11 06:51:13,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 636 transitions. [2024-10-11 06:51:13,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-11 06:51:13,457 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:13,457 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:13,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 06:51:13,458 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:13,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:13,458 INFO L85 PathProgramCache]: Analyzing trace with hash -703692392, now seen corresponding path program 1 times [2024-10-11 06:51:13,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:13,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502336188] [2024-10-11 06:51:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:13,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:14,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:14,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502336188] [2024-10-11 06:51:14,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502336188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:14,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:14,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:14,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444094069] [2024-10-11 06:51:14,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:14,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:14,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:14,412 INFO L87 Difference]: Start difference. First operand 433 states and 636 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:14,507 INFO L93 Difference]: Finished difference Result 777 states and 1147 transitions. [2024-10-11 06:51:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:14,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2024-10-11 06:51:14,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:14,510 INFO L225 Difference]: With dead ends: 777 [2024-10-11 06:51:14,510 INFO L226 Difference]: Without dead ends: 516 [2024-10-11 06:51:14,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:14,511 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 948 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:14,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-11 06:51:14,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 489. [2024-10-11 06:51:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.473360655737705) internal successors, (719), 488 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 719 transitions. [2024-10-11 06:51:14,521 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 719 transitions. Word has length 162 [2024-10-11 06:51:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:14,521 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 719 transitions. [2024-10-11 06:51:14,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:14,522 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 719 transitions. [2024-10-11 06:51:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-10-11 06:51:14,523 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:14,524 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:14,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 06:51:14,524 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:14,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -421335372, now seen corresponding path program 1 times [2024-10-11 06:51:14,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:14,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971426095] [2024-10-11 06:51:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:14,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:15,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:15,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971426095] [2024-10-11 06:51:15,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971426095] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:15,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:15,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:15,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451891748] [2024-10-11 06:51:15,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:15,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:15,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:15,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:15,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:15,529 INFO L87 Difference]: Start difference. First operand 489 states and 719 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 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) [2024-10-11 06:51:15,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:15,672 INFO L93 Difference]: Finished difference Result 835 states and 1232 transitions. [2024-10-11 06:51:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:15,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 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 163 [2024-10-11 06:51:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:15,676 INFO L225 Difference]: With dead ends: 835 [2024-10-11 06:51:15,676 INFO L226 Difference]: Without dead ends: 524 [2024-10-11 06:51:15,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:15,681 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 997 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:15,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 1984 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-10-11 06:51:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 491. [2024-10-11 06:51:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.4714285714285715) internal successors, (721), 490 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 721 transitions. [2024-10-11 06:51:15,695 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 721 transitions. Word has length 163 [2024-10-11 06:51:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:15,696 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 721 transitions. [2024-10-11 06:51:15,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 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) [2024-10-11 06:51:15,696 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 721 transitions. [2024-10-11 06:51:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-11 06:51:15,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:15,698 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:15,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 06:51:15,698 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:15,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:15,699 INFO L85 PathProgramCache]: Analyzing trace with hash -678229837, now seen corresponding path program 1 times [2024-10-11 06:51:15,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:15,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385462528] [2024-10-11 06:51:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:16,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385462528] [2024-10-11 06:51:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385462528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:16,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:16,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177464298] [2024-10-11 06:51:16,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:16,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:16,835 INFO L87 Difference]: Start difference. First operand 491 states and 721 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:16,943 INFO L93 Difference]: Finished difference Result 787 states and 1160 transitions. [2024-10-11 06:51:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-10-11 06:51:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:16,946 INFO L225 Difference]: With dead ends: 787 [2024-10-11 06:51:16,946 INFO L226 Difference]: Without dead ends: 526 [2024-10-11 06:51:16,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:16,947 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 967 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:16,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 1870 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-11 06:51:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 494. [2024-10-11 06:51:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 1.4705882352941178) internal successors, (725), 493 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:16,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 725 transitions. [2024-10-11 06:51:16,956 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 725 transitions. Word has length 164 [2024-10-11 06:51:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:16,957 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 725 transitions. [2024-10-11 06:51:16,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 725 transitions. [2024-10-11 06:51:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-11 06:51:16,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:16,958 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:16,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 06:51:16,959 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:16,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:16,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1725972576, now seen corresponding path program 1 times [2024-10-11 06:51:16,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:16,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203091646] [2024-10-11 06:51:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:16,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:17,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203091646] [2024-10-11 06:51:17,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203091646] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:17,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:17,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:17,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400690257] [2024-10-11 06:51:17,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:17,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:17,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:17,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:17,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:17,823 INFO L87 Difference]: Start difference. First operand 494 states and 725 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:17,912 INFO L93 Difference]: Finished difference Result 810 states and 1192 transitions. [2024-10-11 06:51:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:17,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-10-11 06:51:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:17,914 INFO L225 Difference]: With dead ends: 810 [2024-10-11 06:51:17,914 INFO L226 Difference]: Without dead ends: 520 [2024-10-11 06:51:17,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:17,915 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 959 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:17,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 1257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-10-11 06:51:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 494. [2024-10-11 06:51:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 1.4685598377281948) internal successors, (724), 493 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 724 transitions. [2024-10-11 06:51:17,924 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 724 transitions. Word has length 165 [2024-10-11 06:51:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:17,924 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 724 transitions. [2024-10-11 06:51:17,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 724 transitions. [2024-10-11 06:51:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-11 06:51:17,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:17,926 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:17,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 06:51:17,926 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:17,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash 493339209, now seen corresponding path program 1 times [2024-10-11 06:51:17,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:17,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740327992] [2024-10-11 06:51:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:18,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740327992] [2024-10-11 06:51:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740327992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:18,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:18,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:18,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30312075] [2024-10-11 06:51:18,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:18,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:18,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:18,712 INFO L87 Difference]: Start difference. First operand 494 states and 724 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:18,836 INFO L93 Difference]: Finished difference Result 814 states and 1197 transitions. [2024-10-11 06:51:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:18,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2024-10-11 06:51:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:18,838 INFO L225 Difference]: With dead ends: 814 [2024-10-11 06:51:18,839 INFO L226 Difference]: Without dead ends: 528 [2024-10-11 06:51:18,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:18,840 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 978 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:18,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 2098 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:18,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-10-11 06:51:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 496. [2024-10-11 06:51:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.4666666666666666) internal successors, (726), 495 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 726 transitions. [2024-10-11 06:51:18,849 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 726 transitions. Word has length 166 [2024-10-11 06:51:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:18,849 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 726 transitions. [2024-10-11 06:51:18,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 726 transitions. [2024-10-11 06:51:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:51:18,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:18,851 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:18,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 06:51:18,851 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:18,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1366309657, now seen corresponding path program 1 times [2024-10-11 06:51:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:18,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353088430] [2024-10-11 06:51:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:18,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:19,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:19,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353088430] [2024-10-11 06:51:19,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353088430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:19,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:19,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:19,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109665078] [2024-10-11 06:51:19,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:19,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:19,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:19,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:19,524 INFO L87 Difference]: Start difference. First operand 496 states and 726 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:19,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:19,632 INFO L93 Difference]: Finished difference Result 816 states and 1199 transitions. [2024-10-11 06:51:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:19,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-10-11 06:51:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:19,637 INFO L225 Difference]: With dead ends: 816 [2024-10-11 06:51:19,638 INFO L226 Difference]: Without dead ends: 534 [2024-10-11 06:51:19,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:19,643 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 988 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:19,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1988 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:19,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-10-11 06:51:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 498. [2024-10-11 06:51:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.4647887323943662) internal successors, (728), 497 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 728 transitions. [2024-10-11 06:51:19,661 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 728 transitions. Word has length 167 [2024-10-11 06:51:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:19,662 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 728 transitions. [2024-10-11 06:51:19,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:19,662 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 728 transitions. [2024-10-11 06:51:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:51:19,663 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:19,663 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:19,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 06:51:19,664 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:19,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1467180925, now seen corresponding path program 1 times [2024-10-11 06:51:19,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:19,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929460960] [2024-10-11 06:51:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:19,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:20,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:20,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929460960] [2024-10-11 06:51:20,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929460960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:20,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:20,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:20,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295921958] [2024-10-11 06:51:20,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:20,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:20,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:20,356 INFO L87 Difference]: Start difference. First operand 498 states and 728 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:20,469 INFO L93 Difference]: Finished difference Result 797 states and 1171 transitions. [2024-10-11 06:51:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:20,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-10-11 06:51:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:20,471 INFO L225 Difference]: With dead ends: 797 [2024-10-11 06:51:20,471 INFO L226 Difference]: Without dead ends: 536 [2024-10-11 06:51:20,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:20,472 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 971 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:20,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2098 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:20,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-10-11 06:51:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 504. [2024-10-11 06:51:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.463220675944334) internal successors, (736), 503 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 736 transitions. [2024-10-11 06:51:20,480 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 736 transitions. Word has length 167 [2024-10-11 06:51:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:20,481 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 736 transitions. [2024-10-11 06:51:20,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 736 transitions. [2024-10-11 06:51:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-11 06:51:20,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:20,482 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:20,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 06:51:20,483 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:20,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash -42195937, now seen corresponding path program 1 times [2024-10-11 06:51:20,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:20,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621403204] [2024-10-11 06:51:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:20,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:21,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:21,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621403204] [2024-10-11 06:51:21,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621403204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:21,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:21,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:21,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560305801] [2024-10-11 06:51:21,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:21,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:21,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:21,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:21,239 INFO L87 Difference]: Start difference. First operand 504 states and 736 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:21,327 INFO L93 Difference]: Finished difference Result 790 states and 1160 transitions. [2024-10-11 06:51:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-10-11 06:51:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:21,329 INFO L225 Difference]: With dead ends: 790 [2024-10-11 06:51:21,330 INFO L226 Difference]: Without dead ends: 529 [2024-10-11 06:51:21,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:21,332 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 931 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:21,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1253 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-10-11 06:51:21,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2024-10-11 06:51:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.461977186311787) internal successors, (769), 526 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 769 transitions. [2024-10-11 06:51:21,341 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 769 transitions. Word has length 167 [2024-10-11 06:51:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:21,341 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 769 transitions. [2024-10-11 06:51:21,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 769 transitions. [2024-10-11 06:51:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-11 06:51:21,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:21,343 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:21,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 06:51:21,343 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:21,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash 65233822, now seen corresponding path program 1 times [2024-10-11 06:51:21,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:21,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255894930] [2024-10-11 06:51:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:21,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:22,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:22,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255894930] [2024-10-11 06:51:22,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255894930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:22,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:22,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:22,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289135659] [2024-10-11 06:51:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:22,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:22,236 INFO L87 Difference]: Start difference. First operand 527 states and 769 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:22,380 INFO L93 Difference]: Finished difference Result 795 states and 1166 transitions. [2024-10-11 06:51:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:22,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-10-11 06:51:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:22,383 INFO L225 Difference]: With dead ends: 795 [2024-10-11 06:51:22,383 INFO L226 Difference]: Without dead ends: 534 [2024-10-11 06:51:22,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:22,384 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 940 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:22,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1870 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:22,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-10-11 06:51:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2024-10-11 06:51:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 1.4612476370510397) internal successors, (773), 529 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 773 transitions. [2024-10-11 06:51:22,395 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 773 transitions. Word has length 168 [2024-10-11 06:51:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:22,395 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 773 transitions. [2024-10-11 06:51:22,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 773 transitions. [2024-10-11 06:51:22,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-11 06:51:22,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:22,397 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:22,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 06:51:22,397 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:22,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:22,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1517848154, now seen corresponding path program 1 times [2024-10-11 06:51:22,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:22,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78324171] [2024-10-11 06:51:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:22,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:23,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78324171] [2024-10-11 06:51:23,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78324171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:23,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:23,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767279209] [2024-10-11 06:51:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:23,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:23,222 INFO L87 Difference]: Start difference. First operand 530 states and 773 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:23,324 INFO L93 Difference]: Finished difference Result 801 states and 1174 transitions. [2024-10-11 06:51:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-10-11 06:51:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:23,326 INFO L225 Difference]: With dead ends: 801 [2024-10-11 06:51:23,326 INFO L226 Difference]: Without dead ends: 540 [2024-10-11 06:51:23,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:51:23,327 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 948 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:23,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2094 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:23,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-10-11 06:51:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2024-10-11 06:51:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4598130841121495) internal successors, (781), 535 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 781 transitions. [2024-10-11 06:51:23,334 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 781 transitions. Word has length 169 [2024-10-11 06:51:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:23,334 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 781 transitions. [2024-10-11 06:51:23,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 781 transitions. [2024-10-11 06:51:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-11 06:51:23,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:23,336 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:23,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 06:51:23,336 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:23,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:23,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1985431106, now seen corresponding path program 1 times [2024-10-11 06:51:23,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:23,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260333365] [2024-10-11 06:51:23,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:23,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:24,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:24,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260333365] [2024-10-11 06:51:24,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260333365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:24,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:24,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:24,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019428032] [2024-10-11 06:51:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:24,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:24,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:24,609 INFO L87 Difference]: Start difference. First operand 536 states and 781 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:24,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:24,719 INFO L93 Difference]: Finished difference Result 826 states and 1211 transitions. [2024-10-11 06:51:24,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:24,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-10-11 06:51:24,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:24,723 INFO L225 Difference]: With dead ends: 826 [2024-10-11 06:51:24,723 INFO L226 Difference]: Without dead ends: 565 [2024-10-11 06:51:24,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:24,724 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 259 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:24,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1595 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-10-11 06:51:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2024-10-11 06:51:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.4590747330960854) internal successors, (820), 562 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 820 transitions. [2024-10-11 06:51:24,765 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 820 transitions. Word has length 169 [2024-10-11 06:51:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:24,766 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 820 transitions. [2024-10-11 06:51:24,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 820 transitions. [2024-10-11 06:51:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-11 06:51:24,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:24,768 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:24,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 06:51:24,768 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:24,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:24,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1596126227, now seen corresponding path program 1 times [2024-10-11 06:51:24,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:24,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499292572] [2024-10-11 06:51:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:24,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:25,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:25,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499292572] [2024-10-11 06:51:25,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499292572] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:25,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959335364] [2024-10-11 06:51:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:25,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:25,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:25,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:25,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 06:51:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:26,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-11 06:51:26,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:26,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 06:51:26,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959335364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:26,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 06:51:26,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-10-11 06:51:26,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398561260] [2024-10-11 06:51:26,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:26,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:26,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:26,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:26,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-11 06:51:26,475 INFO L87 Difference]: Start difference. First operand 563 states and 820 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 6 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) [2024-10-11 06:51:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:26,712 INFO L93 Difference]: Finished difference Result 1056 states and 1540 transitions. [2024-10-11 06:51:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:26,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 6 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 [2024-10-11 06:51:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:26,714 INFO L225 Difference]: With dead ends: 1056 [2024-10-11 06:51:26,714 INFO L226 Difference]: Without dead ends: 566 [2024-10-11 06:51:26,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-11 06:51:26,715 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 721 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:26,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1817 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 06:51:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-10-11 06:51:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-10-11 06:51:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.4566371681415928) internal successors, (823), 565 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 823 transitions. [2024-10-11 06:51:26,724 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 823 transitions. Word has length 170 [2024-10-11 06:51:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:26,724 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 823 transitions. [2024-10-11 06:51:26,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 6 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) [2024-10-11 06:51:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 823 transitions. [2024-10-11 06:51:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-11 06:51:26,725 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:26,726 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:26,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 06:51:26,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:26,927 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:26,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1635151258, now seen corresponding path program 1 times [2024-10-11 06:51:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729224243] [2024-10-11 06:51:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:27,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729224243] [2024-10-11 06:51:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729224243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:27,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:27,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:27,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138096251] [2024-10-11 06:51:27,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:27,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:27,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:27,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:27,786 INFO L87 Difference]: Start difference. First operand 566 states and 823 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:27,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:27,890 INFO L93 Difference]: Finished difference Result 983 states and 1432 transitions. [2024-10-11 06:51:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:27,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-10-11 06:51:27,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:27,894 INFO L225 Difference]: With dead ends: 983 [2024-10-11 06:51:27,894 INFO L226 Difference]: Without dead ends: 566 [2024-10-11 06:51:27,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:27,896 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 986 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:27,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1258 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:27,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-10-11 06:51:27,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-10-11 06:51:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.454867256637168) internal successors, (822), 565 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 822 transitions. [2024-10-11 06:51:27,910 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 822 transitions. Word has length 171 [2024-10-11 06:51:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:27,910 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 822 transitions. [2024-10-11 06:51:27,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 822 transitions. [2024-10-11 06:51:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-11 06:51:27,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:27,912 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:27,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 06:51:27,913 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:27,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1399115688, now seen corresponding path program 1 times [2024-10-11 06:51:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:27,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570819333] [2024-10-11 06:51:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:27,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:28,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:28,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570819333] [2024-10-11 06:51:28,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570819333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:28,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:28,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270122316] [2024-10-11 06:51:28,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:28,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:28,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:28,754 INFO L87 Difference]: Start difference. First operand 566 states and 822 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:28,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:28,864 INFO L93 Difference]: Finished difference Result 951 states and 1385 transitions. [2024-10-11 06:51:28,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:28,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-10-11 06:51:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:28,867 INFO L225 Difference]: With dead ends: 951 [2024-10-11 06:51:28,867 INFO L226 Difference]: Without dead ends: 564 [2024-10-11 06:51:28,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:28,869 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 968 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:28,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1258 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-10-11 06:51:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2024-10-11 06:51:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 1.4547069271758437) internal successors, (819), 563 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 819 transitions. [2024-10-11 06:51:28,883 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 819 transitions. Word has length 172 [2024-10-11 06:51:28,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:28,884 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 819 transitions. [2024-10-11 06:51:28,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 819 transitions. [2024-10-11 06:51:28,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-11 06:51:28,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:28,886 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:28,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 06:51:28,887 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:28,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1245167244, now seen corresponding path program 1 times [2024-10-11 06:51:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:28,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833893607] [2024-10-11 06:51:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833893607] [2024-10-11 06:51:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833893607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:30,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581150955] [2024-10-11 06:51:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:30,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:30,317 INFO L87 Difference]: Start difference. First operand 564 states and 819 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:30,426 INFO L93 Difference]: Finished difference Result 827 states and 1209 transitions. [2024-10-11 06:51:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-10-11 06:51:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:30,429 INFO L225 Difference]: With dead ends: 827 [2024-10-11 06:51:30,429 INFO L226 Difference]: Without dead ends: 566 [2024-10-11 06:51:30,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:30,430 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 254 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:30,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1596 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-10-11 06:51:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 565. [2024-10-11 06:51:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.4539007092198581) internal successors, (820), 564 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:30,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 820 transitions. [2024-10-11 06:51:30,443 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 820 transitions. Word has length 172 [2024-10-11 06:51:30,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:30,443 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 820 transitions. [2024-10-11 06:51:30,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 820 transitions. [2024-10-11 06:51:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-11 06:51:30,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:30,445 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:30,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 06:51:30,446 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:30,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash -973103796, now seen corresponding path program 1 times [2024-10-11 06:51:30,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:30,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153992723] [2024-10-11 06:51:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:30,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:31,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:31,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153992723] [2024-10-11 06:51:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153992723] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:31,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785076063] [2024-10-11 06:51:31,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:31,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:31,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:31,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:31,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 06:51:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:32,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-10-11 06:51:32,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:33,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785076063] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:51:34,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:51:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 11] total 34 [2024-10-11 06:51:34,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827405598] [2024-10-11 06:51:34,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:51:34,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-11 06:51:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-11 06:51:34,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2024-10-11 06:51:34,237 INFO L87 Difference]: Start difference. First operand 565 states and 820 transitions. Second operand has 35 states, 35 states have (on average 14.485714285714286) internal successors, (507), 34 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:35,927 INFO L93 Difference]: Finished difference Result 1810 states and 2641 transitions. [2024-10-11 06:51:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 06:51:35,928 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 14.485714285714286) internal successors, (507), 34 states have internal predecessors, (507), 0 states have call successors, (0), 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 173 [2024-10-11 06:51:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:35,931 INFO L225 Difference]: With dead ends: 1810 [2024-10-11 06:51:35,932 INFO L226 Difference]: Without dead ends: 1303 [2024-10-11 06:51:35,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=559, Invalid=2863, Unknown=0, NotChecked=0, Total=3422 [2024-10-11 06:51:35,934 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 8772 mSDsluCounter, 7444 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8772 SdHoareTripleChecker+Valid, 7781 SdHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:35,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8772 Valid, 7781 Invalid, 2040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-11 06:51:35,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2024-10-11 06:51:35,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1059. [2024-10-11 06:51:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1058 states have (on average 1.45179584120983) internal successors, (1536), 1058 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1536 transitions. [2024-10-11 06:51:35,948 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1536 transitions. Word has length 173 [2024-10-11 06:51:35,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:35,948 INFO L471 AbstractCegarLoop]: Abstraction has 1059 states and 1536 transitions. [2024-10-11 06:51:35,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 14.485714285714286) internal successors, (507), 34 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1536 transitions. [2024-10-11 06:51:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-11 06:51:35,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:35,950 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:35,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 06:51:36,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:36,157 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:36,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:36,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1313614546, now seen corresponding path program 1 times [2024-10-11 06:51:36,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:36,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709162999] [2024-10-11 06:51:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:36,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:36,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:36,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709162999] [2024-10-11 06:51:36,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709162999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:36,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:36,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:51:36,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804944922] [2024-10-11 06:51:36,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:36,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:36,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:36,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:36,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:36,575 INFO L87 Difference]: Start difference. First operand 1059 states and 1536 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 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) [2024-10-11 06:51:36,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:36,667 INFO L93 Difference]: Finished difference Result 2095 states and 3042 transitions. [2024-10-11 06:51:36,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:51:36,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 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 174 [2024-10-11 06:51:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:36,670 INFO L225 Difference]: With dead ends: 2095 [2024-10-11 06:51:36,670 INFO L226 Difference]: Without dead ends: 1086 [2024-10-11 06:51:36,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:36,672 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 5 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:36,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2568 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2024-10-11 06:51:36,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1086. [2024-10-11 06:51:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.447926267281106) internal successors, (1571), 1085 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1571 transitions. [2024-10-11 06:51:36,686 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1571 transitions. Word has length 174 [2024-10-11 06:51:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:36,686 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1571 transitions. [2024-10-11 06:51:36,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 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) [2024-10-11 06:51:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1571 transitions. [2024-10-11 06:51:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-11 06:51:36,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:36,688 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:36,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-11 06:51:36,688 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:36,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1968426325, now seen corresponding path program 1 times [2024-10-11 06:51:36,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:36,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254188522] [2024-10-11 06:51:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:36,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:36,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:36,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254188522] [2024-10-11 06:51:36,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254188522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:36,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:36,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:36,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741611001] [2024-10-11 06:51:36,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:36,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:36,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:36,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:36,961 INFO L87 Difference]: Start difference. First operand 1086 states and 1571 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 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) [2024-10-11 06:51:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:37,012 INFO L93 Difference]: Finished difference Result 1601 states and 2318 transitions. [2024-10-11 06:51:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:37,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 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 174 [2024-10-11 06:51:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:37,015 INFO L225 Difference]: With dead ends: 1601 [2024-10-11 06:51:37,015 INFO L226 Difference]: Without dead ends: 1076 [2024-10-11 06:51:37,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:37,017 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 1053 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:37,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1270 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2024-10-11 06:51:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1076. [2024-10-11 06:51:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 1.4465116279069767) internal successors, (1555), 1075 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1555 transitions. [2024-10-11 06:51:37,031 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1555 transitions. Word has length 174 [2024-10-11 06:51:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:37,031 INFO L471 AbstractCegarLoop]: Abstraction has 1076 states and 1555 transitions. [2024-10-11 06:51:37,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 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) [2024-10-11 06:51:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1555 transitions. [2024-10-11 06:51:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-11 06:51:37,032 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:37,032 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:37,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-11 06:51:37,032 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:37,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash 174292698, now seen corresponding path program 1 times [2024-10-11 06:51:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608181858] [2024-10-11 06:51:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:37,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:37,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608181858] [2024-10-11 06:51:37,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608181858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:37,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334066261] [2024-10-11 06:51:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:37,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:37,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:37,284 INFO L87 Difference]: Start difference. First operand 1076 states and 1555 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:37,339 INFO L93 Difference]: Finished difference Result 2094 states and 3029 transitions. [2024-10-11 06:51:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-10-11 06:51:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:37,343 INFO L225 Difference]: With dead ends: 2094 [2024-10-11 06:51:37,344 INFO L226 Difference]: Without dead ends: 1073 [2024-10-11 06:51:37,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:37,345 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 1071 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:37,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1271 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2024-10-11 06:51:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1073. [2024-10-11 06:51:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 1.444962686567164) internal successors, (1549), 1072 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1549 transitions. [2024-10-11 06:51:37,370 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1549 transitions. Word has length 175 [2024-10-11 06:51:37,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:37,370 INFO L471 AbstractCegarLoop]: Abstraction has 1073 states and 1549 transitions. [2024-10-11 06:51:37,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1549 transitions. [2024-10-11 06:51:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-11 06:51:37,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:37,375 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:37,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-11 06:51:37,376 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:37,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash -298092895, now seen corresponding path program 1 times [2024-10-11 06:51:37,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:37,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002117825] [2024-10-11 06:51:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:37,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002117825] [2024-10-11 06:51:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002117825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:37,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:37,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:51:37,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068779598] [2024-10-11 06:51:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:37,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:51:37,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:51:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:51:37,882 INFO L87 Difference]: Start difference. First operand 1073 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:37,948 INFO L93 Difference]: Finished difference Result 1841 states and 2669 transitions. [2024-10-11 06:51:37,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:37,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-10-11 06:51:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:37,951 INFO L225 Difference]: With dead ends: 1841 [2024-10-11 06:51:37,951 INFO L226 Difference]: Without dead ends: 819 [2024-10-11 06:51:37,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:37,953 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 1089 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:37,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1264 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:51:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-11 06:51:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-10-11 06:51:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 818 states have (on average 1.4535452322738387) internal successors, (1189), 818 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1189 transitions. [2024-10-11 06:51:37,966 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1189 transitions. Word has length 175 [2024-10-11 06:51:37,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:37,966 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1189 transitions. [2024-10-11 06:51:37,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1189 transitions. [2024-10-11 06:51:37,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-10-11 06:51:37,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:37,969 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:37,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-11 06:51:37,969 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:37,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:37,970 INFO L85 PathProgramCache]: Analyzing trace with hash -323242390, now seen corresponding path program 1 times [2024-10-11 06:51:37,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:37,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525729726] [2024-10-11 06:51:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:37,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:39,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:39,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525729726] [2024-10-11 06:51:39,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525729726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:39,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:39,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:51:39,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638566369] [2024-10-11 06:51:39,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:39,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:39,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:39,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:39,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:39,802 INFO L87 Difference]: Start difference. First operand 819 states and 1189 transitions. Second operand has 7 states, 7 states have (on average 43.285714285714285) internal successors, (303), 7 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:40,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:40,137 INFO L93 Difference]: Finished difference Result 2930 states and 4316 transitions. [2024-10-11 06:51:40,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:51:40,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.285714285714285) internal successors, (303), 7 states have internal predecessors, (303), 0 states have call successors, (0), 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 303 [2024-10-11 06:51:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:40,143 INFO L225 Difference]: With dead ends: 2930 [2024-10-11 06:51:40,143 INFO L226 Difference]: Without dead ends: 2405 [2024-10-11 06:51:40,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:51:40,144 INFO L432 NwaCegarLoop]: 1004 mSDtfsCounter, 1237 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 4091 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:40,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 4091 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:51:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2024-10-11 06:51:40,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 1502. [2024-10-11 06:51:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 1.457694870086609) internal successors, (2188), 1501 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2188 transitions. [2024-10-11 06:51:40,165 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2188 transitions. Word has length 303 [2024-10-11 06:51:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:40,165 INFO L471 AbstractCegarLoop]: Abstraction has 1502 states and 2188 transitions. [2024-10-11 06:51:40,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.285714285714285) internal successors, (303), 7 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2188 transitions. [2024-10-11 06:51:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-10-11 06:51:40,167 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:40,168 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:40,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-11 06:51:40,168 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:40,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1395342646, now seen corresponding path program 1 times [2024-10-11 06:51:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285388087] [2024-10-11 06:51:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:42,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285388087] [2024-10-11 06:51:42,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285388087] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:42,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:42,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 06:51:42,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254291455] [2024-10-11 06:51:42,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:42,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 06:51:42,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 06:51:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:51:42,666 INFO L87 Difference]: Start difference. First operand 1502 states and 2188 transitions. Second operand has 9 states, 9 states have (on average 33.77777777777778) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:42,967 INFO L93 Difference]: Finished difference Result 3427 states and 5041 transitions. [2024-10-11 06:51:42,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 06:51:42,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.77777777777778) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 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 304 [2024-10-11 06:51:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:42,975 INFO L225 Difference]: With dead ends: 3427 [2024-10-11 06:51:42,975 INFO L226 Difference]: Without dead ends: 2444 [2024-10-11 06:51:42,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-10-11 06:51:42,977 INFO L432 NwaCegarLoop]: 712 mSDtfsCounter, 1497 mSDsluCounter, 3729 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:42,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 4441 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 06:51:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2024-10-11 06:51:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 1584. [2024-10-11 06:51:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 1.4523057485786481) internal successors, (2299), 1583 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2299 transitions. [2024-10-11 06:51:43,003 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2299 transitions. Word has length 304 [2024-10-11 06:51:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:43,004 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2299 transitions. [2024-10-11 06:51:43,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.77777777777778) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2299 transitions. [2024-10-11 06:51:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-10-11 06:51:43,007 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:43,007 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:43,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-11 06:51:43,007 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:43,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2013568563, now seen corresponding path program 1 times [2024-10-11 06:51:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:43,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426292302] [2024-10-11 06:51:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:43,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-10-11 06:51:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:44,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426292302] [2024-10-11 06:51:44,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426292302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:44,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:44,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:51:44,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71598125] [2024-10-11 06:51:44,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:44,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:51:44,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:44,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:51:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:51:44,704 INFO L87 Difference]: Start difference. First operand 1584 states and 2299 transitions. Second operand has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:44,794 INFO L93 Difference]: Finished difference Result 2877 states and 4188 transitions. [2024-10-11 06:51:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:51:44,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2024-10-11 06:51:44,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:44,799 INFO L225 Difference]: With dead ends: 2877 [2024-10-11 06:51:44,799 INFO L226 Difference]: Without dead ends: 1349 [2024-10-11 06:51:44,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:51:44,802 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 989 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:44,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1694 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:51:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2024-10-11 06:51:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1349. [2024-10-11 06:51:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.4562314540059347) internal successors, (1963), 1348 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1963 transitions. [2024-10-11 06:51:44,840 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1963 transitions. Word has length 304 [2024-10-11 06:51:44,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:44,841 INFO L471 AbstractCegarLoop]: Abstraction has 1349 states and 1963 transitions. [2024-10-11 06:51:44,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.666666666666664) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:44,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1963 transitions. [2024-10-11 06:51:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-10-11 06:51:44,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:44,846 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:44,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-11 06:51:44,847 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:44,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1217718767, now seen corresponding path program 1 times [2024-10-11 06:51:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:44,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867527067] [2024-10-11 06:51:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:44,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:47,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:47,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867527067] [2024-10-11 06:51:47,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867527067] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:51:47,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:51:47,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:51:47,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163522758] [2024-10-11 06:51:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:51:47,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:51:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:51:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:51:47,729 INFO L87 Difference]: Start difference. First operand 1349 states and 1963 transitions. Second operand has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 6 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) [2024-10-11 06:51:47,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:51:47,972 INFO L93 Difference]: Finished difference Result 3316 states and 4878 transitions. [2024-10-11 06:51:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:51:47,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 6 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 305 [2024-10-11 06:51:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:51:47,977 INFO L225 Difference]: With dead ends: 3316 [2024-10-11 06:51:47,977 INFO L226 Difference]: Without dead ends: 2254 [2024-10-11 06:51:47,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:51:47,979 INFO L432 NwaCegarLoop]: 685 mSDtfsCounter, 1854 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 06:51:47,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 2819 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 06:51:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-10-11 06:51:47,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1351. [2024-10-11 06:51:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1350 states have (on average 1.454074074074074) internal successors, (1963), 1350 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:51:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1963 transitions. [2024-10-11 06:51:47,997 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1963 transitions. Word has length 305 [2024-10-11 06:51:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:51:47,997 INFO L471 AbstractCegarLoop]: Abstraction has 1351 states and 1963 transitions. [2024-10-11 06:51:47,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 6 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) [2024-10-11 06:51:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1963 transitions. [2024-10-11 06:51:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-10-11 06:51:48,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:51:48,000 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:51:48,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-11 06:51:48,000 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:51:48,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:51:48,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1017681779, now seen corresponding path program 1 times [2024-10-11 06:51:48,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:51:48,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161052335] [2024-10-11 06:51:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:48,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:51:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 119 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:51,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:51:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161052335] [2024-10-11 06:51:51,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161052335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:51:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576288390] [2024-10-11 06:51:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:51:51,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:51:51,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:51:51,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:51:51,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 06:51:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:51:52,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 2009 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-11 06:51:52,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:51:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 99 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:55,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:51:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 93 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:51:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576288390] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:51:58,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:51:58,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 21] total 46 [2024-10-11 06:51:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421815783] [2024-10-11 06:51:58,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:51:58,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-11 06:51:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:51:58,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-11 06:51:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1787, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 06:51:58,645 INFO L87 Difference]: Start difference. First operand 1351 states and 1963 transitions. Second operand has 46 states, 46 states have (on average 17.804347826086957) internal successors, (819), 46 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:52:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:52:08,743 INFO L93 Difference]: Finished difference Result 9991 states and 14790 transitions. [2024-10-11 06:52:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-10-11 06:52:08,744 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 17.804347826086957) internal successors, (819), 46 states have internal predecessors, (819), 0 states have call successors, (0), 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 306 [2024-10-11 06:52:08,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:52:08,769 INFO L225 Difference]: With dead ends: 9991 [2024-10-11 06:52:08,769 INFO L226 Difference]: Without dead ends: 8927 [2024-10-11 06:52:08,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4716 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2491, Invalid=14539, Unknown=0, NotChecked=0, Total=17030 [2024-10-11 06:52:08,779 INFO L432 NwaCegarLoop]: 993 mSDtfsCounter, 13694 mSDsluCounter, 28844 mSDsCounter, 0 mSdLazyCounter, 4846 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13694 SdHoareTripleChecker+Valid, 29837 SdHoareTripleChecker+Invalid, 4909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:52:08,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13694 Valid, 29837 Invalid, 4909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 4846 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-11 06:52:08,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2024-10-11 06:52:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 4274. [2024-10-11 06:52:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 4273 states have (on average 1.4645448162883221) internal successors, (6258), 4273 states have internal predecessors, (6258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:52:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6258 transitions. [2024-10-11 06:52:08,947 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6258 transitions. Word has length 306 [2024-10-11 06:52:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:52:08,948 INFO L471 AbstractCegarLoop]: Abstraction has 4274 states and 6258 transitions. [2024-10-11 06:52:08,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 17.804347826086957) internal successors, (819), 46 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:52:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6258 transitions. [2024-10-11 06:52:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-11 06:52:08,957 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:52:08,957 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:52:08,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 06:52:09,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:52:09,162 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:52:09,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:52:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1088261736, now seen corresponding path program 1 times [2024-10-11 06:52:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:52:09,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391853282] [2024-10-11 06:52:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:52:09,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:52:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:52:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 106 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:52:13,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:52:13,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391853282] [2024-10-11 06:52:13,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391853282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:52:13,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298155119] [2024-10-11 06:52:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:52:13,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:52:13,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:52:13,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:52:13,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 06:52:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:52:14,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-10-11 06:52:14,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:52:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 43 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:52:15,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:52:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-11 06:52:16,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298155119] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 06:52:16,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 06:52:16,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 19] total 34 [2024-10-11 06:52:16,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641558430] [2024-10-11 06:52:16,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:52:16,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 06:52:16,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:52:16,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 06:52:16,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 06:52:16,038 INFO L87 Difference]: Start difference. First operand 4274 states and 6258 transitions. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:52:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:52:16,225 INFO L93 Difference]: Finished difference Result 12812 states and 18920 transitions. [2024-10-11 06:52:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 06:52:16,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 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 309 [2024-10-11 06:52:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:52:16,235 INFO L225 Difference]: With dead ends: 12812 [2024-10-11 06:52:16,235 INFO L226 Difference]: Without dead ends: 9179 [2024-10-11 06:52:16,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 06:52:16,240 INFO L432 NwaCegarLoop]: 907 mSDtfsCounter, 444 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:52:16,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 4042 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:52:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9179 states. [2024-10-11 06:52:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9179 to 6678. [2024-10-11 06:52:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6678 states, 6677 states have (on average 1.4740152763217014) internal successors, (9842), 6677 states have internal predecessors, (9842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:52:16,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6678 states to 6678 states and 9842 transitions. [2024-10-11 06:52:16,301 INFO L78 Accepts]: Start accepts. Automaton has 6678 states and 9842 transitions. Word has length 309 [2024-10-11 06:52:16,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:52:16,302 INFO L471 AbstractCegarLoop]: Abstraction has 6678 states and 9842 transitions. [2024-10-11 06:52:16,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:52:16,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6678 states and 9842 transitions. [2024-10-11 06:52:16,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-11 06:52:16,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:52:16,307 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:52:16,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 06:52:16,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-11 06:52:16,511 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:52:16,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:52:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1984802856, now seen corresponding path program 1 times [2024-10-11 06:52:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:52:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787894491] [2024-10-11 06:52:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:52:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms