./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label09.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ffdda078a4af5cadd809285deda853e717921f28c9c08179af4d863a439eed59 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:33:24,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:33:24,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:33:24,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:33:24,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:33:24,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:33:24,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:33:24,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:33:24,350 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:33:24,350 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:33:24,351 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:33:24,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:33:24,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:33:24,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:33:24,352 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:33:24,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:33:24,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:33:24,353 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:33:24,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:33:24,354 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:33:24,354 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:33:24,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:33:24,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:33:24,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:33:24,359 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:33:24,359 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:33:24,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:33:24,360 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:33:24,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:33:24,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:33:24,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:33:24,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:33:24,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:33:24,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:33:24,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:33:24,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:33:24,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:33:24,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:33:24,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:33:24,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:33:24,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:33:24,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:33:24,376 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffdda078a4af5cadd809285deda853e717921f28c9c08179af4d863a439eed59 [2024-10-10 22:33:24,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:33:24,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:33:24,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:33:24,659 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:33:24,660 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:33:24,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2024-10-10 22:33:26,134 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:33:26,387 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:33:26,388 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2024-10-10 22:33:26,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c17911bf0/0d601e369ef44568a551c04345f39db1/FLAG0f6f68da3 [2024-10-10 22:33:26,706 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c17911bf0/0d601e369ef44568a551c04345f39db1 [2024-10-10 22:33:26,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:33:26,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:33:26,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:33:26,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:33:26,718 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:33:26,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:33:26" (1/1) ... [2024-10-10 22:33:26,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d3da80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:26, skipping insertion in model container [2024-10-10 22:33:26,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:33:26" (1/1) ... [2024-10-10 22:33:26,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:33:27,120 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2024-10-10 22:33:27,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:33:27,185 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:33:27,295 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2024-10-10 22:33:27,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:33:27,323 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:33:27,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27 WrapperNode [2024-10-10 22:33:27,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:33:27,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:33:27,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:33:27,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:33:27,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,409 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2024-10-10 22:33:27,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:33:27,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:33:27,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:33:27,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:33:27,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,464 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]. [2024-10-10 22:33:27,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,505 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,509 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:33:27,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:33:27,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:33:27,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:33:27,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (1/1) ... [2024-10-10 22:33:27,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:33:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:33:27,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:33:27,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:33:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:33:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:33:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:33:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:33:27,695 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:33:27,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:33:28,782 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-10-10 22:33:28,782 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:33:28,832 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:33:28,833 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-10 22:33:28,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:33:28 BoogieIcfgContainer [2024-10-10 22:33:28,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:33:28,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:33:28,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:33:28,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:33:28,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:33:26" (1/3) ... [2024-10-10 22:33:28,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3a17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:33:28, skipping insertion in model container [2024-10-10 22:33:28,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:33:27" (2/3) ... [2024-10-10 22:33:28,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f3a17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:33:28, skipping insertion in model container [2024-10-10 22:33:28,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:33:28" (3/3) ... [2024-10-10 22:33:28,841 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label09.c [2024-10-10 22:33:28,858 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:33:28,859 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:33:28,930 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:33:28,938 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;@63bd652b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:33:28,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:33:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.9776119402985075) internal successors, (265), 135 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-10 22:33:28,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:33:28,955 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:33:28,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:33:28,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:33:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1082862265, now seen corresponding path program 1 times [2024-10-10 22:33:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:33:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088167131] [2024-10-10 22:33:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:33:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:33:29,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:33:29,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088167131] [2024-10-10 22:33:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088167131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:33:29,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:33:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:33:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297105773] [2024-10-10 22:33:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:33:29,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:33:29,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:33:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:33:29,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:33:29,403 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.9776119402985075) internal successors, (265), 135 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:33:29,445 INFO L93 Difference]: Finished difference Result 271 states and 529 transitions. [2024-10-10 22:33:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:33:29,448 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-10-10 22:33:29,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:33:29,457 INFO L225 Difference]: With dead ends: 271 [2024-10-10 22:33:29,458 INFO L226 Difference]: Without dead ends: 134 [2024-10-10 22:33:29,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:33:29,466 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:33:29,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:33:29,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-10 22:33:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-10-10 22:33:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.5037593984962405) internal successors, (200), 133 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 200 transitions. [2024-10-10 22:33:29,511 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 200 transitions. Word has length 117 [2024-10-10 22:33:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:33:29,512 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 200 transitions. [2024-10-10 22:33:29,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 200 transitions. [2024-10-10 22:33:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-10 22:33:29,514 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:33:29,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:33:29,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:33:29,515 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:33:29,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:33:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1496146631, now seen corresponding path program 1 times [2024-10-10 22:33:29,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:33:29,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746556095] [2024-10-10 22:33:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:29,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:33:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:33:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:33:29,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746556095] [2024-10-10 22:33:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746556095] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:33:29,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:33:29,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:33:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046502973] [2024-10-10 22:33:29,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:33:29,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:33:29,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:33:29,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:33:29,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:33:29,781 INFO L87 Difference]: Start difference. First operand 134 states and 200 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:33:30,305 INFO L93 Difference]: Finished difference Result 398 states and 597 transitions. [2024-10-10 22:33:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:33:30,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-10-10 22:33:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:33:30,310 INFO L225 Difference]: With dead ends: 398 [2024-10-10 22:33:30,310 INFO L226 Difference]: Without dead ends: 265 [2024-10-10 22:33:30,313 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 [2024-10-10 22:33:30,316 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-10 22:33:30,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 36 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-10 22:33:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-10-10 22:33:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-10-10 22:33:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.4128787878787878) internal successors, (373), 264 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 373 transitions. [2024-10-10 22:33:30,351 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 373 transitions. Word has length 117 [2024-10-10 22:33:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:33:30,352 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 373 transitions. [2024-10-10 22:33:30,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 373 transitions. [2024-10-10 22:33:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-10 22:33:30,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:33:30,354 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-10 22:33:30,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:33:30,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:33:30,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:33:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 106901247, now seen corresponding path program 1 times [2024-10-10 22:33:30,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:33:30,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821578824] [2024-10-10 22:33:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:30,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:33:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:33:30,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:33:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821578824] [2024-10-10 22:33:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821578824] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:33:30,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761776458] [2024-10-10 22:33:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:30,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:33:30,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:33:30,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:33:30,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:33:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:31,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:33:31,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:33:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-10 22:33:31,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:33:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761776458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:33:31,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:33:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-10 22:33:31,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236587407] [2024-10-10 22:33:31,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:33:31,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:33:31,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:33:31,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:33:31,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:33:31,342 INFO L87 Difference]: Start difference. First operand 265 states and 373 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:33:31,788 INFO L93 Difference]: Finished difference Result 791 states and 1116 transitions. [2024-10-10 22:33:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:33:31,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-10-10 22:33:31,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:33:31,792 INFO L225 Difference]: With dead ends: 791 [2024-10-10 22:33:31,792 INFO L226 Difference]: Without dead ends: 527 [2024-10-10 22:33:31,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:33:31,794 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:33:31,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:33:31,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-10-10 22:33:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2024-10-10 22:33:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.344106463878327) internal successors, (707), 526 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 707 transitions. [2024-10-10 22:33:31,829 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 707 transitions. Word has length 121 [2024-10-10 22:33:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:33:31,831 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 707 transitions. [2024-10-10 22:33:31,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 707 transitions. [2024-10-10 22:33:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-10 22:33:31,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:33:31,835 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-10 22:33:31,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 22:33:32,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:33:32,036 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:33:32,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:33:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1551745518, now seen corresponding path program 1 times [2024-10-10 22:33:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:33:32,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517877379] [2024-10-10 22:33:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:33:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:33:32,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:33:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517877379] [2024-10-10 22:33:32,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517877379] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:33:32,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:33:32,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:33:32,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657636987] [2024-10-10 22:33:32,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:33:32,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:33:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:33:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:33:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:33:32,183 INFO L87 Difference]: Start difference. First operand 527 states and 707 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:33:32,604 INFO L93 Difference]: Finished difference Result 1577 states and 2118 transitions. [2024-10-10 22:33:32,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:33:32,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-10-10 22:33:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:33:32,609 INFO L225 Difference]: With dead ends: 1577 [2024-10-10 22:33:32,609 INFO L226 Difference]: Without dead ends: 1051 [2024-10-10 22:33:32,611 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 [2024-10-10 22:33:32,614 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 136 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:33:32,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 189 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:33:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-10-10 22:33:32,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 920. [2024-10-10 22:33:32,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 1.2568008705114255) internal successors, (1155), 919 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1155 transitions. [2024-10-10 22:33:32,651 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1155 transitions. Word has length 128 [2024-10-10 22:33:32,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:33:32,652 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1155 transitions. [2024-10-10 22:33:32,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:32,652 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1155 transitions. [2024-10-10 22:33:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-10 22:33:32,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:33:32,664 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-10-10 22:33:32,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 22:33:32,665 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:33:32,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:33:32,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1085129676, now seen corresponding path program 1 times [2024-10-10 22:33:32,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:33:32,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885736041] [2024-10-10 22:33:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:33:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:33:32,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:33:32,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885736041] [2024-10-10 22:33:32,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885736041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:33:32,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:33:32,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-10 22:33:32,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815727062] [2024-10-10 22:33:32,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:33:32,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:33:32,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:33:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:33:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:33:32,826 INFO L87 Difference]: Start difference. First operand 920 states and 1155 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:33:33,284 INFO L93 Difference]: Finished difference Result 2625 states and 3306 transitions. [2024-10-10 22:33:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:33:33,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-10-10 22:33:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:33:33,291 INFO L225 Difference]: With dead ends: 2625 [2024-10-10 22:33:33,291 INFO L226 Difference]: Without dead ends: 1706 [2024-10-10 22:33:33,293 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 [2024-10-10 22:33:33,294 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 116 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:33:33,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 196 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:33:33,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2024-10-10 22:33:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1444. [2024-10-10 22:33:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.2335412335412335) internal successors, (1780), 1443 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1780 transitions. [2024-10-10 22:33:33,323 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1780 transitions. Word has length 140 [2024-10-10 22:33:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:33:33,324 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 1780 transitions. [2024-10-10 22:33:33,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1780 transitions. [2024-10-10 22:33:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-10 22:33:33,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:33:33,328 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:33:33,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-10 22:33:33,329 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:33:33,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:33:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash -856203990, now seen corresponding path program 1 times [2024-10-10 22:33:33,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:33:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954059814] [2024-10-10 22:33:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:33,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:33:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-10 22:33:33,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:33:33,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954059814] [2024-10-10 22:33:33,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954059814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:33:33,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:33:33,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:33:33,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401107244] [2024-10-10 22:33:33,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:33:33,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:33:33,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:33:33,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:33:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-10 22:33:33,498 INFO L87 Difference]: Start difference. First operand 1444 states and 1780 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:33,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:33:33,911 INFO L93 Difference]: Finished difference Result 3149 states and 3845 transitions. [2024-10-10 22:33:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:33:33,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-10-10 22:33:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:33:33,921 INFO L225 Difference]: With dead ends: 3149 [2024-10-10 22:33:33,921 INFO L226 Difference]: Without dead ends: 1444 [2024-10-10 22:33:33,923 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 [2024-10-10 22:33:33,924 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 132 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:33:33,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 60 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:33:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2024-10-10 22:33:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1444. [2024-10-10 22:33:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.1212751212751213) internal successors, (1618), 1443 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1618 transitions. [2024-10-10 22:33:33,961 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1618 transitions. Word has length 144 [2024-10-10 22:33:33,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:33:33,961 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 1618 transitions. [2024-10-10 22:33:33,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1618 transitions. [2024-10-10 22:33:33,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-10 22:33:33,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:33:33,966 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-10 22:33:33,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-10 22:33:33,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:33:33,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:33:33,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1463833102, now seen corresponding path program 1 times [2024-10-10 22:33:33,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:33:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567125533] [2024-10-10 22:33:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:33,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:33:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-10 22:33:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:33:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567125533] [2024-10-10 22:33:34,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567125533] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:33:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226069194] [2024-10-10 22:33:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:34,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:33:34,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:33:34,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:33:34,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:33:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:34,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:33:34,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:33:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-10 22:33:34,489 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:33:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226069194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:33:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:33:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-10 22:33:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547837972] [2024-10-10 22:33:34,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:33:34,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:33:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:33:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:33:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:33:34,492 INFO L87 Difference]: Start difference. First operand 1444 states and 1618 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:33:34,860 INFO L93 Difference]: Finished difference Result 3673 states and 4142 transitions. [2024-10-10 22:33:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:33:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-10-10 22:33:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:33:34,868 INFO L225 Difference]: With dead ends: 3673 [2024-10-10 22:33:34,868 INFO L226 Difference]: Without dead ends: 2230 [2024-10-10 22:33:34,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:33:34,870 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:33:34,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 28 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:33:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2024-10-10 22:33:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1706. [2024-10-10 22:33:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 1.1255131964809384) internal successors, (1919), 1705 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 1919 transitions. [2024-10-10 22:33:34,906 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 1919 transitions. Word has length 148 [2024-10-10 22:33:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:33:34,907 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 1919 transitions. [2024-10-10 22:33:34,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 1919 transitions. [2024-10-10 22:33:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-10 22:33:34,911 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:33:34,911 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, 2, 2, 2, 2, 2, 2, 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] [2024-10-10 22:33:34,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-10 22:33:35,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:33:35,112 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:33:35,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:33:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2109976313, now seen corresponding path program 1 times [2024-10-10 22:33:35,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:33:35,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023051746] [2024-10-10 22:33:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:33:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:33:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:33:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023051746] [2024-10-10 22:33:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023051746] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:33:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319169315] [2024-10-10 22:33:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:33:35,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:33:35,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:33:35,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:33:35,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:33:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:33:35,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-10 22:33:35,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:33:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-10 22:33:35,808 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-10 22:33:35,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319169315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:33:35,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:33:35,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-10 22:33:35,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071590018] [2024-10-10 22:33:35,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:33:35,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-10 22:33:35,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:33:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-10 22:33:35,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:33:35,811 INFO L87 Difference]: Start difference. First operand 1706 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:36,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:33:36,142 INFO L93 Difference]: Finished difference Result 3409 states and 3836 transitions. [2024-10-10 22:33:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-10 22:33:36,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2024-10-10 22:33:36,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:33:36,143 INFO L225 Difference]: With dead ends: 3409 [2024-10-10 22:33:36,143 INFO L226 Difference]: Without dead ends: 0 [2024-10-10 22:33:36,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-10 22:33:36,147 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-10 22:33:36,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 25 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-10 22:33:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-10 22:33:36,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-10 22:33:36,152 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) [2024-10-10 22:33:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-10 22:33:36,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 190 [2024-10-10 22:33:36,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:33:36,154 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-10 22:33:36,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-10 22:33:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-10 22:33:36,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-10 22:33:36,161 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-10 22:33:36,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:33:36,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:33:36,365 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:33:36,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-10 22:33:36,401 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-10 22:33:36,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 10:33:36 BoogieIcfgContainer [2024-10-10 22:33:36,422 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-10 22:33:36,423 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-10 22:33:36,423 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-10 22:33:36,423 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-10 22:33:36,424 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:33:28" (3/4) ... [2024-10-10 22:33:36,426 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-10 22:33:36,445 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-10 22:33:36,446 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-10 22:33:36,447 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-10 22:33:36,447 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-10 22:33:36,616 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-10 22:33:36,616 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-10 22:33:36,617 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-10 22:33:36,618 INFO L158 Benchmark]: Toolchain (without parser) took 9907.49ms. Allocated memory was 184.5MB in the beginning and 289.4MB in the end (delta: 104.9MB). Free memory was 127.0MB in the beginning and 248.0MB in the end (delta: -121.0MB). Peak memory consumption was 150.8MB. Max. memory is 16.1GB. [2024-10-10 22:33:36,618 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 184.5MB. Free memory is still 149.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-10 22:33:36,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.81ms. Allocated memory is still 184.5MB. Free memory was 127.0MB in the beginning and 96.5MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-10-10 22:33:36,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.88ms. Allocated memory is still 184.5MB. Free memory was 96.5MB in the beginning and 90.6MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-10 22:33:36,619 INFO L158 Benchmark]: Boogie Preprocessor took 113.35ms. Allocated memory is still 184.5MB. Free memory was 90.6MB in the beginning and 85.1MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-10 22:33:36,619 INFO L158 Benchmark]: RCFGBuilder took 1309.67ms. Allocated memory was 184.5MB in the beginning and 241.2MB in the end (delta: 56.6MB). Free memory was 85.1MB in the beginning and 147.2MB in the end (delta: -62.2MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2024-10-10 22:33:36,619 INFO L158 Benchmark]: TraceAbstraction took 7587.11ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 147.2MB in the beginning and 92.4MB in the end (delta: 54.8MB). Peak memory consumption was 103.0MB. Max. memory is 16.1GB. [2024-10-10 22:33:36,620 INFO L158 Benchmark]: Witness Printer took 194.34ms. Allocated memory is still 289.4MB. Free memory was 92.4MB in the beginning and 248.0MB in the end (delta: -155.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-10 22:33:36,621 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 184.5MB. Free memory is still 149.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.81ms. Allocated memory is still 184.5MB. Free memory was 127.0MB in the beginning and 96.5MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.88ms. Allocated memory is still 184.5MB. Free memory was 96.5MB in the beginning and 90.6MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 113.35ms. Allocated memory is still 184.5MB. Free memory was 90.6MB in the beginning and 85.1MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1309.67ms. Allocated memory was 184.5MB in the beginning and 241.2MB in the end (delta: 56.6MB). Free memory was 85.1MB in the beginning and 147.2MB in the end (delta: -62.2MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7587.11ms. Allocated memory was 241.2MB in the beginning and 289.4MB in the end (delta: 48.2MB). Free memory was 147.2MB in the beginning and 92.4MB in the end (delta: 54.8MB). Peak memory consumption was 103.0MB. Max. memory is 16.1GB. * Witness Printer took 194.34ms. Allocated memory is still 289.4MB. Free memory was 92.4MB in the beginning and 248.0MB in the end (delta: -155.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 540]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 136 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 525 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 525 mSDsluCounter, 763 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 385 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2233 IncrementalHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 385 mSolverCounterUnsat, 730 mSDtfsCounter, 2233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 479 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1706occurred in iteration=7, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 917 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1564 NumberOfCodeBlocks, 1564 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1553 ConstructedInterpolants, 0 QuantifiedInterpolants, 5447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 846 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 318/327 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((13 < a8) || (a16 < 5)) || (a7 < 1)) || (a20 == 1)) RESULT: Ultimate proved your program to be correct! [2024-10-10 22:33:36,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE