./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.3.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.3.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 16b89964825dc5b7831662ee1568f8465e0e5c35795cab8e4e81d90352bde374 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 19:53:51,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 19:53:51,547 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 19:53:51,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 19:53:51,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 19:53:51,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 19:53:51,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 19:53:51,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 19:53:51,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 19:53:51,592 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 19:53:51,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 19:53:51,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 19:53:51,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 19:53:51,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 19:53:51,596 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 19:53:51,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 19:53:51,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 19:53:51,596 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 19:53:51,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 19:53:51,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 19:53:51,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 19:53:51,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 19:53:51,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 19:53:51,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 19:53:51,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 19:53:51,602 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 19:53:51,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 19:53:51,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 19:53:51,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 19:53:51,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 19:53:51,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 19:53:51,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 19:53:51,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:53:51,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 19:53:51,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 19:53:51,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 19:53:51,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 19:53:51,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 19:53:51,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 19:53:51,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 19:53:51,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 19:53:51,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 19:53:51,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b89964825dc5b7831662ee1568f8465e0e5c35795cab8e4e81d90352bde374 [2024-10-12 19:53:51,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 19:53:51,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 19:53:51,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 19:53:51,905 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 19:53:51,906 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 19:53:51,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c [2024-10-12 19:53:53,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 19:53:53,624 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 19:53:53,628 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c [2024-10-12 19:53:53,651 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8b07aaa4/e8ca70ddbfa84f2c952a6eda7f8ed510/FLAG9c180a65c [2024-10-12 19:53:53,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8b07aaa4/e8ca70ddbfa84f2c952a6eda7f8ed510 [2024-10-12 19:53:53,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 19:53:53,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 19:53:53,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 19:53:53,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 19:53:53,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 19:53:53,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:53:53" (1/1) ... [2024-10-12 19:53:53,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2304a1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:53, skipping insertion in model container [2024-10-12 19:53:53,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:53:53" (1/1) ... [2024-10-12 19:53:53,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 19:53:53,915 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.3.cil.c[646,659] [2024-10-12 19:53:54,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:53:54,021 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 19:53:54,031 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.3.cil.c[646,659] [2024-10-12 19:53:54,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:53:54,116 INFO L204 MainTranslator]: Completed translation [2024-10-12 19:53:54,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54 WrapperNode [2024-10-12 19:53:54,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 19:53:54,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 19:53:54,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 19:53:54,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 19:53:54,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,176 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 857 [2024-10-12 19:53:54,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 19:53:54,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 19:53:54,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 19:53:54,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 19:53:54,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,211 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 19:53:54,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,237 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 19:53:54,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 19:53:54,252 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 19:53:54,252 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 19:53:54,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (1/1) ... [2024-10-12 19:53:54,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:53:54,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:53:54,288 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 19:53:54,291 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 19:53:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 19:53:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 19:53:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-12 19:53:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-12 19:53:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 19:53:54,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 19:53:54,452 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 19:53:54,454 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 19:53:55,191 INFO L? ?]: Removed 90 outVars from TransFormulas that were not future-live. [2024-10-12 19:53:55,196 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 19:53:55,280 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 19:53:55,280 INFO L314 CfgBuilder]: Removed 13 assume(true) statements. [2024-10-12 19:53:55,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:53:55 BoogieIcfgContainer [2024-10-12 19:53:55,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 19:53:55,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 19:53:55,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 19:53:55,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 19:53:55,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:53:53" (1/3) ... [2024-10-12 19:53:55,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753f4bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:53:55, skipping insertion in model container [2024-10-12 19:53:55,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:53:54" (2/3) ... [2024-10-12 19:53:55,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753f4bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:53:55, skipping insertion in model container [2024-10-12 19:53:55,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:53:55" (3/3) ... [2024-10-12 19:53:55,304 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.3.cil.c [2024-10-12 19:53:55,320 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 19:53:55,320 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 19:53:55,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 19:53:55,408 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;@56ed925c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 19:53:55,408 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 19:53:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 243 states have (on average 1.9382716049382716) internal successors, (471), 249 states have internal predecessors, (471), 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 19:53:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-12 19:53:55,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:53:55,424 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 19:53:55,425 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:53:55,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:53:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash -496552046, now seen corresponding path program 1 times [2024-10-12 19:53:55,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:53:55,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368231559] [2024-10-12 19:53:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:53:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:53:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:53:55,718 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 19:53:55,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:53:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368231559] [2024-10-12 19:53:55,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368231559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:53:55,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:53:55,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:53:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134812128] [2024-10-12 19:53:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:53:55,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:53:55,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:53:55,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:53:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:53:55,757 INFO L87 Difference]: Start difference. First operand has 251 states, 243 states have (on average 1.9382716049382716) internal successors, (471), 249 states have internal predecessors, (471), 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 19:53:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:53:56,170 INFO L93 Difference]: Finished difference Result 662 states and 1267 transitions. [2024-10-12 19:53:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:53:56,172 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 19:53:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:53:56,182 INFO L225 Difference]: With dead ends: 662 [2024-10-12 19:53:56,182 INFO L226 Difference]: Without dead ends: 411 [2024-10-12 19:53:56,186 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 19:53:56,188 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 247 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:53:56,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 702 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:53:56,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-10-12 19:53:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 404. [2024-10-12 19:53:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 398 states have (on average 1.6407035175879396) internal successors, (653), 402 states have internal predecessors, (653), 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 19:53:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 658 transitions. [2024-10-12 19:53:56,243 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 658 transitions. Word has length 26 [2024-10-12 19:53:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:53:56,243 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 658 transitions. [2024-10-12 19:53:56,243 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 19:53:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 658 transitions. [2024-10-12 19:53:56,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 19:53:56,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:53:56,246 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] [2024-10-12 19:53:56,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 19:53:56,247 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:53:56,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:53:56,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1406671528, now seen corresponding path program 1 times [2024-10-12 19:53:56,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:53:56,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090190822] [2024-10-12 19:53:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:53:56,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:53:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:53:56,329 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 19:53:56,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:53:56,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090190822] [2024-10-12 19:53:56,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090190822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:53:56,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:53:56,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:53:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096086996] [2024-10-12 19:53:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:53:56,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:53:56,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:53:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:53:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:53:56,335 INFO L87 Difference]: Start difference. First operand 404 states and 658 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 19:53:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:53:56,487 INFO L93 Difference]: Finished difference Result 1060 states and 1752 transitions. [2024-10-12 19:53:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:53:56,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 37 [2024-10-12 19:53:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:53:56,492 INFO L225 Difference]: With dead ends: 1060 [2024-10-12 19:53:56,492 INFO L226 Difference]: Without dead ends: 669 [2024-10-12 19:53:56,494 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 19:53:56,495 INFO L432 NwaCegarLoop]: 588 mSDtfsCounter, 312 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 932 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 19:53:56,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 932 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:53:56,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-12 19:53:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 662. [2024-10-12 19:53:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 656 states have (on average 1.6722560975609757) internal successors, (1097), 660 states have internal predecessors, (1097), 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 19:53:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1102 transitions. [2024-10-12 19:53:56,543 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1102 transitions. Word has length 37 [2024-10-12 19:53:56,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:53:56,544 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1102 transitions. [2024-10-12 19:53:56,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 19:53:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1102 transitions. [2024-10-12 19:53:56,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-12 19:53:56,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:53:56,547 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] [2024-10-12 19:53:56,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 19:53:56,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:53:56,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:53:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -927320313, now seen corresponding path program 1 times [2024-10-12 19:53:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:53:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276712504] [2024-10-12 19:53:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:53:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:53:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:53:56,639 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 19:53:56,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:53:56,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276712504] [2024-10-12 19:53:56,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276712504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:53:56,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:53:56,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:53:56,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138192904] [2024-10-12 19:53:56,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:53:56,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:53:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:53:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:53:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:53:56,642 INFO L87 Difference]: Start difference. First operand 662 states and 1102 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 19:53:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:53:56,746 INFO L93 Difference]: Finished difference Result 1660 states and 2767 transitions. [2024-10-12 19:53:56,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:53:56,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 38 [2024-10-12 19:53:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:53:56,751 INFO L225 Difference]: With dead ends: 1660 [2024-10-12 19:53:56,751 INFO L226 Difference]: Without dead ends: 1022 [2024-10-12 19:53:56,752 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 19:53:56,754 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 336 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 738 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 19:53:56,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 738 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:53:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2024-10-12 19:53:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1011. [2024-10-12 19:53:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1005 states have (on average 1.6666666666666667) internal successors, (1675), 1009 states have internal predecessors, (1675), 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 19:53:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1680 transitions. [2024-10-12 19:53:56,786 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1680 transitions. Word has length 38 [2024-10-12 19:53:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:53:56,786 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1680 transitions. [2024-10-12 19:53:56,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 19:53:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1680 transitions. [2024-10-12 19:53:56,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-12 19:53:56,788 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:53:56,789 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 19:53:56,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 19:53:56,789 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:53:56,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:53:56,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1056862835, now seen corresponding path program 1 times [2024-10-12 19:53:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:53:56,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426997832] [2024-10-12 19:53:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:53:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:53:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:53:56,893 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 19:53:56,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:53:56,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426997832] [2024-10-12 19:53:56,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426997832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:53:56,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:53:56,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:53:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738465275] [2024-10-12 19:53:56,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:53:56,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:53:56,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:53:56,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:53:56,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 19:53:56,897 INFO L87 Difference]: Start difference. First operand 1011 states and 1680 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 19:53:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:53:57,432 INFO L93 Difference]: Finished difference Result 3578 states and 5964 transitions. [2024-10-12 19:53:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:53:57,433 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 19:53:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:53:57,443 INFO L225 Difference]: With dead ends: 3578 [2024-10-12 19:53:57,443 INFO L226 Difference]: Without dead ends: 2591 [2024-10-12 19:53:57,447 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 19:53:57,448 INFO L432 NwaCegarLoop]: 600 mSDtfsCounter, 1109 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1463 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 19:53:57,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1463 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:53:57,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2024-10-12 19:53:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2101. [2024-10-12 19:53:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 2095 states have (on average 1.6644391408114558) internal successors, (3487), 2099 states have internal predecessors, (3487), 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 19:53:57,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3492 transitions. [2024-10-12 19:53:57,547 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3492 transitions. Word has length 43 [2024-10-12 19:53:57,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:53:57,549 INFO L471 AbstractCegarLoop]: Abstraction has 2101 states and 3492 transitions. [2024-10-12 19:53:57,549 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 19:53:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3492 transitions. [2024-10-12 19:53:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 19:53:57,552 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:53:57,552 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 19:53:57,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 19:53:57,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:53:57,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:53:57,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2144538685, now seen corresponding path program 1 times [2024-10-12 19:53:57,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:53:57,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64895479] [2024-10-12 19:53:57,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:53:57,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:53:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:53:57,653 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 19:53:57,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:53:57,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64895479] [2024-10-12 19:53:57,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64895479] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:53:57,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:53:57,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:53:57,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319601920] [2024-10-12 19:53:57,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:53:57,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:53:57,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:53:57,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:53:57,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 19:53:57,655 INFO L87 Difference]: Start difference. First operand 2101 states and 3492 transitions. Second operand has 4 states, 4 states have (on average 12.25) 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 19:53:58,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:53:58,119 INFO L93 Difference]: Finished difference Result 6150 states and 10099 transitions. [2024-10-12 19:53:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:53:58,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) 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 19:53:58,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:53:58,135 INFO L225 Difference]: With dead ends: 6150 [2024-10-12 19:53:58,135 INFO L226 Difference]: Without dead ends: 4067 [2024-10-12 19:53:58,139 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 19:53:58,141 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 708 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:53:58,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 944 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:53:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2024-10-12 19:53:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3713. [2024-10-12 19:53:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3707 states have (on average 1.629349878608039) internal successors, (6040), 3711 states have internal predecessors, (6040), 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 19:53:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 6045 transitions. [2024-10-12 19:53:58,281 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 6045 transitions. Word has length 50 [2024-10-12 19:53:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:53:58,283 INFO L471 AbstractCegarLoop]: Abstraction has 3713 states and 6045 transitions. [2024-10-12 19:53:58,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) 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 19:53:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 6045 transitions. [2024-10-12 19:53:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-12 19:53:58,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:53:58,285 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 19:53:58,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 19:53:58,285 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:53:58,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:53:58,286 INFO L85 PathProgramCache]: Analyzing trace with hash 245452, now seen corresponding path program 1 times [2024-10-12 19:53:58,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:53:58,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703781008] [2024-10-12 19:53:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:53:58,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:53:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:53:58,326 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 19:53:58,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:53:58,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703781008] [2024-10-12 19:53:58,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703781008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:53:58,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:53:58,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:53:58,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630876283] [2024-10-12 19:53:58,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:53:58,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:53:58,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:53:58,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:53:58,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:53:58,330 INFO L87 Difference]: Start difference. First operand 3713 states and 6045 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 19:53:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:53:58,489 INFO L93 Difference]: Finished difference Result 8822 states and 14322 transitions. [2024-10-12 19:53:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:53:58,490 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 19:53:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:53:58,509 INFO L225 Difference]: With dead ends: 8822 [2024-10-12 19:53:58,509 INFO L226 Difference]: Without dead ends: 5131 [2024-10-12 19:53:58,515 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 19:53:58,516 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 351 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 641 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 19:53:58,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 641 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:53:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2024-10-12 19:53:58,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 4855. [2024-10-12 19:53:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 4849 states have (on average 1.6102289131779748) internal successors, (7808), 4853 states have internal predecessors, (7808), 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 19:53:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7813 transitions. [2024-10-12 19:53:58,754 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7813 transitions. Word has length 50 [2024-10-12 19:53:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:53:58,755 INFO L471 AbstractCegarLoop]: Abstraction has 4855 states and 7813 transitions. [2024-10-12 19:53:58,755 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 19:53:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7813 transitions. [2024-10-12 19:53:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 19:53:58,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:53:58,757 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] [2024-10-12 19:53:58,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 19:53:58,758 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:53:58,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:53:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1613361935, now seen corresponding path program 1 times [2024-10-12 19:53:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:53:58,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328737363] [2024-10-12 19:53:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:53:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:53:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:53:58,822 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 19:53:58,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:53:58,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328737363] [2024-10-12 19:53:58,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328737363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:53:58,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:53:58,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:53:58,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863317830] [2024-10-12 19:53:58,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:53:58,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:53:58,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:53:58,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:53:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:53:58,826 INFO L87 Difference]: Start difference. First operand 4855 states and 7813 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 19:53:59,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:53:59,249 INFO L93 Difference]: Finished difference Result 11739 states and 18977 transitions. [2024-10-12 19:53:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:53:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 56 [2024-10-12 19:53:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:53:59,276 INFO L225 Difference]: With dead ends: 11739 [2024-10-12 19:53:59,277 INFO L226 Difference]: Without dead ends: 6906 [2024-10-12 19:53:59,284 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 19:53:59,285 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 237 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 791 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 19:53:59,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 791 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:53:59,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2024-10-12 19:53:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 5615. [2024-10-12 19:53:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5609 states have (on average 1.5558923159208415) internal successors, (8727), 5613 states have internal predecessors, (8727), 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 19:53:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 8732 transitions. [2024-10-12 19:53:59,456 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 8732 transitions. Word has length 56 [2024-10-12 19:53:59,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:53:59,457 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 8732 transitions. [2024-10-12 19:53:59,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 19:53:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 8732 transitions. [2024-10-12 19:53:59,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-12 19:53:59,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:53:59,460 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 19:53:59,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 19:53:59,460 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:53:59,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:53:59,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2134058211, now seen corresponding path program 1 times [2024-10-12 19:53:59,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:53:59,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157641224] [2024-10-12 19:53:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:53:59,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:53:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:53:59,578 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 19:53:59,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:53:59,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157641224] [2024-10-12 19:53:59,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157641224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:53:59,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:53:59,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:53:59,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787376541] [2024-10-12 19:53:59,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:53:59,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:53:59,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:53:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:53:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:53:59,581 INFO L87 Difference]: Start difference. First operand 5615 states and 8732 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 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 19:53:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:53:59,768 INFO L93 Difference]: Finished difference Result 11074 states and 17242 transitions. [2024-10-12 19:53:59,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:53:59,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 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 19:53:59,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:53:59,789 INFO L225 Difference]: With dead ends: 11074 [2024-10-12 19:53:59,789 INFO L226 Difference]: Without dead ends: 5481 [2024-10-12 19:53:59,797 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 19:53:59,798 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 328 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:53:59,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 401 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:53:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2024-10-12 19:53:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2024-10-12 19:53:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5481 states, 5475 states have (on average 1.5360730593607306) internal successors, (8410), 5479 states have internal predecessors, (8410), 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 19:53:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 8415 transitions. [2024-10-12 19:54:00,002 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 8415 transitions. Word has length 58 [2024-10-12 19:54:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:00,003 INFO L471 AbstractCegarLoop]: Abstraction has 5481 states and 8415 transitions. [2024-10-12 19:54:00,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 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 19:54:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 8415 transitions. [2024-10-12 19:54:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 19:54:00,006 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:00,006 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] [2024-10-12 19:54:00,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 19:54:00,006 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:00,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:00,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1957123240, now seen corresponding path program 1 times [2024-10-12 19:54:00,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:00,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691368055] [2024-10-12 19:54:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:00,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:00,064 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 19:54:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:00,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691368055] [2024-10-12 19:54:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691368055] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:00,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:00,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073462580] [2024-10-12 19:54:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:00,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:00,067 INFO L87 Difference]: Start difference. First operand 5481 states and 8415 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 19:54:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:00,242 INFO L93 Difference]: Finished difference Result 10553 states and 16320 transitions. [2024-10-12 19:54:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:00,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 59 [2024-10-12 19:54:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:00,261 INFO L225 Difference]: With dead ends: 10553 [2024-10-12 19:54:00,265 INFO L226 Difference]: Without dead ends: 5094 [2024-10-12 19:54:00,275 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 19:54:00,279 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 145 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:00,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 831 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:54:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2024-10-12 19:54:00,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 4437. [2024-10-12 19:54:00,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 4431 states have (on average 1.5596930715414128) internal successors, (6911), 4435 states have internal predecessors, (6911), 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 19:54:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 6916 transitions. [2024-10-12 19:54:00,488 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 6916 transitions. Word has length 59 [2024-10-12 19:54:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:00,488 INFO L471 AbstractCegarLoop]: Abstraction has 4437 states and 6916 transitions. [2024-10-12 19:54:00,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 19:54:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 6916 transitions. [2024-10-12 19:54:00,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-12 19:54:00,490 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:00,490 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 19:54:00,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 19:54:00,491 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:00,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:00,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1486111498, now seen corresponding path program 1 times [2024-10-12 19:54:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895609617] [2024-10-12 19:54:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:00,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:00,601 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 19:54:00,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:00,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895609617] [2024-10-12 19:54:00,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895609617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:00,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:00,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 19:54:00,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243522362] [2024-10-12 19:54:00,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:00,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 19:54:00,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:00,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 19:54:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:00,603 INFO L87 Difference]: Start difference. First operand 4437 states and 6916 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 19:54:01,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:01,248 INFO L93 Difference]: Finished difference Result 12878 states and 20081 transitions. [2024-10-12 19:54:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 19:54:01,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 19:54:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:01,282 INFO L225 Difference]: With dead ends: 12878 [2024-10-12 19:54:01,283 INFO L226 Difference]: Without dead ends: 8643 [2024-10-12 19:54:01,289 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 19:54:01,290 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 900 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:01,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 2188 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:54:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8643 states. [2024-10-12 19:54:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8643 to 5981. [2024-10-12 19:54:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5981 states, 5975 states have (on average 1.5603347280334727) internal successors, (9323), 5979 states have internal predecessors, (9323), 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 19:54:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5981 states to 5981 states and 9328 transitions. [2024-10-12 19:54:01,476 INFO L78 Accepts]: Start accepts. Automaton has 5981 states and 9328 transitions. Word has length 61 [2024-10-12 19:54:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:01,476 INFO L471 AbstractCegarLoop]: Abstraction has 5981 states and 9328 transitions. [2024-10-12 19:54:01,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 19:54:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5981 states and 9328 transitions. [2024-10-12 19:54:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 19:54:01,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:01,478 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] [2024-10-12 19:54:01,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 19:54:01,479 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:01,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash -183177238, now seen corresponding path program 1 times [2024-10-12 19:54:01,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:01,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831262492] [2024-10-12 19:54:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:01,561 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 19:54:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831262492] [2024-10-12 19:54:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831262492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:01,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:01,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 19:54:01,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138651359] [2024-10-12 19:54:01,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:01,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:54:01,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:01,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:54:01,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 19:54:01,563 INFO L87 Difference]: Start difference. First operand 5981 states and 9328 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 19:54:01,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:01,982 INFO L93 Difference]: Finished difference Result 14344 states and 22229 transitions. [2024-10-12 19:54:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 19:54:01,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 62 [2024-10-12 19:54:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:02,002 INFO L225 Difference]: With dead ends: 14344 [2024-10-12 19:54:02,002 INFO L226 Difference]: Without dead ends: 8565 [2024-10-12 19:54:02,012 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 19:54:02,013 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 795 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:02,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2725 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:54:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8565 states. [2024-10-12 19:54:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8565 to 6321. [2024-10-12 19:54:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6321 states, 6315 states have (on average 1.54916864608076) internal successors, (9783), 6319 states have internal predecessors, (9783), 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 19:54:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6321 states to 6321 states and 9788 transitions. [2024-10-12 19:54:02,247 INFO L78 Accepts]: Start accepts. Automaton has 6321 states and 9788 transitions. Word has length 62 [2024-10-12 19:54:02,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:02,248 INFO L471 AbstractCegarLoop]: Abstraction has 6321 states and 9788 transitions. [2024-10-12 19:54:02,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 19:54:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand 6321 states and 9788 transitions. [2024-10-12 19:54:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-12 19:54:02,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:02,251 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 19:54:02,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 19:54:02,252 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:02,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:02,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1485200619, now seen corresponding path program 1 times [2024-10-12 19:54:02,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:02,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051155930] [2024-10-12 19:54:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:02,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:02,282 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 19:54:02,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:02,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051155930] [2024-10-12 19:54:02,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051155930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:02,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:02,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 19:54:02,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11321149] [2024-10-12 19:54:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:02,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:02,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:02,285 INFO L87 Difference]: Start difference. First operand 6321 states and 9788 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 19:54:02,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:02,567 INFO L93 Difference]: Finished difference Result 13413 states and 20726 transitions. [2024-10-12 19:54:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:02,568 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 19:54:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:02,586 INFO L225 Difference]: With dead ends: 13413 [2024-10-12 19:54:02,586 INFO L226 Difference]: Without dead ends: 7112 [2024-10-12 19:54:02,595 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 19:54:02,596 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 130 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 740 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 19:54:02,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 740 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7112 states. [2024-10-12 19:54:02,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7112 to 7026. [2024-10-12 19:54:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 7020 states have (on average 1.543019943019943) internal successors, (10832), 7024 states have internal predecessors, (10832), 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 19:54:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 10837 transitions. [2024-10-12 19:54:02,877 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 10837 transitions. Word has length 74 [2024-10-12 19:54:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:02,877 INFO L471 AbstractCegarLoop]: Abstraction has 7026 states and 10837 transitions. [2024-10-12 19:54:02,877 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 19:54:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 10837 transitions. [2024-10-12 19:54:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 19:54:02,880 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:02,880 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 19:54:02,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 19:54:02,881 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:02,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:02,881 INFO L85 PathProgramCache]: Analyzing trace with hash -851166086, now seen corresponding path program 1 times [2024-10-12 19:54:02,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:02,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969466344] [2024-10-12 19:54:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:02,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:02,950 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 19:54:02,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:02,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969466344] [2024-10-12 19:54:02,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969466344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:02,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:02,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 19:54:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190611365] [2024-10-12 19:54:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:02,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:54:02,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:54:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 19:54:02,953 INFO L87 Difference]: Start difference. First operand 7026 states and 10837 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 19:54:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:03,561 INFO L93 Difference]: Finished difference Result 18235 states and 27850 transitions. [2024-10-12 19:54:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:54:03,561 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 19:54:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:03,592 INFO L225 Difference]: With dead ends: 18235 [2024-10-12 19:54:03,592 INFO L226 Difference]: Without dead ends: 11096 [2024-10-12 19:54:03,602 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 19:54:03,604 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 608 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1131 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 19:54:03,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1131 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:54:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11096 states. [2024-10-12 19:54:03,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11096 to 9743. [2024-10-12 19:54:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9743 states, 9737 states have (on average 1.5044674951217007) internal successors, (14649), 9741 states have internal predecessors, (14649), 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 19:54:03,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9743 states to 9743 states and 14654 transitions. [2024-10-12 19:54:03,881 INFO L78 Accepts]: Start accepts. Automaton has 9743 states and 14654 transitions. Word has length 85 [2024-10-12 19:54:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:03,881 INFO L471 AbstractCegarLoop]: Abstraction has 9743 states and 14654 transitions. [2024-10-12 19:54:03,882 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 19:54:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 9743 states and 14654 transitions. [2024-10-12 19:54:03,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-12 19:54:03,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:03,885 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 19:54:03,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 19:54:03,885 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:03,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash -797511985, now seen corresponding path program 1 times [2024-10-12 19:54:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:03,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216488358] [2024-10-12 19:54:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:03,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:03,949 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 19:54:03,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:03,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216488358] [2024-10-12 19:54:03,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216488358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:03,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:03,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:03,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708768053] [2024-10-12 19:54:03,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:03,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:03,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:03,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:03,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:03,952 INFO L87 Difference]: Start difference. First operand 9743 states and 14654 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 19:54:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:04,174 INFO L93 Difference]: Finished difference Result 13864 states and 20898 transitions. [2024-10-12 19:54:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:04,175 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 19:54:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:04,185 INFO L225 Difference]: With dead ends: 13864 [2024-10-12 19:54:04,186 INFO L226 Difference]: Without dead ends: 4131 [2024-10-12 19:54:04,196 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 19:54:04,197 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 323 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 465 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 19:54:04,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 465 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2024-10-12 19:54:04,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 4073. [2024-10-12 19:54:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 4067 states have (on average 1.4029997541185149) internal successors, (5706), 4071 states have internal predecessors, (5706), 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 19:54:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 5711 transitions. [2024-10-12 19:54:04,309 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 5711 transitions. Word has length 91 [2024-10-12 19:54:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:04,309 INFO L471 AbstractCegarLoop]: Abstraction has 4073 states and 5711 transitions. [2024-10-12 19:54:04,309 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 19:54:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 5711 transitions. [2024-10-12 19:54:04,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 19:54:04,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:04,311 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 19:54:04,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 19:54:04,312 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:04,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 941878888, now seen corresponding path program 1 times [2024-10-12 19:54:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:04,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842902267] [2024-10-12 19:54:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:04,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:04,376 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 19:54:04,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:04,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842902267] [2024-10-12 19:54:04,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842902267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:04,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:04,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 19:54:04,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873948284] [2024-10-12 19:54:04,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:04,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:54:04,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:04,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:54:04,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:54:04,379 INFO L87 Difference]: Start difference. First operand 4073 states and 5711 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 19:54:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:04,688 INFO L93 Difference]: Finished difference Result 9565 states and 13403 transitions. [2024-10-12 19:54:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 19:54:04,689 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 19:54:04,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:04,701 INFO L225 Difference]: With dead ends: 9565 [2024-10-12 19:54:04,701 INFO L226 Difference]: Without dead ends: 5656 [2024-10-12 19:54:04,706 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 19:54:04,709 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 519 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2140 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 19:54:04,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2140 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5656 states. [2024-10-12 19:54:04,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5656 to 4075. [2024-10-12 19:54:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4069 states have (on average 1.3998525436225118) internal successors, (5696), 4073 states have internal predecessors, (5696), 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 19:54:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 5701 transitions. [2024-10-12 19:54:04,839 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 5701 transitions. Word has length 95 [2024-10-12 19:54:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:04,839 INFO L471 AbstractCegarLoop]: Abstraction has 4075 states and 5701 transitions. [2024-10-12 19:54:04,839 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 19:54:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 5701 transitions. [2024-10-12 19:54:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-12 19:54:04,842 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:04,842 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 19:54:04,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 19:54:04,843 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:04,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1176700131, now seen corresponding path program 1 times [2024-10-12 19:54:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:04,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924971434] [2024-10-12 19:54:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:04,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:04,911 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 19:54:04,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:04,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924971434] [2024-10-12 19:54:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924971434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:04,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468939778] [2024-10-12 19:54:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:04,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:04,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:04,915 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 19:54:04,916 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 19:54:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:05,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 19:54:05,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:05,162 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 19:54:05,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:05,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468939778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:05,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:05,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 19:54:05,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96831410] [2024-10-12 19:54:05,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:05,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:05,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:05,165 INFO L87 Difference]: Start difference. First operand 4075 states and 5701 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 19:54:05,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:05,352 INFO L93 Difference]: Finished difference Result 5218 states and 7290 transitions. [2024-10-12 19:54:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:05,352 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 19:54:05,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:05,365 INFO L225 Difference]: With dead ends: 5218 [2024-10-12 19:54:05,365 INFO L226 Difference]: Without dead ends: 5214 [2024-10-12 19:54:05,367 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 19:54:05,368 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 219 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 727 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 19:54:05,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 727 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2024-10-12 19:54:05,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 5076. [2024-10-12 19:54:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 5070 states have (on average 1.4041420118343195) internal successors, (7119), 5074 states have internal predecessors, (7119), 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 19:54:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 7124 transitions. [2024-10-12 19:54:05,567 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 7124 transitions. Word has length 97 [2024-10-12 19:54:05,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:05,567 INFO L471 AbstractCegarLoop]: Abstraction has 5076 states and 7124 transitions. [2024-10-12 19:54:05,567 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 19:54:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 7124 transitions. [2024-10-12 19:54:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-12 19:54:05,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:05,571 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] [2024-10-12 19:54:05,589 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 19:54:05,772 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 19:54:05,772 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:05,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1885042639, now seen corresponding path program 1 times [2024-10-12 19:54:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:05,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910209575] [2024-10-12 19:54:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:05,899 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 19:54:05,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:05,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910209575] [2024-10-12 19:54:05,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910209575] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:05,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752186643] [2024-10-12 19:54:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:05,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:05,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:05,902 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 19:54:05,904 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 19:54:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:06,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 19:54:06,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:06,124 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 19:54:06,126 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:06,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752186643] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:06,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:06,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 19:54:06,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592208198] [2024-10-12 19:54:06,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:06,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:06,128 INFO L87 Difference]: Start difference. First operand 5076 states and 7124 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 19:54:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:06,339 INFO L93 Difference]: Finished difference Result 9020 states and 12726 transitions. [2024-10-12 19:54:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:06,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 149 [2024-10-12 19:54:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:06,352 INFO L225 Difference]: With dead ends: 9020 [2024-10-12 19:54:06,352 INFO L226 Difference]: Without dead ends: 3955 [2024-10-12 19:54:06,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 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 19:54:06,360 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 249 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 384 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 19:54:06,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 384 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2024-10-12 19:54:06,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3620. [2024-10-12 19:54:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3614 states have (on average 1.3824017708909795) internal successors, (4996), 3618 states have internal predecessors, (4996), 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 19:54:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5001 transitions. [2024-10-12 19:54:06,531 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5001 transitions. Word has length 149 [2024-10-12 19:54:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:06,532 INFO L471 AbstractCegarLoop]: Abstraction has 3620 states and 5001 transitions. [2024-10-12 19:54:06,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 19:54:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5001 transitions. [2024-10-12 19:54:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-12 19:54:06,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:06,535 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] [2024-10-12 19:54:06,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:06,736 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 19:54:06,736 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:06,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1521318299, now seen corresponding path program 1 times [2024-10-12 19:54:06,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:06,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415240704] [2024-10-12 19:54:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:06,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:06,904 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 19:54:06,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415240704] [2024-10-12 19:54:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415240704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346006146] [2024-10-12 19:54:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:06,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:06,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:06,908 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 19:54:06,910 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 19:54:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:07,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 19:54:07,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:07,110 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 19:54:07,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:07,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346006146] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:07,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:07,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 19:54:07,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938967016] [2024-10-12 19:54:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:07,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:07,115 INFO L87 Difference]: Start difference. First operand 3620 states and 5001 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 19:54:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:07,273 INFO L93 Difference]: Finished difference Result 7077 states and 9824 transitions. [2024-10-12 19:54:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:07,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 152 [2024-10-12 19:54:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:07,284 INFO L225 Difference]: With dead ends: 7077 [2024-10-12 19:54:07,285 INFO L226 Difference]: Without dead ends: 3620 [2024-10-12 19:54:07,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 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 19:54:07,289 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 259 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 356 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 19:54:07,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 356 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2024-10-12 19:54:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3620. [2024-10-12 19:54:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3614 states have (on average 1.3436635307138904) internal successors, (4856), 3618 states have internal predecessors, (4856), 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 19:54:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 4861 transitions. [2024-10-12 19:54:07,399 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 4861 transitions. Word has length 152 [2024-10-12 19:54:07,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:07,399 INFO L471 AbstractCegarLoop]: Abstraction has 3620 states and 4861 transitions. [2024-10-12 19:54:07,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 19:54:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 4861 transitions. [2024-10-12 19:54:07,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-12 19:54:07,402 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:07,402 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] [2024-10-12 19:54:07,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:07,603 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 19:54:07,603 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:07,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1599015156, now seen corresponding path program 1 times [2024-10-12 19:54:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:07,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738553320] [2024-10-12 19:54:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:07,742 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 19:54:07,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:07,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738553320] [2024-10-12 19:54:07,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738553320] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:07,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398702314] [2024-10-12 19:54:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:07,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:07,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:07,745 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 19:54:07,746 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 19:54:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:07,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 19:54:07,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:07,882 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 19:54:07,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398702314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:07,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:07,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 19:54:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328308841] [2024-10-12 19:54:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:07,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:07,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 19:54:07,885 INFO L87 Difference]: Start difference. First operand 3620 states and 4861 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 19:54:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:08,283 INFO L93 Difference]: Finished difference Result 8366 states and 11409 transitions. [2024-10-12 19:54:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:08,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 153 [2024-10-12 19:54:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:08,295 INFO L225 Difference]: With dead ends: 8366 [2024-10-12 19:54:08,295 INFO L226 Difference]: Without dead ends: 4909 [2024-10-12 19:54:08,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 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 19:54:08,300 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 194 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:08,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 588 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:54:08,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2024-10-12 19:54:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4581. [2024-10-12 19:54:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4575 states have (on average 1.3077595628415302) internal successors, (5983), 4579 states have internal predecessors, (5983), 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 19:54:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 5988 transitions. [2024-10-12 19:54:08,435 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 5988 transitions. Word has length 153 [2024-10-12 19:54:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:08,436 INFO L471 AbstractCegarLoop]: Abstraction has 4581 states and 5988 transitions. [2024-10-12 19:54:08,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 19:54:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 5988 transitions. [2024-10-12 19:54:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-12 19:54:08,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:08,440 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] [2024-10-12 19:54:08,457 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 19:54:08,644 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 19:54:08,645 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:08,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1388898480, now seen corresponding path program 1 times [2024-10-12 19:54:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:08,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640869169] [2024-10-12 19:54:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:08,886 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 19:54:08,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:08,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640869169] [2024-10-12 19:54:08,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640869169] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:08,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358398163] [2024-10-12 19:54:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:08,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:08,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:08,889 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 19:54:08,891 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 19:54:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:09,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 19:54:09,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:09,181 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 19:54:09,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:09,345 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 19:54:09,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358398163] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:09,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:09,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-12 19:54:09,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494034638] [2024-10-12 19:54:09,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:09,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 19:54:09,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 19:54:09,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:54:09,350 INFO L87 Difference]: Start difference. First operand 4581 states and 5988 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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 19:54:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:09,920 INFO L93 Difference]: Finished difference Result 12810 states and 16771 transitions. [2024-10-12 19:54:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 19:54:09,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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 19:54:09,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:09,937 INFO L225 Difference]: With dead ends: 12810 [2024-10-12 19:54:09,938 INFO L226 Difference]: Without dead ends: 8392 [2024-10-12 19:54:09,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 311 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 19:54:09,945 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 874 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:09,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 3624 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:54:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8392 states. [2024-10-12 19:54:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8392 to 7125. [2024-10-12 19:54:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7125 states, 7119 states have (on average 1.3215339233038348) internal successors, (9408), 7123 states have internal predecessors, (9408), 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 19:54:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 9413 transitions. [2024-10-12 19:54:10,184 INFO L78 Accepts]: Start accepts. Automaton has 7125 states and 9413 transitions. Word has length 155 [2024-10-12 19:54:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:10,185 INFO L471 AbstractCegarLoop]: Abstraction has 7125 states and 9413 transitions. [2024-10-12 19:54:10,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 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 19:54:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 7125 states and 9413 transitions. [2024-10-12 19:54:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-10-12 19:54:10,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:10,189 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] [2024-10-12 19:54:10,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:10,389 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 19:54:10,390 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:10,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1486402490, now seen corresponding path program 1 times [2024-10-12 19:54:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:10,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690717433] [2024-10-12 19:54:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 12 proven. 185 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:54:10,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690717433] [2024-10-12 19:54:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690717433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109363508] [2024-10-12 19:54:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:10,838 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 19:54:10,839 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 19:54:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:10,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 19:54:10,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:11,293 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 19:54:11,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:11,561 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 19:54:11,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109363508] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:11,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:11,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-10-12 19:54:11,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299904628] [2024-10-12 19:54:11,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:11,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 19:54:11,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:11,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 19:54:11,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-12 19:54:11,564 INFO L87 Difference]: Start difference. First operand 7125 states and 9413 transitions. Second operand has 14 states, 14 states have (on average 24.285714285714285) internal successors, (340), 14 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 19:54:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:12,597 INFO L93 Difference]: Finished difference Result 18369 states and 24117 transitions. [2024-10-12 19:54:12,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-12 19:54:12,597 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.285714285714285) internal successors, (340), 14 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 250 [2024-10-12 19:54:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:12,622 INFO L225 Difference]: With dead ends: 18369 [2024-10-12 19:54:12,622 INFO L226 Difference]: Without dead ends: 11407 [2024-10-12 19:54:12,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2024-10-12 19:54:12,634 INFO L432 NwaCegarLoop]: 971 mSDtfsCounter, 2951 mSDsluCounter, 7478 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2951 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:12,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2951 Valid, 8449 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:54:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11407 states. [2024-10-12 19:54:13,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11407 to 9178. [2024-10-12 19:54:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9178 states, 9172 states have (on average 1.327845617095508) internal successors, (12179), 9176 states have internal predecessors, (12179), 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 19:54:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 12184 transitions. [2024-10-12 19:54:13,040 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 12184 transitions. Word has length 250 [2024-10-12 19:54:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:13,040 INFO L471 AbstractCegarLoop]: Abstraction has 9178 states and 12184 transitions. [2024-10-12 19:54:13,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.285714285714285) internal successors, (340), 14 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 19:54:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 12184 transitions. [2024-10-12 19:54:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-12 19:54:13,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:13,048 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 19:54:13,065 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 19:54:13,248 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 19:54:13,250 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:13,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:13,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1990293476, now seen corresponding path program 1 times [2024-10-12 19:54:13,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:13,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373736139] [2024-10-12 19:54:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:13,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-10-12 19:54:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373736139] [2024-10-12 19:54:13,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373736139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:13,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:13,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 19:54:13,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952780132] [2024-10-12 19:54:13,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:13,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 19:54:13,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:13,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 19:54:13,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 19:54:13,380 INFO L87 Difference]: Start difference. First operand 9178 states and 12184 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 19:54:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:13,607 INFO L93 Difference]: Finished difference Result 10362 states and 13536 transitions. [2024-10-12 19:54:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 19:54:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 347 [2024-10-12 19:54:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:13,616 INFO L225 Difference]: With dead ends: 10362 [2024-10-12 19:54:13,617 INFO L226 Difference]: Without dead ends: 1243 [2024-10-12 19:54:13,624 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 19:54:13,625 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 128 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 352 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 19:54:13,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 352 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2024-10-12 19:54:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 880. [2024-10-12 19:54:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 876 states have (on average 1.0787671232876712) internal successors, (945), 878 states have internal predecessors, (945), 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 19:54:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 948 transitions. [2024-10-12 19:54:13,690 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 948 transitions. Word has length 347 [2024-10-12 19:54:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:13,691 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 948 transitions. [2024-10-12 19:54:13,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 19:54:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 948 transitions. [2024-10-12 19:54:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-12 19:54:13,697 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:13,698 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 19:54:13,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 19:54:13,698 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:13,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 553876542, now seen corresponding path program 1 times [2024-10-12 19:54:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729675169] [2024-10-12 19:54:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-10-12 19:54:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729675169] [2024-10-12 19:54:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729675169] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:13,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:13,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 19:54:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984546285] [2024-10-12 19:54:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:13,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:54:13,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:54:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 19:54:13,958 INFO L87 Difference]: Start difference. First operand 880 states and 948 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 19:54:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:14,117 INFO L93 Difference]: Finished difference Result 1258 states and 1372 transitions. [2024-10-12 19:54:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 19:54:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 19:54:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:14,123 INFO L225 Difference]: With dead ends: 1258 [2024-10-12 19:54:14,123 INFO L226 Difference]: Without dead ends: 1066 [2024-10-12 19:54:14,124 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 19:54:14,124 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 214 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:14,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1372 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2024-10-12 19:54:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 943. [2024-10-12 19:54:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 939 states have (on average 1.0809371671991481) internal successors, (1015), 941 states have internal predecessors, (1015), 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 19:54:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1018 transitions. [2024-10-12 19:54:14,168 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1018 transitions. Word has length 348 [2024-10-12 19:54:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:14,169 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1018 transitions. [2024-10-12 19:54:14,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 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 19:54:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1018 transitions. [2024-10-12 19:54:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-10-12 19:54:14,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:14,174 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 19:54:14,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 19:54:14,175 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:14,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1368057438, now seen corresponding path program 1 times [2024-10-12 19:54:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543593505] [2024-10-12 19:54:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-10-12 19:54:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:14,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543593505] [2024-10-12 19:54:14,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543593505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:14,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:54:14,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 19:54:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632889508] [2024-10-12 19:54:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:14,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 19:54:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 19:54:14,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 19:54:14,327 INFO L87 Difference]: Start difference. First operand 943 states and 1018 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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 19:54:14,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:14,425 INFO L93 Difference]: Finished difference Result 1128 states and 1220 transitions. [2024-10-12 19:54:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 19:54:14,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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 349 [2024-10-12 19:54:14,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:14,430 INFO L225 Difference]: With dead ends: 1128 [2024-10-12 19:54:14,430 INFO L226 Difference]: Without dead ends: 936 [2024-10-12 19:54:14,431 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 19:54:14,432 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 172 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:14,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 778 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-10-12 19:54:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 932. [2024-10-12 19:54:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 929 states have (on average 1.068891280947255) internal successors, (993), 930 states have internal predecessors, (993), 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 19:54:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 995 transitions. [2024-10-12 19:54:14,474 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 995 transitions. Word has length 349 [2024-10-12 19:54:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:14,475 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 995 transitions. [2024-10-12 19:54:14,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 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 19:54:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 995 transitions. [2024-10-12 19:54:14,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-10-12 19:54:14,480 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:14,480 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:14,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 19:54:14,481 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:14,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash -898019086, now seen corresponding path program 1 times [2024-10-12 19:54:14,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:14,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740449333] [2024-10-12 19:54:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:14,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-12 19:54:15,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:15,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740449333] [2024-10-12 19:54:15,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740449333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:15,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63336694] [2024-10-12 19:54:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:15,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:15,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:15,187 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 19:54:15,189 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 19:54:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:15,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 19:54:15,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-12 19:54:16,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 20 proven. 232 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-12 19:54:16,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63336694] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:16,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:16,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2024-10-12 19:54:16,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085591596] [2024-10-12 19:54:16,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:16,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 19:54:16,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:16,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 19:54:16,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2024-10-12 19:54:16,518 INFO L87 Difference]: Start difference. First operand 932 states and 995 transitions. Second operand has 26 states, 26 states have (on average 14.461538461538462) internal successors, (376), 26 states have internal predecessors, (376), 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 19:54:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:16,997 INFO L93 Difference]: Finished difference Result 1056 states and 1123 transitions. [2024-10-12 19:54:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-12 19:54:16,997 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.461538461538462) internal successors, (376), 26 states have internal predecessors, (376), 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 404 [2024-10-12 19:54:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:17,001 INFO L225 Difference]: With dead ends: 1056 [2024-10-12 19:54:17,002 INFO L226 Difference]: Without dead ends: 1053 [2024-10-12 19:54:17,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 19:54:17,003 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 784 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 6090 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:17,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 6090 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 19:54:17,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2024-10-12 19:54:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1026. [2024-10-12 19:54:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1023 states have (on average 1.0664711632453567) internal successors, (1091), 1024 states have internal predecessors, (1091), 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 19:54:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1093 transitions. [2024-10-12 19:54:17,049 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1093 transitions. Word has length 404 [2024-10-12 19:54:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:17,050 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1093 transitions. [2024-10-12 19:54:17,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.461538461538462) internal successors, (376), 26 states have internal predecessors, (376), 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 19:54:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1093 transitions. [2024-10-12 19:54:17,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-10-12 19:54:17,053 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:17,054 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:17,072 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 19:54:17,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:17,255 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:17,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash -835962693, now seen corresponding path program 1 times [2024-10-12 19:54:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105682545] [2024-10-12 19:54:17,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:17,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 203 proven. 45 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-10-12 19:54:17,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:17,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105682545] [2024-10-12 19:54:17,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105682545] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:17,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435172480] [2024-10-12 19:54:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:17,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:17,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:17,695 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 19:54:17,696 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 19:54:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:17,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 19:54:17,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 203 proven. 45 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-10-12 19:54:18,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 203 proven. 45 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-10-12 19:54:18,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435172480] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:18,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:18,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-12 19:54:18,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668893908] [2024-10-12 19:54:18,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:18,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 19:54:18,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 19:54:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:54:18,258 INFO L87 Difference]: Start difference. First operand 1026 states and 1093 transitions. Second operand has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 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 19:54:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:18,487 INFO L93 Difference]: Finished difference Result 1400 states and 1495 transitions. [2024-10-12 19:54:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 19:54:18,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 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 449 [2024-10-12 19:54:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:18,492 INFO L225 Difference]: With dead ends: 1400 [2024-10-12 19:54:18,492 INFO L226 Difference]: Without dead ends: 1219 [2024-10-12 19:54:18,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 902 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 19:54:18,493 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 384 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:18,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2311 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-10-12 19:54:18,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1107. [2024-10-12 19:54:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1104 states have (on average 1.0661231884057971) internal successors, (1177), 1105 states have internal predecessors, (1177), 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 19:54:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1179 transitions. [2024-10-12 19:54:18,548 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1179 transitions. Word has length 449 [2024-10-12 19:54:18,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:18,549 INFO L471 AbstractCegarLoop]: Abstraction has 1107 states and 1179 transitions. [2024-10-12 19:54:18,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 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 19:54:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1179 transitions. [2024-10-12 19:54:18,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-10-12 19:54:18,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:18,553 INFO L215 NwaCegarLoop]: trace histogram [10, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:18,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 19:54:18,757 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,SelfDestructingSolverStorable25 [2024-10-12 19:54:18,758 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:18,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash -562440443, now seen corresponding path program 1 times [2024-10-12 19:54:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:18,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098334039] [2024-10-12 19:54:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:18,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:19,698 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 138 proven. 518 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 19:54:19,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:19,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098334039] [2024-10-12 19:54:19,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098334039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:19,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404671322] [2024-10-12 19:54:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:19,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:19,701 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 19:54:19,703 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 19:54:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:19,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-12 19:54:19,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 162 proven. 494 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 19:54:20,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 25 proven. 631 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 19:54:21,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404671322] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:21,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:21,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 30 [2024-10-12 19:54:21,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925554865] [2024-10-12 19:54:21,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:21,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-12 19:54:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-12 19:54:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2024-10-12 19:54:21,415 INFO L87 Difference]: Start difference. First operand 1107 states and 1179 transitions. Second operand has 30 states, 30 states have (on average 21.6) internal successors, (648), 30 states have internal predecessors, (648), 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 19:54:22,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:22,054 INFO L93 Difference]: Finished difference Result 1237 states and 1313 transitions. [2024-10-12 19:54:22,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-12 19:54:22,055 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 21.6) internal successors, (648), 30 states have internal predecessors, (648), 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 506 [2024-10-12 19:54:22,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:22,061 INFO L225 Difference]: With dead ends: 1237 [2024-10-12 19:54:22,062 INFO L226 Difference]: Without dead ends: 1234 [2024-10-12 19:54:22,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1006 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 19:54:22,064 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 1017 mSDsluCounter, 9516 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:22,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 10067 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 19:54:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-10-12 19:54:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1201. [2024-10-12 19:54:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1198 states have (on average 1.0642737896494157) internal successors, (1275), 1199 states have internal predecessors, (1275), 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 19:54:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1277 transitions. [2024-10-12 19:54:22,122 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1277 transitions. Word has length 506 [2024-10-12 19:54:22,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:22,123 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1277 transitions. [2024-10-12 19:54:22,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 21.6) internal successors, (648), 30 states have internal predecessors, (648), 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 19:54:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1277 transitions. [2024-10-12 19:54:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-10-12 19:54:22,127 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:22,128 INFO L215 NwaCegarLoop]: trace histogram [11, 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 19:54:22,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:22,328 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 19:54:22,329 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:22,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1842547320, now seen corresponding path program 1 times [2024-10-12 19:54:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866905486] [2024-10-12 19:54:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 25 proven. 715 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-12 19:54:23,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:23,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866905486] [2024-10-12 19:54:23,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866905486] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029617081] [2024-10-12 19:54:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:23,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:23,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:23,444 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 19:54:23,445 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 19:54:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:23,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-12 19:54:23,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 343 proven. 200 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-10-12 19:54:23,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 343 proven. 200 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-10-12 19:54:24,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029617081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:24,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:24,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 11] total 25 [2024-10-12 19:54:24,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758353068] [2024-10-12 19:54:24,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:24,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-12 19:54:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-12 19:54:24,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2024-10-12 19:54:24,183 INFO L87 Difference]: Start difference. First operand 1201 states and 1277 transitions. Second operand has 25 states, 25 states have (on average 29.08) internal successors, (727), 25 states have internal predecessors, (727), 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 19:54:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:25,604 INFO L93 Difference]: Finished difference Result 1885 states and 2005 transitions. [2024-10-12 19:54:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-12 19:54:25,604 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 29.08) internal successors, (727), 25 states have internal predecessors, (727), 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 551 [2024-10-12 19:54:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:25,609 INFO L225 Difference]: With dead ends: 1885 [2024-10-12 19:54:25,609 INFO L226 Difference]: Without dead ends: 1704 [2024-10-12 19:54:25,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=568, Invalid=5438, Unknown=0, NotChecked=0, Total=6006 [2024-10-12 19:54:25,612 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 1652 mSDsluCounter, 12650 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 13292 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:25,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 13292 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 19:54:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2024-10-12 19:54:25,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1378. [2024-10-12 19:54:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1375 states have (on average 1.0632727272727274) internal successors, (1462), 1376 states have internal predecessors, (1462), 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 19:54:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1464 transitions. [2024-10-12 19:54:25,687 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1464 transitions. Word has length 551 [2024-10-12 19:54:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:25,688 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1464 transitions. [2024-10-12 19:54:25,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 29.08) internal successors, (727), 25 states have internal predecessors, (727), 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 19:54:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1464 transitions. [2024-10-12 19:54:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-10-12 19:54:25,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:25,694 INFO L215 NwaCegarLoop]: trace histogram [12, 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, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:54:25,713 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 19:54:25,894 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 19:54:25,895 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:25,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash 439474753, now seen corresponding path program 1 times [2024-10-12 19:54:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:25,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068450426] [2024-10-12 19:54:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:25,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 82 proven. 988 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:54:27,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068450426] [2024-10-12 19:54:27,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068450426] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333360218] [2024-10-12 19:54:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:27,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:27,810 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 19:54:27,811 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 19:54:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:28,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-12 19:54:28,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 169 proven. 901 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:54:29,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 19:54:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 30 proven. 1040 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:54:29,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333360218] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 19:54:29,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 19:54:29,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 38 [2024-10-12 19:54:29,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638774791] [2024-10-12 19:54:29,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 19:54:29,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-12 19:54:29,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:29,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-12 19:54:29,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2024-10-12 19:54:29,678 INFO L87 Difference]: Start difference. First operand 1378 states and 1464 transitions. Second operand has 38 states, 38 states have (on average 24.236842105263158) internal successors, (921), 38 states have internal predecessors, (921), 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 19:54:30,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:30,823 INFO L93 Difference]: Finished difference Result 2570 states and 2723 transitions. [2024-10-12 19:54:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-12 19:54:30,823 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 24.236842105263158) internal successors, (921), 38 states have internal predecessors, (921), 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 609 [2024-10-12 19:54:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:30,828 INFO L225 Difference]: With dead ends: 2570 [2024-10-12 19:54:30,828 INFO L226 Difference]: Without dead ends: 2567 [2024-10-12 19:54:30,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1270 GetRequests, 1211 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=283, Invalid=3377, Unknown=0, NotChecked=0, Total=3660 [2024-10-12 19:54:30,830 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 1163 mSDsluCounter, 21859 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 22637 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:30,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 22637 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 19:54:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2024-10-12 19:54:30,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2074. [2024-10-12 19:54:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2071 states have (on average 1.0598744567841623) internal successors, (2195), 2072 states have internal predecessors, (2195), 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 19:54:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2197 transitions. [2024-10-12 19:54:30,902 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2197 transitions. Word has length 609 [2024-10-12 19:54:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:30,902 INFO L471 AbstractCegarLoop]: Abstraction has 2074 states and 2197 transitions. [2024-10-12 19:54:30,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 24.236842105263158) internal successors, (921), 38 states have internal predecessors, (921), 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 19:54:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2197 transitions. [2024-10-12 19:54:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2024-10-12 19:54:30,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:54:30,926 INFO L215 NwaCegarLoop]: trace histogram [13, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:54:30,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 19:54:31,126 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 19:54:31,127 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:54:31,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:54:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash -534576180, now seen corresponding path program 1 times [2024-10-12 19:54:31,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:54:31,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606281807] [2024-10-12 19:54:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:31,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:54:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 731 proven. 218 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-12 19:54:31,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:54:31,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606281807] [2024-10-12 19:54:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606281807] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:54:31,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146031393] [2024-10-12 19:54:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:54:31,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:54:31,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:54:31,608 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 19:54:31,610 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 19:54:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:54:31,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 19:54:31,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:54:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 949 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-12 19:54:32,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:54:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146031393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:54:32,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:54:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2024-10-12 19:54:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522594094] [2024-10-12 19:54:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:54:32,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 19:54:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:54:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 19:54:32,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:54:32,262 INFO L87 Difference]: Start difference. First operand 2074 states and 2197 transitions. Second operand has 9 states, 9 states have (on average 51.44444444444444) internal successors, (463), 9 states have internal predecessors, (463), 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 19:54:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:54:32,459 INFO L93 Difference]: Finished difference Result 2087 states and 2210 transitions. [2024-10-12 19:54:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 19:54:32,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 51.44444444444444) internal successors, (463), 9 states have internal predecessors, (463), 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 654 [2024-10-12 19:54:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:54:32,463 INFO L225 Difference]: With dead ends: 2087 [2024-10-12 19:54:32,463 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 19:54:32,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-10-12 19:54:32,465 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 553 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:54:32,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2342 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:54:32,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 19:54:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 19:54:32,466 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 19:54:32,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 19:54:32,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 654 [2024-10-12 19:54:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:54:32,468 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 19:54:32,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.44444444444444) internal successors, (463), 9 states have internal predecessors, (463), 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 19:54:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 19:54:32,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 19:54:32,472 INFO L782 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 19:54:32,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 19:54:32,672 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 19:54:32,675 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] [2024-10-12 19:54:32,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.