./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 067fe51884f92ae3774f211cf9d4291369df85b7690d3eee54cd23a70c2ea301 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 19:54:06,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 19:54:06,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 19:54:06,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 19:54:06,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 19:54:06,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 19:54:06,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 19:54:06,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 19:54:06,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 19:54:06,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 19:54:06,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 19:54:06,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 19:54:06,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 19:54:06,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 19:54:06,999 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 19:54:07,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 19:54:07,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 19:54:07,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 19:54:07,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 19:54:07,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 19:54:07,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 19:54:07,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 19:54:07,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 19:54:07,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 19:54:07,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 19:54:07,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 19:54:07,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 19:54:07,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 19:54:07,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 19:54:07,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 19:54:07,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 19:54:07,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 19:54:07,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:54:07,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 19:54:07,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 19:54:07,008 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 19:54:07,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 19:54:07,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 19:54:07,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 19:54:07,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 19:54:07,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 19:54:07,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 19:54:07,009 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 067fe51884f92ae3774f211cf9d4291369df85b7690d3eee54cd23a70c2ea301 [2024-10-12 19:54:07,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 19:54:07,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 19:54:07,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 19:54:07,289 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 19:54:07,289 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 19:54:07,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2024-10-12 19:54:08,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 19:54:08,925 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 19:54:08,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2024-10-12 19:54:08,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86db9e3ce/60cdbdae6275499281411d8feedea516/FLAGddb0af7db [2024-10-12 19:54:08,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86db9e3ce/60cdbdae6275499281411d8feedea516 [2024-10-12 19:54:08,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 19:54:08,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 19:54:08,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 19:54:08,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 19:54:08,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 19:54:08,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:54:08" (1/1) ... [2024-10-12 19:54:08,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221b276f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:08, skipping insertion in model container [2024-10-12 19:54:08,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:54:08" (1/1) ... [2024-10-12 19:54:09,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 19:54:09,186 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/systemc/mem_slave_tlm.5.cil.c[646,659] [2024-10-12 19:54:09,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:54:09,307 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 19:54:09,317 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/systemc/mem_slave_tlm.5.cil.c[646,659] [2024-10-12 19:54:09,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:54:09,383 INFO L204 MainTranslator]: Completed translation [2024-10-12 19:54:09,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09 WrapperNode [2024-10-12 19:54:09,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 19:54:09,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 19:54:09,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 19:54:09,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 19:54:09,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,433 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 867 [2024-10-12 19:54:09,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 19:54:09,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 19:54:09,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 19:54:09,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 19:54:09,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,460 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 19:54:09,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 19:54:09,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 19:54:09,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 19:54:09,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 19:54:09,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (1/1) ... [2024-10-12 19:54:09,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:54:09,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:09,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 19:54:09,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 19:54:09,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 19:54:09,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 19:54:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-12 19:54:09,576 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-12 19:54:09,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 19:54:09,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 19:54:09,674 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 19:54:09,676 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 19:54:10,436 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2024-10-12 19:54:10,436 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 19:54:10,474 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 19:54:10,475 INFO L314 CfgBuilder]: Removed 13 assume(true) statements. [2024-10-12 19:54:10,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:54:10 BoogieIcfgContainer [2024-10-12 19:54:10,475 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 19:54:10,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 19:54:10,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 19:54:10,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 19:54:10,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:54:08" (1/3) ... [2024-10-12 19:54:10,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3054b6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:54:10, skipping insertion in model container [2024-10-12 19:54:10,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:54:09" (2/3) ... [2024-10-12 19:54:10,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3054b6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:54:10, skipping insertion in model container [2024-10-12 19:54:10,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:54:10" (3/3) ... [2024-10-12 19:54:10,486 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2024-10-12 19:54:10,502 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 19:54:10,503 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 19:54:10,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 19:54:10,566 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;@33685e96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 19:54:10,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 19:54:10,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 247 states have (on average 1.9392712550607287) internal successors, (479), 253 states have internal predecessors, (479), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-12 19:54:10,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 19:54:10,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:10,584 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] [2024-10-12 19:54:10,584 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:10,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1472031047, now seen corresponding path program 1 times [2024-10-12 19:54:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:10,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858786312] [2024-10-12 19:54:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:10,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:10,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858786312] [2024-10-12 19:54:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858786312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:10,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:10,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:54:10,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025313480] [2024-10-12 19:54:10,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:10,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:10,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:10,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:10,826 INFO L87 Difference]: Start difference. First operand has 255 states, 247 states have (on average 1.9392712550607287) internal successors, (479), 253 states have internal predecessors, (479), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:11,276 INFO L93 Difference]: Finished difference Result 674 states and 1291 transitions. [2024-10-12 19:54:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:11,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-12 19:54:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:11,287 INFO L225 Difference]: With dead ends: 674 [2024-10-12 19:54:11,287 INFO L226 Difference]: Without dead ends: 419 [2024-10-12 19:54:11,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:11,293 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 255 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:11,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 718 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:54:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-10-12 19:54:11,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 412. [2024-10-12 19:54:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 406 states have (on average 1.6477832512315271) internal successors, (669), 410 states have internal predecessors, (669), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 674 transitions. [2024-10-12 19:54:11,382 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 674 transitions. Word has length 26 [2024-10-12 19:54:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:11,382 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 674 transitions. [2024-10-12 19:54:11,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 674 transitions. [2024-10-12 19:54:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-12 19:54:11,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:11,386 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:11,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 19:54:11,387 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:11,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1883838620, now seen corresponding path program 1 times [2024-10-12 19:54:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:11,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327552529] [2024-10-12 19:54:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:11,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:11,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327552529] [2024-10-12 19:54:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327552529] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:11,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:11,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029776787] [2024-10-12 19:54:11,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:11,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:11,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:11,495 INFO L87 Difference]: Start difference. First operand 412 states and 674 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:11,635 INFO L93 Difference]: Finished difference Result 1084 states and 1800 transitions. [2024-10-12 19:54:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:11,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-12 19:54:11,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:11,641 INFO L225 Difference]: With dead ends: 1084 [2024-10-12 19:54:11,641 INFO L226 Difference]: Without dead ends: 685 [2024-10-12 19:54:11,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:11,645 INFO L432 NwaCegarLoop]: 596 mSDtfsCounter, 320 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:11,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 948 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-10-12 19:54:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 678. [2024-10-12 19:54:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 672 states have (on average 1.6800595238095237) internal successors, (1129), 676 states have internal predecessors, (1129), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1134 transitions. [2024-10-12 19:54:11,678 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1134 transitions. Word has length 39 [2024-10-12 19:54:11,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:11,678 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 1134 transitions. [2024-10-12 19:54:11,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1134 transitions. [2024-10-12 19:54:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-12 19:54:11,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:11,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:11,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 19:54:11,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:11,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash 886388077, now seen corresponding path program 1 times [2024-10-12 19:54:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:11,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151904779] [2024-10-12 19:54:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:11,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151904779] [2024-10-12 19:54:11,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151904779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:11,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:11,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:54:11,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40963298] [2024-10-12 19:54:11,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:11,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:11,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:11,750 INFO L87 Difference]: Start difference. First operand 678 states and 1134 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:11,827 INFO L93 Difference]: Finished difference Result 1692 states and 2831 transitions. [2024-10-12 19:54:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:11,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-12 19:54:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:11,833 INFO L225 Difference]: With dead ends: 1692 [2024-10-12 19:54:11,834 INFO L226 Difference]: Without dead ends: 1038 [2024-10-12 19:54:11,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:11,837 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 344 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:11,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 746 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2024-10-12 19:54:11,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1027. [2024-10-12 19:54:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1021 states have (on average 1.6718903036238981) internal successors, (1707), 1025 states have internal predecessors, (1707), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1712 transitions. [2024-10-12 19:54:11,876 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1712 transitions. Word has length 40 [2024-10-12 19:54:11,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:11,879 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1712 transitions. [2024-10-12 19:54:11,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1712 transitions. [2024-10-12 19:54:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-12 19:54:11,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:11,881 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:11,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 19:54:11,882 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:11,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:11,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1060713339, now seen corresponding path program 1 times [2024-10-12 19:54:11,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:11,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195961072] [2024-10-12 19:54:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:11,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:11,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195961072] [2024-10-12 19:54:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195961072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:11,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:11,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729306671] [2024-10-12 19:54:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:11,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:54:11,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:54:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 19:54:11,952 INFO L87 Difference]: Start difference. First operand 1027 states and 1712 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:12,453 INFO L93 Difference]: Finished difference Result 3650 states and 6108 transitions. [2024-10-12 19:54:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:54:12,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-12 19:54:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:12,472 INFO L225 Difference]: With dead ends: 3650 [2024-10-12 19:54:12,473 INFO L226 Difference]: Without dead ends: 2647 [2024-10-12 19:54:12,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:54:12,479 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 1133 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:12,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1519 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:54:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2024-10-12 19:54:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2149. [2024-10-12 19:54:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2143 states have (on average 1.6719552029864675) internal successors, (3583), 2147 states have internal predecessors, (3583), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3588 transitions. [2024-10-12 19:54:12,544 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3588 transitions. Word has length 43 [2024-10-12 19:54:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:12,544 INFO L471 AbstractCegarLoop]: Abstraction has 2149 states and 3588 transitions. [2024-10-12 19:54:12,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3588 transitions. [2024-10-12 19:54:12,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 19:54:12,546 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:12,546 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:12,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 19:54:12,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:12,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1697515514, now seen corresponding path program 1 times [2024-10-12 19:54:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896202162] [2024-10-12 19:54:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:12,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896202162] [2024-10-12 19:54:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896202162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:12,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:12,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448747653] [2024-10-12 19:54:12,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:12,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:12,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:12,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:12,577 INFO L87 Difference]: Start difference. First operand 2149 states and 3588 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:12,728 INFO L93 Difference]: Finished difference Result 6007 states and 9996 transitions. [2024-10-12 19:54:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 19:54:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:12,741 INFO L225 Difference]: With dead ends: 6007 [2024-10-12 19:54:12,742 INFO L226 Difference]: Without dead ends: 3876 [2024-10-12 19:54:12,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:12,747 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 380 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:12,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 720 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2024-10-12 19:54:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 3809. [2024-10-12 19:54:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3809 states, 3803 states have (on average 1.638706284512227) internal successors, (6232), 3807 states have internal predecessors, (6232), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 6237 transitions. [2024-10-12 19:54:12,889 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 6237 transitions. Word has length 50 [2024-10-12 19:54:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:12,890 INFO L471 AbstractCegarLoop]: Abstraction has 3809 states and 6237 transitions. [2024-10-12 19:54:12,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 6237 transitions. [2024-10-12 19:54:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 19:54:12,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:12,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:12,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 19:54:12,891 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:12,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash -452667645, now seen corresponding path program 1 times [2024-10-12 19:54:12,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:12,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908157707] [2024-10-12 19:54:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:12,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:12,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:12,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908157707] [2024-10-12 19:54:12,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908157707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:12,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:12,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:54:12,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894054337] [2024-10-12 19:54:12,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:12,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:12,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:12,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:12,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:12,922 INFO L87 Difference]: Start difference. First operand 3809 states and 6237 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:13,059 INFO L93 Difference]: Finished difference Result 9062 states and 14802 transitions. [2024-10-12 19:54:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:13,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-12 19:54:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:13,077 INFO L225 Difference]: With dead ends: 9062 [2024-10-12 19:54:13,077 INFO L226 Difference]: Without dead ends: 5275 [2024-10-12 19:54:13,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:13,084 INFO L432 NwaCegarLoop]: 412 mSDtfsCounter, 359 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:13,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 657 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:54:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2024-10-12 19:54:13,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 4999. [2024-10-12 19:54:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 4993 states have (on average 1.621470058081314) internal successors, (8096), 4997 states have internal predecessors, (8096), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:13,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 8101 transitions. [2024-10-12 19:54:13,256 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 8101 transitions. Word has length 50 [2024-10-12 19:54:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:13,256 INFO L471 AbstractCegarLoop]: Abstraction has 4999 states and 8101 transitions. [2024-10-12 19:54:13,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:13,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 8101 transitions. [2024-10-12 19:54:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 19:54:13,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:13,258 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:13,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 19:54:13,259 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:13,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash 16702740, now seen corresponding path program 1 times [2024-10-12 19:54:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034599361] [2024-10-12 19:54:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:13,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034599361] [2024-10-12 19:54:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034599361] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:13,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102325031] [2024-10-12 19:54:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:13,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:13,297 INFO L87 Difference]: Start difference. First operand 4999 states and 8101 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:13,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:13,613 INFO L93 Difference]: Finished difference Result 12099 states and 19697 transitions. [2024-10-12 19:54:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:13,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-12 19:54:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:13,635 INFO L225 Difference]: With dead ends: 12099 [2024-10-12 19:54:13,635 INFO L226 Difference]: Without dead ends: 7122 [2024-10-12 19:54:13,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:13,643 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 245 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:13,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 807 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:54:13,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2024-10-12 19:54:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 5783. [2024-10-12 19:54:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5777 states have (on average 1.5688073394495412) internal successors, (9063), 5781 states have internal predecessors, (9063), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 9068 transitions. [2024-10-12 19:54:13,879 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 9068 transitions. Word has length 58 [2024-10-12 19:54:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:13,879 INFO L471 AbstractCegarLoop]: Abstraction has 5783 states and 9068 transitions. [2024-10-12 19:54:13,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 9068 transitions. [2024-10-12 19:54:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-12 19:54:13,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:13,882 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:13,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 19:54:13,883 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:13,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1400755736, now seen corresponding path program 1 times [2024-10-12 19:54:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:13,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661899164] [2024-10-12 19:54:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:13,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:13,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:13,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661899164] [2024-10-12 19:54:13,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661899164] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:13,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:13,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:54:13,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987307392] [2024-10-12 19:54:13,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:13,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:13,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:13,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:13,930 INFO L87 Difference]: Start difference. First operand 5783 states and 9068 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:14,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:14,099 INFO L93 Difference]: Finished difference Result 11410 states and 17914 transitions. [2024-10-12 19:54:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:14,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-12 19:54:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:14,116 INFO L225 Difference]: With dead ends: 11410 [2024-10-12 19:54:14,116 INFO L226 Difference]: Without dead ends: 5649 [2024-10-12 19:54:14,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:14,124 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 336 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:14,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 409 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:54:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2024-10-12 19:54:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5649. [2024-10-12 19:54:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5649 states, 5643 states have (on average 1.5498848130427079) internal successors, (8746), 5647 states have internal predecessors, (8746), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 8751 transitions. [2024-10-12 19:54:14,315 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 8751 transitions. Word has length 60 [2024-10-12 19:54:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:14,316 INFO L471 AbstractCegarLoop]: Abstraction has 5649 states and 8751 transitions. [2024-10-12 19:54:14,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 8751 transitions. [2024-10-12 19:54:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 19:54:14,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:14,318 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:14,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 19:54:14,318 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:14,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -786114174, now seen corresponding path program 1 times [2024-10-12 19:54:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:14,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427625163] [2024-10-12 19:54:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:14,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:14,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:14,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427625163] [2024-10-12 19:54:14,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427625163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:14,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:14,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:14,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034991115] [2024-10-12 19:54:14,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:14,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:14,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:14,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:14,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:14,381 INFO L87 Difference]: Start difference. First operand 5649 states and 8751 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:14,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:14,547 INFO L93 Difference]: Finished difference Result 10841 states and 16896 transitions. [2024-10-12 19:54:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:14,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-12 19:54:14,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:14,558 INFO L225 Difference]: With dead ends: 10841 [2024-10-12 19:54:14,559 INFO L226 Difference]: Without dead ends: 5214 [2024-10-12 19:54:14,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:14,567 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 145 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:14,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 848 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2024-10-12 19:54:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 4557. [2024-10-12 19:54:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4557 states, 4551 states have (on average 1.5713030103274006) internal successors, (7151), 4555 states have internal predecessors, (7151), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 7156 transitions. [2024-10-12 19:54:14,749 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 7156 transitions. Word has length 61 [2024-10-12 19:54:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:14,749 INFO L471 AbstractCegarLoop]: Abstraction has 4557 states and 7156 transitions. [2024-10-12 19:54:14,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 7156 transitions. [2024-10-12 19:54:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-12 19:54:14,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:14,751 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:14,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 19:54:14,751 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:14,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1290224443, now seen corresponding path program 1 times [2024-10-12 19:54:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:14,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658331499] [2024-10-12 19:54:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:14,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:14,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:14,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658331499] [2024-10-12 19:54:14,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658331499] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:14,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:14,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 19:54:14,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672660429] [2024-10-12 19:54:14,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:14,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 19:54:14,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 19:54:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:14,833 INFO L87 Difference]: Start difference. First operand 4557 states and 7156 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:15,317 INFO L93 Difference]: Finished difference Result 13178 states and 20681 transitions. [2024-10-12 19:54:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 19:54:15,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-12 19:54:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:15,336 INFO L225 Difference]: With dead ends: 13178 [2024-10-12 19:54:15,336 INFO L226 Difference]: Without dead ends: 8823 [2024-10-12 19:54:15,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:54:15,346 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 912 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:15,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 2224 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:54:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8823 states. [2024-10-12 19:54:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8823 to 6101. [2024-10-12 19:54:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6101 states, 6095 states have (on average 1.5689909762100083) internal successors, (9563), 6099 states have internal predecessors, (9563), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6101 states to 6101 states and 9568 transitions. [2024-10-12 19:54:15,568 INFO L78 Accepts]: Start accepts. Automaton has 6101 states and 9568 transitions. Word has length 63 [2024-10-12 19:54:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:15,569 INFO L471 AbstractCegarLoop]: Abstraction has 6101 states and 9568 transitions. [2024-10-12 19:54:15,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6101 states and 9568 transitions. [2024-10-12 19:54:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-12 19:54:15,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:15,571 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:15,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 19:54:15,571 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:15,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:15,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1825512345, now seen corresponding path program 1 times [2024-10-12 19:54:15,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:15,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641525465] [2024-10-12 19:54:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:15,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641525465] [2024-10-12 19:54:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641525465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:15,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:15,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 19:54:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186035119] [2024-10-12 19:54:15,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:15,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:54:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:54:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 19:54:15,659 INFO L87 Difference]: Start difference. First operand 6101 states and 9568 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:16,078 INFO L93 Difference]: Finished difference Result 14584 states and 22709 transitions. [2024-10-12 19:54:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 19:54:16,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-12 19:54:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:16,096 INFO L225 Difference]: With dead ends: 14584 [2024-10-12 19:54:16,097 INFO L226 Difference]: Without dead ends: 8685 [2024-10-12 19:54:16,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:54:16,106 INFO L432 NwaCegarLoop]: 508 mSDtfsCounter, 795 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:16,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2769 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8685 states. [2024-10-12 19:54:16,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8685 to 6441. [2024-10-12 19:54:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 6435 states have (on average 1.5575757575757576) internal successors, (10023), 6439 states have internal predecessors, (10023), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 10028 transitions. [2024-10-12 19:54:16,336 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 10028 transitions. Word has length 64 [2024-10-12 19:54:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:16,336 INFO L471 AbstractCegarLoop]: Abstraction has 6441 states and 10028 transitions. [2024-10-12 19:54:16,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 10028 transitions. [2024-10-12 19:54:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 19:54:16,341 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:16,341 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] [2024-10-12 19:54:16,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 19:54:16,341 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:16,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:16,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1457483404, now seen corresponding path program 1 times [2024-10-12 19:54:16,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:16,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003416843] [2024-10-12 19:54:16,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:16,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:16,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003416843] [2024-10-12 19:54:16,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003416843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:16,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:16,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:54:16,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099819757] [2024-10-12 19:54:16,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:16,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:16,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:16,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:16,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:16,367 INFO L87 Difference]: Start difference. First operand 6441 states and 10028 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:16,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:16,621 INFO L93 Difference]: Finished difference Result 13693 states and 21286 transitions. [2024-10-12 19:54:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:16,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-12 19:54:16,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:16,637 INFO L225 Difference]: With dead ends: 13693 [2024-10-12 19:54:16,637 INFO L226 Difference]: Without dead ends: 7272 [2024-10-12 19:54:16,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:16,647 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:16,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 756 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:16,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2024-10-12 19:54:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7186. [2024-10-12 19:54:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7186 states, 7180 states have (on average 1.5532033426183844) internal successors, (11152), 7184 states have internal predecessors, (11152), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7186 states to 7186 states and 11157 transitions. [2024-10-12 19:54:16,889 INFO L78 Accepts]: Start accepts. Automaton has 7186 states and 11157 transitions. Word has length 74 [2024-10-12 19:54:16,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:16,889 INFO L471 AbstractCegarLoop]: Abstraction has 7186 states and 11157 transitions. [2024-10-12 19:54:16,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:16,889 INFO L276 IsEmpty]: Start isEmpty. Operand 7186 states and 11157 transitions. [2024-10-12 19:54:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 19:54:16,891 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:16,891 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:16,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 19:54:16,891 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:16,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 413275915, now seen corresponding path program 1 times [2024-10-12 19:54:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:16,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714436548] [2024-10-12 19:54:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:16,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:16,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:16,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714436548] [2024-10-12 19:54:16,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714436548] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:16,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:16,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 19:54:16,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248949753] [2024-10-12 19:54:16,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:16,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:54:16,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:16,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:54:16,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 19:54:16,926 INFO L87 Difference]: Start difference. First operand 7186 states and 11157 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:17,425 INFO L93 Difference]: Finished difference Result 18675 states and 28730 transitions. [2024-10-12 19:54:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:54:17,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-12 19:54:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:17,474 INFO L225 Difference]: With dead ends: 18675 [2024-10-12 19:54:17,475 INFO L226 Difference]: Without dead ends: 11376 [2024-10-12 19:54:17,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:54:17,498 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 616 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:17,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1155 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:54:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2024-10-12 19:54:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 9903. [2024-10-12 19:54:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9903 states, 9897 states have (on average 1.5124785288471254) internal successors, (14969), 9901 states have internal predecessors, (14969), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9903 states to 9903 states and 14974 transitions. [2024-10-12 19:54:17,970 INFO L78 Accepts]: Start accepts. Automaton has 9903 states and 14974 transitions. Word has length 85 [2024-10-12 19:54:17,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:17,971 INFO L471 AbstractCegarLoop]: Abstraction has 9903 states and 14974 transitions. [2024-10-12 19:54:17,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 9903 states and 14974 transitions. [2024-10-12 19:54:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 19:54:17,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:17,973 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-10-12 19:54:17,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 19:54:17,973 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:17,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1210850493, now seen corresponding path program 1 times [2024-10-12 19:54:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:17,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285994529] [2024-10-12 19:54:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:18,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:18,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285994529] [2024-10-12 19:54:18,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285994529] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:18,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:18,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:18,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059911303] [2024-10-12 19:54:18,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:18,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:18,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:18,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:18,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:18,007 INFO L87 Difference]: Start difference. First operand 9903 states and 14974 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:18,162 INFO L93 Difference]: Finished difference Result 14064 states and 21298 transitions. [2024-10-12 19:54:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:18,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-10-12 19:54:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:18,172 INFO L225 Difference]: With dead ends: 14064 [2024-10-12 19:54:18,173 INFO L226 Difference]: Without dead ends: 4171 [2024-10-12 19:54:18,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:18,183 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 331 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:18,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 473 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2024-10-12 19:54:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4113. [2024-10-12 19:54:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4107 states have (on average 1.4088142196250304) internal successors, (5786), 4111 states have internal predecessors, (5786), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5791 transitions. [2024-10-12 19:54:18,274 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5791 transitions. Word has length 91 [2024-10-12 19:54:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:18,275 INFO L471 AbstractCegarLoop]: Abstraction has 4113 states and 5791 transitions. [2024-10-12 19:54:18,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5791 transitions. [2024-10-12 19:54:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 19:54:18,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:18,276 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:18,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 19:54:18,276 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:18,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:18,276 INFO L85 PathProgramCache]: Analyzing trace with hash 183287898, now seen corresponding path program 1 times [2024-10-12 19:54:18,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:18,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886522769] [2024-10-12 19:54:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:18,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886522769] [2024-10-12 19:54:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886522769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:18,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 19:54:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192422003] [2024-10-12 19:54:18,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:18,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:54:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:18,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:54:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:54:18,319 INFO L87 Difference]: Start difference. First operand 4113 states and 5791 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:18,584 INFO L93 Difference]: Finished difference Result 9649 states and 13571 transitions. [2024-10-12 19:54:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 19:54:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-12 19:54:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:18,594 INFO L225 Difference]: With dead ends: 9649 [2024-10-12 19:54:18,594 INFO L226 Difference]: Without dead ends: 5700 [2024-10-12 19:54:18,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 19:54:18,600 INFO L432 NwaCegarLoop]: 651 mSDtfsCounter, 527 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:18,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2176 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:18,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2024-10-12 19:54:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 4115. [2024-10-12 19:54:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4115 states, 4109 states have (on average 1.4056948162569969) internal successors, (5776), 4113 states have internal predecessors, (5776), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4115 states to 4115 states and 5781 transitions. [2024-10-12 19:54:18,703 INFO L78 Accepts]: Start accepts. Automaton has 4115 states and 5781 transitions. Word has length 95 [2024-10-12 19:54:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:18,703 INFO L471 AbstractCegarLoop]: Abstraction has 4115 states and 5781 transitions. [2024-10-12 19:54:18,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4115 states and 5781 transitions. [2024-10-12 19:54:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-12 19:54:18,704 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:18,704 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:18,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 19:54:18,705 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:18,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash 27940885, now seen corresponding path program 1 times [2024-10-12 19:54:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:18,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126834148] [2024-10-12 19:54:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:18,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:18,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126834148] [2024-10-12 19:54:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126834148] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505057758] [2024-10-12 19:54:18,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:18,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:18,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:18,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:18,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 19:54:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:18,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 19:54:18,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:19,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:54:19,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:19,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505057758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:19,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:19,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 19:54:19,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283255450] [2024-10-12 19:54:19,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:19,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:19,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:19,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:19,016 INFO L87 Difference]: Start difference. First operand 4115 states and 5781 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:19,194 INFO L93 Difference]: Finished difference Result 5274 states and 7402 transitions. [2024-10-12 19:54:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:19,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-10-12 19:54:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:19,205 INFO L225 Difference]: With dead ends: 5274 [2024-10-12 19:54:19,205 INFO L226 Difference]: Without dead ends: 5270 [2024-10-12 19:54:19,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:19,207 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 227 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:19,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 743 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:19,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2024-10-12 19:54:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 5132. [2024-10-12 19:54:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 5126 states have (on average 1.4106515801794772) internal successors, (7231), 5130 states have internal predecessors, (7231), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 7236 transitions. [2024-10-12 19:54:19,364 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 7236 transitions. Word has length 97 [2024-10-12 19:54:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:19,365 INFO L471 AbstractCegarLoop]: Abstraction has 5132 states and 7236 transitions. [2024-10-12 19:54:19,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 7236 transitions. [2024-10-12 19:54:19,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-10-12 19:54:19,368 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:19,368 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:19,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 19:54:19,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 19:54:19,569 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:19,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash 615808692, now seen corresponding path program 1 times [2024-10-12 19:54:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:19,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891744988] [2024-10-12 19:54:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:19,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:54:19,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:19,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891744988] [2024-10-12 19:54:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891744988] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:19,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501176321] [2024-10-12 19:54:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:19,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:19,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:19,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:19,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 19:54:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:19,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 19:54:19,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:54:19,888 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:19,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501176321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:19,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:19,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 19:54:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387388069] [2024-10-12 19:54:19,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:19,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:19,891 INFO L87 Difference]: Start difference. First operand 5132 states and 7236 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:20,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:20,068 INFO L93 Difference]: Finished difference Result 9132 states and 12950 transitions. [2024-10-12 19:54:20,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:20,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2024-10-12 19:54:20,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:20,081 INFO L225 Difference]: With dead ends: 9132 [2024-10-12 19:54:20,081 INFO L226 Difference]: Without dead ends: 4011 [2024-10-12 19:54:20,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:20,087 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 257 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:20,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 392 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2024-10-12 19:54:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 3676. [2024-10-12 19:54:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3670 states have (on average 1.391825613079019) internal successors, (5108), 3674 states have internal predecessors, (5108), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:20,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5113 transitions. [2024-10-12 19:54:20,221 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5113 transitions. Word has length 151 [2024-10-12 19:54:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:20,222 INFO L471 AbstractCegarLoop]: Abstraction has 3676 states and 5113 transitions. [2024-10-12 19:54:20,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5113 transitions. [2024-10-12 19:54:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-10-12 19:54:20,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:20,224 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:20,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 19:54:20,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 19:54:20,429 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:20,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1118481984, now seen corresponding path program 1 times [2024-10-12 19:54:20,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:20,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565130028] [2024-10-12 19:54:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:20,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:54:20,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565130028] [2024-10-12 19:54:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565130028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236519616] [2024-10-12 19:54:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:20,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:20,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:20,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:20,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 19:54:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:20,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 19:54:20,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 19:54:20,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:20,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236519616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:20,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:20,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 19:54:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023433553] [2024-10-12 19:54:20,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:20,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:20,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:20,728 INFO L87 Difference]: Start difference. First operand 3676 states and 5113 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:20,893 INFO L93 Difference]: Finished difference Result 7189 states and 10048 transitions. [2024-10-12 19:54:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:20,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2024-10-12 19:54:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:20,902 INFO L225 Difference]: With dead ends: 7189 [2024-10-12 19:54:20,903 INFO L226 Difference]: Without dead ends: 3676 [2024-10-12 19:54:20,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:20,907 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 267 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:20,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 364 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2024-10-12 19:54:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3676. [2024-10-12 19:54:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3670 states have (on average 1.3536784741144414) internal successors, (4968), 3674 states have internal predecessors, (4968), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 4973 transitions. [2024-10-12 19:54:21,042 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 4973 transitions. Word has length 154 [2024-10-12 19:54:21,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:21,043 INFO L471 AbstractCegarLoop]: Abstraction has 3676 states and 4973 transitions. [2024-10-12 19:54:21,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 4973 transitions. [2024-10-12 19:54:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-12 19:54:21,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:21,045 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:21,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 19:54:21,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 19:54:21,246 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:21,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash 422364721, now seen corresponding path program 1 times [2024-10-12 19:54:21,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:21,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675171878] [2024-10-12 19:54:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:21,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:54:21,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675171878] [2024-10-12 19:54:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675171878] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853013452] [2024-10-12 19:54:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:21,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:21,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 19:54:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:21,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 19:54:21,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 19:54:21,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:21,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853013452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:21,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:21,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 19:54:21,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391910660] [2024-10-12 19:54:21,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:21,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:21,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:21,505 INFO L87 Difference]: Start difference. First operand 3676 states and 4973 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:21,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:21,916 INFO L93 Difference]: Finished difference Result 8510 states and 11697 transitions. [2024-10-12 19:54:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:21,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-10-12 19:54:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:21,941 INFO L225 Difference]: With dead ends: 8510 [2024-10-12 19:54:21,944 INFO L226 Difference]: Without dead ends: 4997 [2024-10-12 19:54:21,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:21,954 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 202 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:21,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 608 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:54:21,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2024-10-12 19:54:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 4661. [2024-10-12 19:54:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4661 states, 4655 states have (on average 1.319656283566058) internal successors, (6143), 4659 states have internal predecessors, (6143), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 6148 transitions. [2024-10-12 19:54:22,129 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 6148 transitions. Word has length 155 [2024-10-12 19:54:22,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:22,130 INFO L471 AbstractCegarLoop]: Abstraction has 4661 states and 6148 transitions. [2024-10-12 19:54:22,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:22,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 6148 transitions. [2024-10-12 19:54:22,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-12 19:54:22,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:22,132 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:22,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:22,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:22,332 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:22,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:22,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1110151312, now seen corresponding path program 1 times [2024-10-12 19:54:22,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:22,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126506160] [2024-10-12 19:54:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:22,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:54:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126506160] [2024-10-12 19:54:22,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126506160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480517183] [2024-10-12 19:54:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:22,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:22,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:22,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:22,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 19:54:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:22,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 19:54:22,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:54:22,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:54:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480517183] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:22,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:22,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-12 19:54:22,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283455958] [2024-10-12 19:54:22,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:22,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 19:54:22,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 19:54:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:54:22,869 INFO L87 Difference]: Start difference. First operand 4661 states and 6148 transitions. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:23,362 INFO L93 Difference]: Finished difference Result 13026 states and 17203 transitions. [2024-10-12 19:54:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 19:54:23,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-10-12 19:54:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:23,374 INFO L225 Difference]: With dead ends: 13026 [2024-10-12 19:54:23,374 INFO L226 Difference]: Without dead ends: 8528 [2024-10-12 19:54:23,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-12 19:54:23,381 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 882 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:23,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 3708 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:54:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8528 states. [2024-10-12 19:54:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8528 to 7261. [2024-10-12 19:54:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7261 states, 7255 states have (on average 1.3342522398345968) internal successors, (9680), 7259 states have internal predecessors, (9680), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7261 states to 7261 states and 9685 transitions. [2024-10-12 19:54:23,569 INFO L78 Accepts]: Start accepts. Automaton has 7261 states and 9685 transitions. Word has length 157 [2024-10-12 19:54:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:23,569 INFO L471 AbstractCegarLoop]: Abstraction has 7261 states and 9685 transitions. [2024-10-12 19:54:23,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 7261 states and 9685 transitions. [2024-10-12 19:54:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-10-12 19:54:23,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:23,572 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:23,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 19:54:23,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:23,776 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:23,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1001900481, now seen corresponding path program 1 times [2024-10-12 19:54:23,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:23,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212192081] [2024-10-12 19:54:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:23,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:54:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212192081] [2024-10-12 19:54:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212192081] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114787277] [2024-10-12 19:54:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:24,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:24,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 19:54:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:24,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 19:54:24,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:54:24,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:54:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114787277] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:24,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:24,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2024-10-12 19:54:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284028979] [2024-10-12 19:54:24,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:24,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 19:54:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 19:54:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:54:24,769 INFO L87 Difference]: Start difference. First operand 7261 states and 9685 transitions. Second operand has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:25,490 INFO L93 Difference]: Finished difference Result 18698 states and 24759 transitions. [2024-10-12 19:54:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 19:54:25,491 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2024-10-12 19:54:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:25,507 INFO L225 Difference]: With dead ends: 18698 [2024-10-12 19:54:25,508 INFO L226 Difference]: Without dead ends: 11600 [2024-10-12 19:54:25,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-10-12 19:54:25,515 INFO L432 NwaCegarLoop]: 985 mSDtfsCounter, 1482 mSDsluCounter, 7152 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 8137 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:25,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 8137 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:54:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11600 states. [2024-10-12 19:54:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11600 to 9520. [2024-10-12 19:54:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9520 states, 9514 states have (on average 1.3391843598906874) internal successors, (12741), 9518 states have internal predecessors, (12741), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9520 states to 9520 states and 12746 transitions. [2024-10-12 19:54:25,735 INFO L78 Accepts]: Start accepts. Automaton has 9520 states and 12746 transitions. Word has length 252 [2024-10-12 19:54:25,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:25,735 INFO L471 AbstractCegarLoop]: Abstraction has 9520 states and 12746 transitions. [2024-10-12 19:54:25,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 9520 states and 12746 transitions. [2024-10-12 19:54:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-12 19:54:25,739 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:25,739 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 19:54:25,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:25,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:25,944 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:25,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:25,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1331495454, now seen corresponding path program 1 times [2024-10-12 19:54:25,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:25,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595248588] [2024-10-12 19:54:25,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:25,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 436 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:54:26,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595248588] [2024-10-12 19:54:26,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595248588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439483781] [2024-10-12 19:54:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:26,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:26,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:26,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:26,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 19:54:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:26,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 19:54:26,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 436 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:54:26,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 436 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:54:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439483781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:27,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2024-10-12 19:54:27,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685775045] [2024-10-12 19:54:27,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:27,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 19:54:27,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:27,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 19:54:27,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:54:27,101 INFO L87 Difference]: Start difference. First operand 9520 states and 12746 transitions. Second operand has 13 states, 13 states have (on average 26.153846153846153) internal successors, (340), 13 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:28,029 INFO L93 Difference]: Finished difference Result 24033 states and 31856 transitions. [2024-10-12 19:54:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 19:54:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 26.153846153846153) internal successors, (340), 13 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2024-10-12 19:54:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:28,052 INFO L225 Difference]: With dead ends: 24033 [2024-10-12 19:54:28,053 INFO L226 Difference]: Without dead ends: 14676 [2024-10-12 19:54:28,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-10-12 19:54:28,064 INFO L432 NwaCegarLoop]: 1478 mSDtfsCounter, 2188 mSDsluCounter, 13629 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 15107 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:28,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2188 Valid, 15107 Invalid, 1301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 19:54:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14676 states. [2024-10-12 19:54:28,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14676 to 11781. [2024-10-12 19:54:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11781 states, 11775 states have (on average 1.3421656050955415) internal successors, (15804), 11779 states have internal predecessors, (15804), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11781 states to 11781 states and 15809 transitions. [2024-10-12 19:54:28,336 INFO L78 Accepts]: Start accepts. Automaton has 11781 states and 15809 transitions. Word has length 348 [2024-10-12 19:54:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:28,337 INFO L471 AbstractCegarLoop]: Abstraction has 11781 states and 15809 transitions. [2024-10-12 19:54:28,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 26.153846153846153) internal successors, (340), 13 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 11781 states and 15809 transitions. [2024-10-12 19:54:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-10-12 19:54:28,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:28,342 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-10-12 19:54:28,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 19:54:28,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:28,547 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:28,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 88554710, now seen corresponding path program 1 times [2024-10-12 19:54:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:28,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310722761] [2024-10-12 19:54:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:28,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 336 proven. 474 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:54:29,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:29,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310722761] [2024-10-12 19:54:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310722761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:29,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308231710] [2024-10-12 19:54:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:29,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:29,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:29,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:29,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 19:54:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:29,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-12 19:54:29,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 20 proven. 790 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:54:30,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 20 proven. 790 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:54:30,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308231710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:30,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:30,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2024-10-12 19:54:30,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816967200] [2024-10-12 19:54:30,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:30,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-12 19:54:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 19:54:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-10-12 19:54:30,780 INFO L87 Difference]: Start difference. First operand 11781 states and 15809 transitions. Second operand has 22 states, 22 states have (on average 32.72727272727273) internal successors, (720), 22 states have internal predecessors, (720), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:32,248 INFO L93 Difference]: Finished difference Result 29371 states and 38971 transitions. [2024-10-12 19:54:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-12 19:54:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 32.72727272727273) internal successors, (720), 22 states have internal predecessors, (720), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 445 [2024-10-12 19:54:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:32,283 INFO L225 Difference]: With dead ends: 29371 [2024-10-12 19:54:32,283 INFO L226 Difference]: Without dead ends: 17753 [2024-10-12 19:54:32,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=339, Invalid=2111, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 19:54:32,315 INFO L432 NwaCegarLoop]: 1977 mSDtfsCounter, 5840 mSDsluCounter, 21816 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5840 SdHoareTripleChecker+Valid, 23793 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:32,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5840 Valid, 23793 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 19:54:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17753 states. [2024-10-12 19:54:32,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17753 to 13894. [2024-10-12 19:54:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13894 states, 13888 states have (on average 1.345838133640553) internal successors, (18691), 13892 states have internal predecessors, (18691), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13894 states to 13894 states and 18696 transitions. [2024-10-12 19:54:32,853 INFO L78 Accepts]: Start accepts. Automaton has 13894 states and 18696 transitions. Word has length 445 [2024-10-12 19:54:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:32,858 INFO L471 AbstractCegarLoop]: Abstraction has 13894 states and 18696 transitions. [2024-10-12 19:54:32,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 32.72727272727273) internal successors, (720), 22 states have internal predecessors, (720), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 13894 states and 18696 transitions. [2024-10-12 19:54:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2024-10-12 19:54:32,865 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:32,865 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-10-12 19:54:32,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:33,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 19:54:33,067 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:33,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash 480598903, now seen corresponding path program 1 times [2024-10-12 19:54:33,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:33,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841566308] [2024-10-12 19:54:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:33,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2024-10-12 19:54:33,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:33,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841566308] [2024-10-12 19:54:33,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841566308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:33,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:33,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:33,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932097181] [2024-10-12 19:54:33,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:33,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:33,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:33,231 INFO L87 Difference]: Start difference. First operand 13894 states and 18696 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:33,385 INFO L93 Difference]: Finished difference Result 15840 states and 20954 transitions. [2024-10-12 19:54:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:33,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 544 [2024-10-12 19:54:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:33,392 INFO L225 Difference]: With dead ends: 15840 [2024-10-12 19:54:33,392 INFO L226 Difference]: Without dead ends: 2005 [2024-10-12 19:54:33,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:33,401 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 136 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:33,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 368 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:33,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2024-10-12 19:54:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1236. [2024-10-12 19:54:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1232 states have (on average 1.0771103896103895) internal successors, (1327), 1234 states have internal predecessors, (1327), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1330 transitions. [2024-10-12 19:54:33,442 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1330 transitions. Word has length 544 [2024-10-12 19:54:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:33,442 INFO L471 AbstractCegarLoop]: Abstraction has 1236 states and 1330 transitions. [2024-10-12 19:54:33,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1330 transitions. [2024-10-12 19:54:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-10-12 19:54:33,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:33,445 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-10-12 19:54:33,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 19:54:33,446 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:33,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1166626677, now seen corresponding path program 1 times [2024-10-12 19:54:33,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:33,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211367805] [2024-10-12 19:54:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:33,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2024-10-12 19:54:33,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211367805] [2024-10-12 19:54:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211367805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:33,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:33,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 19:54:33,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559155340] [2024-10-12 19:54:33,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:33,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:54:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:33,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:54:33,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 19:54:33,668 INFO L87 Difference]: Start difference. First operand 1236 states and 1330 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:33,796 INFO L93 Difference]: Finished difference Result 1626 states and 1778 transitions. [2024-10-12 19:54:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 19:54:33,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2024-10-12 19:54:33,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:33,802 INFO L225 Difference]: With dead ends: 1626 [2024-10-12 19:54:33,805 INFO L226 Difference]: Without dead ends: 1426 [2024-10-12 19:54:33,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:54:33,806 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 222 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:33,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1432 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:33,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2024-10-12 19:54:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1299. [2024-10-12 19:54:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1295 states have (on average 1.0787644787644788) internal successors, (1397), 1297 states have internal predecessors, (1397), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1400 transitions. [2024-10-12 19:54:33,847 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1400 transitions. Word has length 545 [2024-10-12 19:54:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:33,848 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 1400 transitions. [2024-10-12 19:54:33,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1400 transitions. [2024-10-12 19:54:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-10-12 19:54:33,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:33,852 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-10-12 19:54:33,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 19:54:33,852 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:33,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2006018401, now seen corresponding path program 1 times [2024-10-12 19:54:33,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:33,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573880623] [2024-10-12 19:54:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:33,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2024-10-12 19:54:34,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:34,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573880623] [2024-10-12 19:54:34,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573880623] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:34,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:34,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 19:54:34,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338466914] [2024-10-12 19:54:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:34,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:54:34,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:54:34,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:54:34,025 INFO L87 Difference]: Start difference. First operand 1299 states and 1400 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:34,104 INFO L93 Difference]: Finished difference Result 1488 states and 1610 transitions. [2024-10-12 19:54:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:54:34,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 546 [2024-10-12 19:54:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:34,110 INFO L225 Difference]: With dead ends: 1488 [2024-10-12 19:54:34,110 INFO L226 Difference]: Without dead ends: 1288 [2024-10-12 19:54:34,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 19:54:34,112 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 180 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:34,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 802 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:54:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2024-10-12 19:54:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1284. [2024-10-12 19:54:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1281 states have (on average 1.0671350507416082) internal successors, (1367), 1282 states have internal predecessors, (1367), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1369 transitions. [2024-10-12 19:54:34,154 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1369 transitions. Word has length 546 [2024-10-12 19:54:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:34,155 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1369 transitions. [2024-10-12 19:54:34,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1369 transitions. [2024-10-12 19:54:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2024-10-12 19:54:34,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:34,159 INFO L215 NwaCegarLoop]: trace histogram [12, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 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] [2024-10-12 19:54:34,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 19:54:34,159 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:34,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2046093584, now seen corresponding path program 1 times [2024-10-12 19:54:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:34,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899536983] [2024-10-12 19:54:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:34,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 120 proven. 320 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2024-10-12 19:54:34,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:34,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899536983] [2024-10-12 19:54:34,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899536983] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:34,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865318824] [2024-10-12 19:54:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:34,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:34,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:34,800 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:34,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 19:54:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:35,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 19:54:35,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 120 proven. 320 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2024-10-12 19:54:35,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 30 proven. 410 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2024-10-12 19:54:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865318824] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:36,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2024-10-12 19:54:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435358681] [2024-10-12 19:54:36,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:36,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 19:54:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 19:54:36,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2024-10-12 19:54:36,294 INFO L87 Difference]: Start difference. First operand 1284 states and 1369 transitions. Second operand has 26 states, 26 states have (on average 14.615384615384615) internal successors, (380), 26 states have internal predecessors, (380), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:36,713 INFO L93 Difference]: Finished difference Result 1408 states and 1497 transitions. [2024-10-12 19:54:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 19:54:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.615384615384615) internal successors, (380), 26 states have internal predecessors, (380), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 599 [2024-10-12 19:54:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:36,718 INFO L225 Difference]: With dead ends: 1408 [2024-10-12 19:54:36,718 INFO L226 Difference]: Without dead ends: 1405 [2024-10-12 19:54:36,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1191 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 19:54:36,720 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 735 mSDsluCounter, 5542 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 5908 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:36,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 5908 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:54:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2024-10-12 19:54:36,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1378. [2024-10-12 19:54:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1375 states have (on average 1.0654545454545454) internal successors, (1465), 1376 states have internal predecessors, (1465), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1467 transitions. [2024-10-12 19:54:36,766 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1467 transitions. Word has length 599 [2024-10-12 19:54:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:36,767 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1467 transitions. [2024-10-12 19:54:36,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.615384615384615) internal successors, (380), 26 states have internal predecessors, (380), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:36,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1467 transitions. [2024-10-12 19:54:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2024-10-12 19:54:36,770 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:36,771 INFO L215 NwaCegarLoop]: trace histogram [13, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:36,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 19:54:36,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-12 19:54:36,975 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:36,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:36,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1355803568, now seen corresponding path program 1 times [2024-10-12 19:54:36,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:36,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225029706] [2024-10-12 19:54:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:36,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 339 proven. 45 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2024-10-12 19:54:37,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225029706] [2024-10-12 19:54:37,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225029706] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300216794] [2024-10-12 19:54:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:37,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:37,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:37,419 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:37,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 19:54:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:37,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 19:54:37,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 339 proven. 45 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2024-10-12 19:54:37,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 339 proven. 45 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2024-10-12 19:54:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300216794] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:37,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:37,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-12 19:54:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780877106] [2024-10-12 19:54:37,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:37,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 19:54:37,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 19:54:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:54:37,892 INFO L87 Difference]: Start difference. First operand 1378 states and 1467 transitions. Second operand has 9 states, 9 states have (on average 29.77777777777778) internal successors, (268), 9 states have internal predecessors, (268), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:38,075 INFO L93 Difference]: Finished difference Result 1756 states and 1877 transitions. [2024-10-12 19:54:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 19:54:38,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.77777777777778) internal successors, (268), 9 states have internal predecessors, (268), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 646 [2024-10-12 19:54:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:38,081 INFO L225 Difference]: With dead ends: 1756 [2024-10-12 19:54:38,081 INFO L226 Difference]: Without dead ends: 1571 [2024-10-12 19:54:38,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1309 GetRequests, 1296 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:54:38,082 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 384 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:38,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2371 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2024-10-12 19:54:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1459. [2024-10-12 19:54:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1456 states have (on average 1.0652472527472527) internal successors, (1551), 1457 states have internal predecessors, (1551), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1553 transitions. [2024-10-12 19:54:38,128 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1553 transitions. Word has length 646 [2024-10-12 19:54:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:38,129 INFO L471 AbstractCegarLoop]: Abstraction has 1459 states and 1553 transitions. [2024-10-12 19:54:38,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.77777777777778) internal successors, (268), 9 states have internal predecessors, (268), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1553 transitions. [2024-10-12 19:54:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2024-10-12 19:54:38,134 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:38,135 INFO L215 NwaCegarLoop]: trace histogram [14, 10, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:38,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 19:54:38,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 19:54:38,340 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:38,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash 640406945, now seen corresponding path program 1 times [2024-10-12 19:54:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:38,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558972078] [2024-10-12 19:54:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:38,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 225 proven. 966 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-10-12 19:54:40,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:40,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558972078] [2024-10-12 19:54:40,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558972078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:40,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269776302] [2024-10-12 19:54:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:40,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:40,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:40,052 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:40,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 19:54:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:40,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-12 19:54:40,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 308 proven. 832 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2024-10-12 19:54:41,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 35 proven. 1105 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2024-10-12 19:54:41,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269776302] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:41,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:41,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 32 [2024-10-12 19:54:41,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722342034] [2024-10-12 19:54:41,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:41,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-12 19:54:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-12 19:54:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2024-10-12 19:54:41,929 INFO L87 Difference]: Start difference. First operand 1459 states and 1553 transitions. Second operand has 32 states, 32 states have (on average 20.9375) internal successors, (670), 32 states have internal predecessors, (670), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:42,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:42,490 INFO L93 Difference]: Finished difference Result 1583 states and 1681 transitions. [2024-10-12 19:54:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-12 19:54:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 20.9375) internal successors, (670), 32 states have internal predecessors, (670), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 701 [2024-10-12 19:54:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:42,496 INFO L225 Difference]: With dead ends: 1583 [2024-10-12 19:54:42,496 INFO L226 Difference]: Without dead ends: 1580 [2024-10-12 19:54:42,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1395 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 19:54:42,502 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 1012 mSDsluCounter, 9071 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 9630 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:42,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 9630 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:54:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2024-10-12 19:54:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1553. [2024-10-12 19:54:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1550 states have (on average 1.0638709677419356) internal successors, (1649), 1551 states have internal predecessors, (1649), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 1651 transitions. [2024-10-12 19:54:42,560 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 1651 transitions. Word has length 701 [2024-10-12 19:54:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:42,561 INFO L471 AbstractCegarLoop]: Abstraction has 1553 states and 1651 transitions. [2024-10-12 19:54:42,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 20.9375) internal successors, (670), 32 states have internal predecessors, (670), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:42,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 1651 transitions. [2024-10-12 19:54:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2024-10-12 19:54:42,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:42,567 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 19:54:42,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:42,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-12 19:54:42,771 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:42,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:42,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1173182687, now seen corresponding path program 1 times [2024-10-12 19:54:42,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:42,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233935222] [2024-10-12 19:54:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 35 proven. 1141 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2024-10-12 19:54:43,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233935222] [2024-10-12 19:54:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233935222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680123761] [2024-10-12 19:54:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:43,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:43,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:43,936 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:43,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 19:54:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:44,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 19:54:44,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 571 proven. 200 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2024-10-12 19:54:44,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 571 proven. 200 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2024-10-12 19:54:44,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680123761] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:44,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:44,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 11] total 23 [2024-10-12 19:54:44,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065863501] [2024-10-12 19:54:44,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:44,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-12 19:54:44,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-12 19:54:44,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2024-10-12 19:54:44,640 INFO L87 Difference]: Start difference. First operand 1553 states and 1651 transitions. Second operand has 23 states, 23 states have (on average 31.91304347826087) internal successors, (734), 23 states have internal predecessors, (734), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:45,961 INFO L93 Difference]: Finished difference Result 2055 states and 2191 transitions. [2024-10-12 19:54:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-12 19:54:45,962 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 31.91304347826087) internal successors, (734), 23 states have internal predecessors, (734), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 748 [2024-10-12 19:54:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:45,969 INFO L225 Difference]: With dead ends: 2055 [2024-10-12 19:54:45,969 INFO L226 Difference]: Without dead ends: 1870 [2024-10-12 19:54:45,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1586 GetRequests, 1514 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=538, Invalid=4864, Unknown=0, NotChecked=0, Total=5402 [2024-10-12 19:54:45,972 INFO L432 NwaCegarLoop]: 654 mSDtfsCounter, 1577 mSDsluCounter, 11643 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 12297 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:45,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 12297 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 19:54:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2024-10-12 19:54:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1730. [2024-10-12 19:54:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1727 states have (on average 1.0631152287203243) internal successors, (1836), 1728 states have internal predecessors, (1836), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 1838 transitions. [2024-10-12 19:54:46,039 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 1838 transitions. Word has length 748 [2024-10-12 19:54:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:46,039 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 1838 transitions. [2024-10-12 19:54:46,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 31.91304347826087) internal successors, (734), 23 states have internal predecessors, (734), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 1838 transitions. [2024-10-12 19:54:46,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2024-10-12 19:54:46,044 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:46,045 INFO L215 NwaCegarLoop]: trace histogram [16, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 19:54:46,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 19:54:46,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:46,249 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:46,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1989158495, now seen corresponding path program 1 times [2024-10-12 19:54:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182517733] [2024-10-12 19:54:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:46,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2098 backedges. 199 proven. 1655 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-10-12 19:54:47,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:47,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182517733] [2024-10-12 19:54:47,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182517733] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:47,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518019114] [2024-10-12 19:54:47,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:47,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:47,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:47,898 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:47,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 19:54:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:48,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-12 19:54:48,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2098 backedges. 407 proven. 1447 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-10-12 19:54:49,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2098 backedges. 40 proven. 1814 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-10-12 19:54:50,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518019114] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:50,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:50,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 36 [2024-10-12 19:54:50,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233002476] [2024-10-12 19:54:50,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:50,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-12 19:54:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:50,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-12 19:54:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1167, Unknown=0, NotChecked=0, Total=1260 [2024-10-12 19:54:50,354 INFO L87 Difference]: Start difference. First operand 1730 states and 1838 transitions. Second operand has 36 states, 36 states have (on average 26.305555555555557) internal successors, (947), 36 states have internal predecessors, (947), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:51,359 INFO L93 Difference]: Finished difference Result 1941 states and 2058 transitions. [2024-10-12 19:54:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-12 19:54:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 26.305555555555557) internal successors, (947), 36 states have internal predecessors, (947), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 804 [2024-10-12 19:54:51,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:51,364 INFO L225 Difference]: With dead ends: 1941 [2024-10-12 19:54:51,364 INFO L226 Difference]: Without dead ends: 1938 [2024-10-12 19:54:51,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1658 GetRequests, 1602 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=3041, Unknown=0, NotChecked=0, Total=3306 [2024-10-12 19:54:51,365 INFO L432 NwaCegarLoop]: 783 mSDtfsCounter, 1226 mSDsluCounter, 18699 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 19482 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:51,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 19482 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 19:54:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2024-10-12 19:54:51,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1907. [2024-10-12 19:54:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1904 states have (on average 1.0619747899159664) internal successors, (2022), 1905 states have internal predecessors, (2022), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2024 transitions. [2024-10-12 19:54:51,429 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2024 transitions. Word has length 804 [2024-10-12 19:54:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:51,430 INFO L471 AbstractCegarLoop]: Abstraction has 1907 states and 2024 transitions. [2024-10-12 19:54:51,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 26.305555555555557) internal successors, (947), 36 states have internal predecessors, (947), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2024 transitions. [2024-10-12 19:54:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2024-10-12 19:54:51,435 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:51,435 INFO L215 NwaCegarLoop]: trace histogram [17, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:51,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:51,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-10-12 19:54:51,640 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:51,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:51,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1745038433, now seen corresponding path program 1 times [2024-10-12 19:54:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:51,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844695094] [2024-10-12 19:54:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:51,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2347 backedges. 40 proven. 1634 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2024-10-12 19:54:52,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844695094] [2024-10-12 19:54:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844695094] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680030554] [2024-10-12 19:54:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:52,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:52,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:52,906 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:52,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 19:54:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:53,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 2335 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 19:54:53,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2347 backedges. 803 proven. 466 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2024-10-12 19:54:53,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2347 backedges. 803 proven. 466 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2024-10-12 19:54:53,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680030554] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:53,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:53,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13, 13] total 25 [2024-10-12 19:54:53,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670878286] [2024-10-12 19:54:53,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:53,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 19:54:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 19:54:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2024-10-12 19:54:53,739 INFO L87 Difference]: Start difference. First operand 1907 states and 2024 transitions. Second operand has 25 states, 25 states have (on average 33.4) internal successors, (835), 25 states have internal predecessors, (835), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:55,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:55,415 INFO L93 Difference]: Finished difference Result 2576 states and 2742 transitions. [2024-10-12 19:54:55,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-12 19:54:55,416 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 33.4) internal successors, (835), 25 states have internal predecessors, (835), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 851 [2024-10-12 19:54:55,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:55,422 INFO L225 Difference]: With dead ends: 2576 [2024-10-12 19:54:55,422 INFO L226 Difference]: Without dead ends: 2214 [2024-10-12 19:54:55,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1801 GetRequests, 1721 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=572, Invalid=6070, Unknown=0, NotChecked=0, Total=6642 [2024-10-12 19:54:55,425 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 1879 mSDsluCounter, 16571 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 17424 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:55,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 17424 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 19:54:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2024-10-12 19:54:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2086. [2024-10-12 19:54:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2083 states have (on average 1.0614498319731156) internal successors, (2211), 2084 states have internal predecessors, (2211), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2213 transitions. [2024-10-12 19:54:55,499 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2213 transitions. Word has length 851 [2024-10-12 19:54:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:55,499 INFO L471 AbstractCegarLoop]: Abstraction has 2086 states and 2213 transitions. [2024-10-12 19:54:55,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 33.4) internal successors, (835), 25 states have internal predecessors, (835), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:54:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2213 transitions. [2024-10-12 19:54:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2024-10-12 19:54:55,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:55,505 INFO L215 NwaCegarLoop]: trace histogram [18, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 19:54:55,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:55,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:55,706 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:55,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash -320780683, now seen corresponding path program 1 times [2024-10-12 19:54:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710761464] [2024-10-12 19:54:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2662 backedges. 608 proven. 1897 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-12 19:54:57,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:57,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710761464] [2024-10-12 19:54:57,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710761464] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:57,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400622733] [2024-10-12 19:54:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:57,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:57,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:57,556 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:54:57,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 19:54:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:57,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-12 19:54:57,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2662 backedges. 414 proven. 2162 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-12 19:54:59,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:55:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2662 backedges. 45 proven. 2531 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-10-12 19:55:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400622733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:55:00,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:55:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 28, 28] total 64 [2024-10-12 19:55:00,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750864169] [2024-10-12 19:55:00,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:55:00,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-10-12 19:55:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:55:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-10-12 19:55:00,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3877, Unknown=0, NotChecked=0, Total=4032 [2024-10-12 19:55:00,594 INFO L87 Difference]: Start difference. First operand 2086 states and 2213 transitions. Second operand has 64 states, 64 states have (on average 28.484375) internal successors, (1823), 64 states have internal predecessors, (1823), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:55:05,599 INFO L93 Difference]: Finished difference Result 2238 states and 2367 transitions. [2024-10-12 19:55:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-10-12 19:55:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 28.484375) internal successors, (1823), 64 states have internal predecessors, (1823), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 908 [2024-10-12 19:55:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:55:05,606 INFO L225 Difference]: With dead ends: 2238 [2024-10-12 19:55:05,606 INFO L226 Difference]: Without dead ends: 2235 [2024-10-12 19:55:05,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1977 GetRequests, 1827 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5030 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1188, Invalid=21764, Unknown=0, NotChecked=0, Total=22952 [2024-10-12 19:55:05,611 INFO L432 NwaCegarLoop]: 1041 mSDtfsCounter, 4274 mSDsluCounter, 48714 mSDsCounter, 0 mSdLazyCounter, 6687 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4274 SdHoareTripleChecker+Valid, 49755 SdHoareTripleChecker+Invalid, 6740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 6687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:55:05,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4274 Valid, 49755 Invalid, 6740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 6687 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 19:55:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2024-10-12 19:55:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2180. [2024-10-12 19:55:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 2177 states have (on average 1.0606338998621956) internal successors, (2309), 2178 states have internal predecessors, (2309), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2311 transitions. [2024-10-12 19:55:05,692 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2311 transitions. Word has length 908 [2024-10-12 19:55:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:55:05,692 INFO L471 AbstractCegarLoop]: Abstraction has 2180 states and 2311 transitions. [2024-10-12 19:55:05,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 28.484375) internal successors, (1823), 64 states have internal predecessors, (1823), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2311 transitions. [2024-10-12 19:55:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2024-10-12 19:55:05,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:55:05,699 INFO L215 NwaCegarLoop]: trace histogram [19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-10-12 19:55:05,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 19:55:05,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:55:05,903 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:55:05,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:55:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1254623861, now seen corresponding path program 1 times [2024-10-12 19:55:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:55:05,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980851919] [2024-10-12 19:55:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:55:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:55:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:55:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 1035 proven. 844 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2024-10-12 19:55:06,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:55:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980851919] [2024-10-12 19:55:06,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980851919] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:55:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187948559] [2024-10-12 19:55:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:55:06,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:55:06,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:55:06,747 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:55:06,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 19:55:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:55:07,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-12 19:55:07,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:55:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 1035 proven. 844 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2024-10-12 19:55:07,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:55:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 1035 proven. 844 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2024-10-12 19:55:07,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187948559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:55:07,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:55:07,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2024-10-12 19:55:07,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783890776] [2024-10-12 19:55:07,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:55:07,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 19:55:07,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:55:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 19:55:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:55:07,721 INFO L87 Difference]: Start difference. First operand 2180 states and 2311 transitions. Second operand has 15 states, 15 states have (on average 38.06666666666667) internal successors, (571), 15 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:08,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:55:08,264 INFO L93 Difference]: Finished difference Result 3221 states and 3423 transitions. [2024-10-12 19:55:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 19:55:08,265 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 38.06666666666667) internal successors, (571), 15 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 955 [2024-10-12 19:55:08,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:55:08,270 INFO L225 Difference]: With dead ends: 3221 [2024-10-12 19:55:08,271 INFO L226 Difference]: Without dead ends: 2586 [2024-10-12 19:55:08,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1948 GetRequests, 1923 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2024-10-12 19:55:08,272 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 924 mSDsluCounter, 9720 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 10576 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:55:08,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 10576 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:55:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2024-10-12 19:55:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2446. [2024-10-12 19:55:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 2443 states have (on average 1.0597625869832175) internal successors, (2589), 2444 states have internal predecessors, (2589), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 2591 transitions. [2024-10-12 19:55:08,359 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 2591 transitions. Word has length 955 [2024-10-12 19:55:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:55:08,360 INFO L471 AbstractCegarLoop]: Abstraction has 2446 states and 2591 transitions. [2024-10-12 19:55:08,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.06666666666667) internal successors, (571), 15 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 2591 transitions. [2024-10-12 19:55:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2024-10-12 19:55:08,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:55:08,366 INFO L215 NwaCegarLoop]: trace histogram [20, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:55:08,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 19:55:08,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-12 19:55:08,571 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:55:08,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:55:08,572 INFO L85 PathProgramCache]: Analyzing trace with hash 114041232, now seen corresponding path program 1 times [2024-10-12 19:55:08,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:55:08,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708406402] [2024-10-12 19:55:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:55:08,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:55:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:55:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 311 proven. 2842 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-10-12 19:55:11,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:55:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708406402] [2024-10-12 19:55:11,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708406402] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:55:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327258798] [2024-10-12 19:55:11,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:55:11,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:55:11,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:55:11,028 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:55:11,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 19:55:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:55:11,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-10-12 19:55:11,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:55:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 329 proven. 2976 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-12 19:55:13,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:55:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 50 proven. 3255 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-12 19:55:14,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327258798] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:55:14,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:55:14,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 32, 32] total 77 [2024-10-12 19:55:14,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846103338] [2024-10-12 19:55:14,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:55:14,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-10-12 19:55:14,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:55:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-10-12 19:55:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=5612, Unknown=0, NotChecked=0, Total=5852 [2024-10-12 19:55:14,755 INFO L87 Difference]: Start difference. First operand 2446 states and 2591 transitions. Second operand has 77 states, 77 states have (on average 28.285714285714285) internal successors, (2178), 77 states have internal predecessors, (2178), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:55:20,454 INFO L93 Difference]: Finished difference Result 4513 states and 4779 transitions. [2024-10-12 19:55:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-10-12 19:55:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 28.285714285714285) internal successors, (2178), 77 states have internal predecessors, (2178), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1013 [2024-10-12 19:55:20,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:55:20,464 INFO L225 Difference]: With dead ends: 4513 [2024-10-12 19:55:20,464 INFO L226 Difference]: Without dead ends: 4510 [2024-10-12 19:55:20,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2188 GetRequests, 2007 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9132 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1891, Invalid=31415, Unknown=0, NotChecked=0, Total=33306 [2024-10-12 19:55:20,471 INFO L432 NwaCegarLoop]: 1288 mSDtfsCounter, 6357 mSDsluCounter, 62595 mSDsCounter, 0 mSdLazyCounter, 8051 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6357 SdHoareTripleChecker+Valid, 63883 SdHoareTripleChecker+Invalid, 8151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 8051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:55:20,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6357 Valid, 63883 Invalid, 8151 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 8051 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 19:55:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2024-10-12 19:55:20,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4043. [2024-10-12 19:55:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 4040 states have (on average 1.0596534653465346) internal successors, (4281), 4041 states have internal predecessors, (4281), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 4283 transitions. [2024-10-12 19:55:20,678 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 4283 transitions. Word has length 1013 [2024-10-12 19:55:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:55:20,679 INFO L471 AbstractCegarLoop]: Abstraction has 4043 states and 4283 transitions. [2024-10-12 19:55:20,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 28.285714285714285) internal successors, (2178), 77 states have internal predecessors, (2178), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 4283 transitions. [2024-10-12 19:55:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2024-10-12 19:55:20,687 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:55:20,688 INFO L215 NwaCegarLoop]: trace histogram [21, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-10-12 19:55:20,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-12 19:55:20,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:55:20,892 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:55:20,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:55:20,893 INFO L85 PathProgramCache]: Analyzing trace with hash -488190704, now seen corresponding path program 1 times [2024-10-12 19:55:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:55:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756262842] [2024-10-12 19:55:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:55:20,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:55:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:55:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3688 backedges. 588 proven. 2468 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2024-10-12 19:55:22,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:55:22,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756262842] [2024-10-12 19:55:22,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756262842] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:55:22,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673457386] [2024-10-12 19:55:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:55:22,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:55:22,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:55:22,622 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 19:55:22,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 19:55:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:55:23,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 19:55:23,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:55:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3688 backedges. 2602 proven. 0 refuted. 0 times theorem prover too weak. 1086 trivial. 0 not checked. [2024-10-12 19:55:23,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:55:23,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673457386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:55:23,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:55:23,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [24] total 27 [2024-10-12 19:55:23,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370656128] [2024-10-12 19:55:23,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:55:23,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 19:55:23,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:55:23,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 19:55:23,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2024-10-12 19:55:23,394 INFO L87 Difference]: Start difference. First operand 4043 states and 4283 transitions. Second operand has 13 states, 13 states have (on average 51.84615384615385) internal successors, (674), 13 states have internal predecessors, (674), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:55:23,814 INFO L93 Difference]: Finished difference Result 4158 states and 4402 transitions. [2024-10-12 19:55:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 19:55:23,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 51.84615384615385) internal successors, (674), 13 states have internal predecessors, (674), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1060 [2024-10-12 19:55:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:55:23,821 INFO L225 Difference]: With dead ends: 4158 [2024-10-12 19:55:23,822 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 19:55:23,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 1073 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 19:55:23,827 INFO L432 NwaCegarLoop]: 893 mSDtfsCounter, 931 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 4323 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:55:23,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 4323 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:55:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 19:55:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 19:55:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 19:55:23,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1060 [2024-10-12 19:55:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:55:23,834 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 19:55:23,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 51.84615384615385) internal successors, (674), 13 states have internal predecessors, (674), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 19:55:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 19:55:23,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 19:55:23,837 INFO L782 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 19:55:23,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-12 19:55:24,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:55:24,045 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:55:24,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 19:55:30,925 WARN L286 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 484 DAG size of output: 376 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)