./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23abccf904bd3af5b349907c0c1fe36b3f043e0f305d7494258ac56b80497131 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:34:27,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:34:28,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:34:28,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:34:28,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:34:28,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:34:28,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:34:28,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:34:28,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:34:28,110 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:34:28,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:34:28,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:34:28,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:34:28,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:34:28,114 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:34:28,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:34:28,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:34:28,115 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:34:28,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:34:28,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:34:28,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:34:28,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:34:28,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:34:28,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:34:28,121 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:34:28,121 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:34:28,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:34:28,122 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:34:28,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:34:28,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:34:28,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:34:28,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:34:28,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:34:28,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:34:28,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:34:28,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:34:28,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:34:28,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:34:28,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:34:28,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:34:28,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:34:28,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:34:28,127 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23abccf904bd3af5b349907c0c1fe36b3f043e0f305d7494258ac56b80497131 [2024-11-18 20:34:28,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:34:28,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:34:28,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:34:28,406 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:34:28,407 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:34:28,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i [2024-11-18 20:34:29,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:34:30,171 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:34:30,172 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i [2024-11-18 20:34:30,190 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cf61eddb/4420963988114cf695263f7739d2bf14/FLAGb4f6f2464 [2024-11-18 20:34:30,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cf61eddb/4420963988114cf695263f7739d2bf14 [2024-11-18 20:34:30,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:34:30,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:34:30,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:34:30,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:34:30,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:34:30,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cbdfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30, skipping insertion in model container [2024-11-18 20:34:30,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:34:30,493 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i[919,932] [2024-11-18 20:34:30,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:34:30,636 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:34:30,648 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i[919,932] [2024-11-18 20:34:30,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:34:30,726 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:34:30,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30 WrapperNode [2024-11-18 20:34:30,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:34:30,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:34:30,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:34:30,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:34:30,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,803 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 307 [2024-11-18 20:34:30,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:34:30,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:34:30,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:34:30,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:34:30,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,824 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,859 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]. [2024-11-18 20:34:30,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,876 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:34:30,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:34:30,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:34:30,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:34:30,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (1/1) ... [2024-11-18 20:34:30,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:34:30,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:34:30,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 20:34:30,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 20:34:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:34:31,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:34:31,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:34:31,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:34:31,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:34:31,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:34:31,139 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:34:31,141 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:34:31,781 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-18 20:34:31,781 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:34:31,801 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:34:31,803 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:34:31,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:31 BoogieIcfgContainer [2024-11-18 20:34:31,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:34:31,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:34:31,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:34:31,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:34:31,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:30" (1/3) ... [2024-11-18 20:34:31,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e9aa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:31, skipping insertion in model container [2024-11-18 20:34:31,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:30" (2/3) ... [2024-11-18 20:34:31,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e9aa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:31, skipping insertion in model container [2024-11-18 20:34:31,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:31" (3/3) ... [2024-11-18 20:34:31,814 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-47.i [2024-11-18 20:34:31,832 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:34:31,832 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:34:31,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:34:31,905 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;@667ca87e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:34:31,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:34:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 93 states have (on average 1.5161290322580645) internal successors, (141), 94 states have internal predecessors, (141), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:34:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 20:34:31,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:31,925 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:31,926 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:31,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash -61035326, now seen corresponding path program 1 times [2024-11-18 20:34:31,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820136788] [2024-11-18 20:34:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 20:34:32,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:32,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820136788] [2024-11-18 20:34:32,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820136788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:34:32,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049390740] [2024-11-18 20:34:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:32,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:34:32,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:34:32,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:34:32,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 20:34:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:32,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:34:32,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:34:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 20:34:32,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:34:32,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049390740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:34:32,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:34:32,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:34:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840168003] [2024-11-18 20:34:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:34:32,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:34:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:34:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:34:32,766 INFO L87 Difference]: Start difference. First operand has 130 states, 93 states have (on average 1.5161290322580645) internal successors, (141), 94 states have internal predecessors, (141), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:34:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:32,801 INFO L93 Difference]: Finished difference Result 253 states and 446 transitions. [2024-11-18 20:34:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:34:32,804 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-18 20:34:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:32,812 INFO L225 Difference]: With dead ends: 253 [2024-11-18 20:34:32,812 INFO L226 Difference]: Without dead ends: 126 [2024-11-18 20:34:32,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:34:32,818 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:32,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:34:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-18 20:34:32,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-18 20:34:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 90 states have (on average 1.4444444444444444) internal successors, (130), 90 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 20:34:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 198 transitions. [2024-11-18 20:34:32,872 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 198 transitions. Word has length 221 [2024-11-18 20:34:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:32,873 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 198 transitions. [2024-11-18 20:34:32,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:34:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 198 transitions. [2024-11-18 20:34:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 20:34:32,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:32,879 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:32,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 20:34:33,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 20:34:33,080 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:33,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:33,081 INFO L85 PathProgramCache]: Analyzing trace with hash 847368840, now seen corresponding path program 1 times [2024-11-18 20:34:33,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:33,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648365099] [2024-11-18 20:34:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:33,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:34,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:34:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:34,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648365099] [2024-11-18 20:34:34,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648365099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:34:34,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:34:34,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:34:34,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183960543] [2024-11-18 20:34:34,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:34:34,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:34:34,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:34:34,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:34:34,105 INFO L87 Difference]: Start difference. First operand 126 states and 198 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:34,639 INFO L93 Difference]: Finished difference Result 548 states and 865 transitions. [2024-11-18 20:34:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:34:34,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2024-11-18 20:34:34,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:34,645 INFO L225 Difference]: With dead ends: 548 [2024-11-18 20:34:34,646 INFO L226 Difference]: Without dead ends: 425 [2024-11-18 20:34:34,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:34:34,648 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 461 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:34,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 836 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 20:34:34,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-18 20:34:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 273. [2024-11-18 20:34:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 202 states have (on average 1.4455445544554455) internal successors, (292), 202 states have internal predecessors, (292), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 20:34:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 428 transitions. [2024-11-18 20:34:34,717 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 428 transitions. Word has length 222 [2024-11-18 20:34:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:34,719 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 428 transitions. [2024-11-18 20:34:34,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 428 transitions. [2024-11-18 20:34:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-18 20:34:34,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:34,728 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:34,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:34:34,729 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:34,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash 337895750, now seen corresponding path program 1 times [2024-11-18 20:34:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:34,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172851881] [2024-11-18 20:34:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:34:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:35,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172851881] [2024-11-18 20:34:35,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172851881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:34:35,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:34:35,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:34:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458934907] [2024-11-18 20:34:35,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:34:35,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:34:35,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:34:35,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:34:35,446 INFO L87 Difference]: Start difference. First operand 273 states and 428 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:35,825 INFO L93 Difference]: Finished difference Result 520 states and 813 transitions. [2024-11-18 20:34:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:34:35,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2024-11-18 20:34:35,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:35,829 INFO L225 Difference]: With dead ends: 520 [2024-11-18 20:34:35,829 INFO L226 Difference]: Without dead ends: 250 [2024-11-18 20:34:35,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:34:35,832 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 132 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:35,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 532 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:34:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-18 20:34:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 212. [2024-11-18 20:34:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 141 states have internal predecessors, (193), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 20:34:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 329 transitions. [2024-11-18 20:34:35,884 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 329 transitions. Word has length 222 [2024-11-18 20:34:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:35,886 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 329 transitions. [2024-11-18 20:34:35,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 329 transitions. [2024-11-18 20:34:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-18 20:34:35,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:35,889 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:35,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:34:35,890 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:35,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:35,894 INFO L85 PathProgramCache]: Analyzing trace with hash 519114189, now seen corresponding path program 1 times [2024-11-18 20:34:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:35,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997844902] [2024-11-18 20:34:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:34:36,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:36,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997844902] [2024-11-18 20:34:36,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997844902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:34:36,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:34:36,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 20:34:36,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109994106] [2024-11-18 20:34:36,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:34:36,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 20:34:36,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:36,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 20:34:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 20:34:36,975 INFO L87 Difference]: Start difference. First operand 212 states and 329 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:34:38,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:38,788 INFO L93 Difference]: Finished difference Result 805 states and 1245 transitions. [2024-11-18 20:34:38,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 20:34:38,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 224 [2024-11-18 20:34:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:38,795 INFO L225 Difference]: With dead ends: 805 [2024-11-18 20:34:38,795 INFO L226 Difference]: Without dead ends: 664 [2024-11-18 20:34:38,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:34:38,798 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 1056 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:38,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 938 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 20:34:38,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-18 20:34:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 582. [2024-11-18 20:34:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 449 states have (on average 1.44097995545657) internal successors, (647), 451 states have internal predecessors, (647), 126 states have call successors, (126), 6 states have call predecessors, (126), 6 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-18 20:34:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 899 transitions. [2024-11-18 20:34:38,895 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 899 transitions. Word has length 224 [2024-11-18 20:34:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:38,895 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 899 transitions. [2024-11-18 20:34:38,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:34:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 899 transitions. [2024-11-18 20:34:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-18 20:34:38,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:38,901 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:38,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:34:38,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:38,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1065159053, now seen corresponding path program 1 times [2024-11-18 20:34:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:38,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385274495] [2024-11-18 20:34:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:38,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:34:39,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:39,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385274495] [2024-11-18 20:34:39,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385274495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:34:39,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:34:39,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:34:39,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8865008] [2024-11-18 20:34:39,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:34:39,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:34:39,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:39,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:34:39,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:34:39,494 INFO L87 Difference]: Start difference. First operand 582 states and 899 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:40,256 INFO L93 Difference]: Finished difference Result 1072 states and 1663 transitions. [2024-11-18 20:34:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:34:40,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-18 20:34:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:40,264 INFO L225 Difference]: With dead ends: 1072 [2024-11-18 20:34:40,264 INFO L226 Difference]: Without dead ends: 619 [2024-11-18 20:34:40,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:34:40,267 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 256 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:40,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 734 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:34:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-11-18 20:34:40,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 607. [2024-11-18 20:34:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 441 states have (on average 1.344671201814059) internal successors, (593), 443 states have internal predecessors, (593), 158 states have call successors, (158), 7 states have call predecessors, (158), 7 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) [2024-11-18 20:34:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 909 transitions. [2024-11-18 20:34:40,365 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 909 transitions. Word has length 224 [2024-11-18 20:34:40,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:40,366 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 909 transitions. [2024-11-18 20:34:40,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 909 transitions. [2024-11-18 20:34:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 20:34:40,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:40,370 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:40,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:34:40,371 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:40,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:40,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1309788384, now seen corresponding path program 1 times [2024-11-18 20:34:40,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:40,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684700176] [2024-11-18 20:34:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:40,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 6 proven. 93 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 20:34:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684700176] [2024-11-18 20:34:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684700176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:34:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368416453] [2024-11-18 20:34:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:41,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:34:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:34:41,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:34:41,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 20:34:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:41,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 20:34:41,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:34:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1229 proven. 243 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2024-11-18 20:34:43,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:34:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 114 proven. 174 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2024-11-18 20:34:45,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368416453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 20:34:45,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 20:34:45,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2024-11-18 20:34:45,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931853234] [2024-11-18 20:34:45,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 20:34:45,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 20:34:45,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 20:34:45,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-18 20:34:45,049 INFO L87 Difference]: Start difference. First operand 607 states and 909 transitions. Second operand has 32 states, 31 states have (on average 5.580645161290323) internal successors, (173), 30 states have internal predecessors, (173), 11 states have call successors, (102), 5 states have call predecessors, (102), 11 states have return successors, (102), 11 states have call predecessors, (102), 11 states have call successors, (102) [2024-11-18 20:34:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:51,138 INFO L93 Difference]: Finished difference Result 1765 states and 2607 transitions. [2024-11-18 20:34:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-18 20:34:51,140 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.580645161290323) internal successors, (173), 30 states have internal predecessors, (173), 11 states have call successors, (102), 5 states have call predecessors, (102), 11 states have return successors, (102), 11 states have call predecessors, (102), 11 states have call successors, (102) Word has length 225 [2024-11-18 20:34:51,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:51,152 INFO L225 Difference]: With dead ends: 1765 [2024-11-18 20:34:51,152 INFO L226 Difference]: Without dead ends: 1287 [2024-11-18 20:34:51,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2383, Invalid=8329, Unknown=0, NotChecked=0, Total=10712 [2024-11-18 20:34:51,159 INFO L432 NwaCegarLoop]: 279 mSDtfsCounter, 2167 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 4037 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 4626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 4037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:51,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 2699 Invalid, 4626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 4037 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-18 20:34:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2024-11-18 20:34:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 995. [2024-11-18 20:34:51,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 809 states have (on average 1.3671199011124846) internal successors, (1106), 813 states have internal predecessors, (1106), 162 states have call successors, (162), 23 states have call predecessors, (162), 23 states have return successors, (162), 158 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-18 20:34:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1430 transitions. [2024-11-18 20:34:51,290 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1430 transitions. Word has length 225 [2024-11-18 20:34:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:51,291 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 1430 transitions. [2024-11-18 20:34:51,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.580645161290323) internal successors, (173), 30 states have internal predecessors, (173), 11 states have call successors, (102), 5 states have call predecessors, (102), 11 states have return successors, (102), 11 states have call predecessors, (102), 11 states have call successors, (102) [2024-11-18 20:34:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1430 transitions. [2024-11-18 20:34:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-18 20:34:51,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:51,295 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:51,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 20:34:51,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 20:34:51,500 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:51,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash -752631591, now seen corresponding path program 1 times [2024-11-18 20:34:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:51,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285084853] [2024-11-18 20:34:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:51,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:34:51,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:51,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285084853] [2024-11-18 20:34:51,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285084853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:34:51,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:34:51,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:34:51,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235320286] [2024-11-18 20:34:51,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:34:51,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:34:51,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:51,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:34:51,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:34:51,729 INFO L87 Difference]: Start difference. First operand 995 states and 1430 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:51,992 INFO L93 Difference]: Finished difference Result 1456 states and 2127 transitions. [2024-11-18 20:34:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:34:51,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 225 [2024-11-18 20:34:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:52,003 INFO L225 Difference]: With dead ends: 1456 [2024-11-18 20:34:52,004 INFO L226 Difference]: Without dead ends: 1167 [2024-11-18 20:34:52,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:34:52,006 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 174 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:52,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 659 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:34:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2024-11-18 20:34:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1058. [2024-11-18 20:34:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 872 states have (on average 1.3577981651376148) internal successors, (1184), 876 states have internal predecessors, (1184), 162 states have call successors, (162), 23 states have call predecessors, (162), 23 states have return successors, (162), 158 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-18 20:34:52,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1508 transitions. [2024-11-18 20:34:52,105 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1508 transitions. Word has length 225 [2024-11-18 20:34:52,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:52,106 INFO L471 AbstractCegarLoop]: Abstraction has 1058 states and 1508 transitions. [2024-11-18 20:34:52,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1508 transitions. [2024-11-18 20:34:52,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-18 20:34:52,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:52,111 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:52,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:34:52,111 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:52,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:52,112 INFO L85 PathProgramCache]: Analyzing trace with hash 511810890, now seen corresponding path program 1 times [2024-11-18 20:34:52,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:52,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612108754] [2024-11-18 20:34:52,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:52,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:34:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612108754] [2024-11-18 20:34:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612108754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:34:52,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:34:52,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 20:34:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780151553] [2024-11-18 20:34:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:34:52,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 20:34:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:52,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 20:34:52,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:34:52,535 INFO L87 Difference]: Start difference. First operand 1058 states and 1508 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:53,308 INFO L93 Difference]: Finished difference Result 2722 states and 3937 transitions. [2024-11-18 20:34:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:34:53,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-18 20:34:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:53,319 INFO L225 Difference]: With dead ends: 2722 [2024-11-18 20:34:53,319 INFO L226 Difference]: Without dead ends: 1862 [2024-11-18 20:34:53,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 20:34:53,323 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 344 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:53,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 809 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:34:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2024-11-18 20:34:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1327. [2024-11-18 20:34:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1103 states have (on average 1.386219401631913) internal successors, (1529), 1108 states have internal predecessors, (1529), 196 states have call successors, (196), 27 states have call predecessors, (196), 27 states have return successors, (196), 191 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 20:34:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1921 transitions. [2024-11-18 20:34:53,482 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1921 transitions. Word has length 226 [2024-11-18 20:34:53,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:53,483 INFO L471 AbstractCegarLoop]: Abstraction has 1327 states and 1921 transitions. [2024-11-18 20:34:53,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:34:53,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1921 transitions. [2024-11-18 20:34:53,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-18 20:34:53,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:53,488 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:53,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:34:53,489 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:53,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -509257464, now seen corresponding path program 1 times [2024-11-18 20:34:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497451638] [2024-11-18 20:34:53,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:34:54,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:54,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497451638] [2024-11-18 20:34:54,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497451638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:34:54,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:34:54,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 20:34:54,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319874732] [2024-11-18 20:34:54,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:34:54,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 20:34:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:34:54,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 20:34:54,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:34:54,867 INFO L87 Difference]: Start difference. First operand 1327 states and 1921 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:34:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:34:56,336 INFO L93 Difference]: Finished difference Result 2984 states and 4331 transitions. [2024-11-18 20:34:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:34:56,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 226 [2024-11-18 20:34:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:34:56,347 INFO L225 Difference]: With dead ends: 2984 [2024-11-18 20:34:56,347 INFO L226 Difference]: Without dead ends: 1880 [2024-11-18 20:34:56,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-18 20:34:56,351 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 372 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:34:56,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 870 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 20:34:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2024-11-18 20:34:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1876. [2024-11-18 20:34:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1545 states have (on average 1.3754045307443366) internal successors, (2125), 1553 states have internal predecessors, (2125), 288 states have call successors, (288), 42 states have call predecessors, (288), 42 states have return successors, (288), 280 states have call predecessors, (288), 288 states have call successors, (288) [2024-11-18 20:34:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2701 transitions. [2024-11-18 20:34:56,522 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2701 transitions. Word has length 226 [2024-11-18 20:34:56,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:34:56,523 INFO L471 AbstractCegarLoop]: Abstraction has 1876 states and 2701 transitions. [2024-11-18 20:34:56,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:34:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2701 transitions. [2024-11-18 20:34:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 20:34:56,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:34:56,526 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:34:56,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 20:34:56,527 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:34:56,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:34:56,528 INFO L85 PathProgramCache]: Analyzing trace with hash -942607075, now seen corresponding path program 1 times [2024-11-18 20:34:56,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:34:56,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259872605] [2024-11-18 20:34:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:56,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:34:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 6 proven. 93 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 20:34:57,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:34:57,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259872605] [2024-11-18 20:34:57,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259872605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:34:57,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214633940] [2024-11-18 20:34:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:34:57,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:34:57,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:34:57,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:34:57,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 20:34:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:34:57,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-18 20:34:57,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:34:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1209 proven. 321 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2024-11-18 20:34:59,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:35:11,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214633940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:35:11,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 20:35:11,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 24 [2024-11-18 20:35:11,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752536050] [2024-11-18 20:35:11,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 20:35:11,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 20:35:11,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 20:35:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 20:35:11,130 INFO L87 Difference]: Start difference. First operand 1876 states and 2701 transitions. Second operand has 24 states, 24 states have (on average 5.5) internal successors, (132), 22 states have internal predecessors, (132), 7 states have call successors, (68), 6 states have call predecessors, (68), 9 states have return successors, (68), 7 states have call predecessors, (68), 7 states have call successors, (68) [2024-11-18 20:35:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:14,957 INFO L93 Difference]: Finished difference Result 3697 states and 5313 transitions. [2024-11-18 20:35:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-18 20:35:14,958 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.5) internal successors, (132), 22 states have internal predecessors, (132), 7 states have call successors, (68), 6 states have call predecessors, (68), 9 states have return successors, (68), 7 states have call predecessors, (68), 7 states have call successors, (68) Word has length 227 [2024-11-18 20:35:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:14,967 INFO L225 Difference]: With dead ends: 3697 [2024-11-18 20:35:14,967 INFO L226 Difference]: Without dead ends: 2056 [2024-11-18 20:35:14,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1706, Invalid=4614, Unknown=0, NotChecked=0, Total=6320 [2024-11-18 20:35:14,973 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 735 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:14,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 2101 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 20:35:14,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2024-11-18 20:35:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1871. [2024-11-18 20:35:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1536 states have (on average 1.3678385416666667) internal successors, (2101), 1544 states have internal predecessors, (2101), 288 states have call successors, (288), 46 states have call predecessors, (288), 46 states have return successors, (288), 280 states have call predecessors, (288), 288 states have call successors, (288) [2024-11-18 20:35:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2677 transitions. [2024-11-18 20:35:15,178 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2677 transitions. Word has length 227 [2024-11-18 20:35:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:15,178 INFO L471 AbstractCegarLoop]: Abstraction has 1871 states and 2677 transitions. [2024-11-18 20:35:15,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.5) internal successors, (132), 22 states have internal predecessors, (132), 7 states have call successors, (68), 6 states have call predecessors, (68), 9 states have return successors, (68), 7 states have call predecessors, (68), 7 states have call successors, (68) [2024-11-18 20:35:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2677 transitions. [2024-11-18 20:35:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 20:35:15,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:15,182 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:15,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 20:35:15,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:35:15,383 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:15,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash 666629332, now seen corresponding path program 1 times [2024-11-18 20:35:15,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:15,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843042269] [2024-11-18 20:35:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:15,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:35:16,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:16,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843042269] [2024-11-18 20:35:16,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843042269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:16,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:16,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 20:35:16,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54046516] [2024-11-18 20:35:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:16,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 20:35:16,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 20:35:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-18 20:35:16,287 INFO L87 Difference]: Start difference. First operand 1871 states and 2677 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-18 20:35:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:17,523 INFO L93 Difference]: Finished difference Result 3001 states and 4351 transitions. [2024-11-18 20:35:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:35:17,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 227 [2024-11-18 20:35:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:17,537 INFO L225 Difference]: With dead ends: 3001 [2024-11-18 20:35:17,537 INFO L226 Difference]: Without dead ends: 2529 [2024-11-18 20:35:17,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-18 20:35:17,540 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 463 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:17,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1427 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 20:35:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2024-11-18 20:35:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2459. [2024-11-18 20:35:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2032 states have (on average 1.3858267716535433) internal successors, (2816), 2043 states have internal predecessors, (2816), 368 states have call successors, (368), 58 states have call predecessors, (368), 58 states have return successors, (368), 357 states have call predecessors, (368), 368 states have call successors, (368) [2024-11-18 20:35:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3552 transitions. [2024-11-18 20:35:17,782 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3552 transitions. Word has length 227 [2024-11-18 20:35:17,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:17,782 INFO L471 AbstractCegarLoop]: Abstraction has 2459 states and 3552 transitions. [2024-11-18 20:35:17,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-11-18 20:35:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3552 transitions. [2024-11-18 20:35:17,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 20:35:17,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:17,785 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:17,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 20:35:17,785 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:17,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1778792011, now seen corresponding path program 1 times [2024-11-18 20:35:17,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:17,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980914939] [2024-11-18 20:35:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:17,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:18,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:35:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:18,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980914939] [2024-11-18 20:35:18,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980914939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:18,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:18,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:35:18,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587791586] [2024-11-18 20:35:18,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:18,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:35:18,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:18,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:35:18,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:35:18,135 INFO L87 Difference]: Start difference. First operand 2459 states and 3552 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:35:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:18,697 INFO L93 Difference]: Finished difference Result 3905 states and 5686 transitions. [2024-11-18 20:35:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:35:18,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 227 [2024-11-18 20:35:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:18,709 INFO L225 Difference]: With dead ends: 3905 [2024-11-18 20:35:18,710 INFO L226 Difference]: Without dead ends: 2801 [2024-11-18 20:35:18,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:35:18,713 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 156 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:18,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 576 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:35:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2024-11-18 20:35:18,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2501. [2024-11-18 20:35:18,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2501 states, 2074 states have (on average 1.392960462873674) internal successors, (2889), 2085 states have internal predecessors, (2889), 368 states have call successors, (368), 58 states have call predecessors, (368), 58 states have return successors, (368), 357 states have call predecessors, (368), 368 states have call successors, (368) [2024-11-18 20:35:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3625 transitions. [2024-11-18 20:35:18,971 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3625 transitions. Word has length 227 [2024-11-18 20:35:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:18,972 INFO L471 AbstractCegarLoop]: Abstraction has 2501 states and 3625 transitions. [2024-11-18 20:35:18,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 20:35:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3625 transitions. [2024-11-18 20:35:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 20:35:18,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:18,975 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:18,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 20:35:18,975 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:18,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:18,976 INFO L85 PathProgramCache]: Analyzing trace with hash 757723657, now seen corresponding path program 1 times [2024-11-18 20:35:18,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:18,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427837469] [2024-11-18 20:35:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:18,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 20:35:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427837469] [2024-11-18 20:35:19,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427837469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:35:19,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:35:19,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 20:35:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486653722] [2024-11-18 20:35:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:35:19,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 20:35:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 20:35:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:35:19,343 INFO L87 Difference]: Start difference. First operand 2501 states and 3625 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:35:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:20,204 INFO L93 Difference]: Finished difference Result 5370 states and 7775 transitions. [2024-11-18 20:35:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:35:20,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 227 [2024-11-18 20:35:20,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:20,219 INFO L225 Difference]: With dead ends: 5370 [2024-11-18 20:35:20,219 INFO L226 Difference]: Without dead ends: 3118 [2024-11-18 20:35:20,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-18 20:35:20,224 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 493 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:20,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 987 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 20:35:20,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2024-11-18 20:35:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2912. [2024-11-18 20:35:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2414 states have (on average 1.3864954432477217) internal successors, (3347), 2430 states have internal predecessors, (3347), 426 states have call successors, (426), 71 states have call predecessors, (426), 71 states have return successors, (426), 410 states have call predecessors, (426), 426 states have call successors, (426) [2024-11-18 20:35:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4199 transitions. [2024-11-18 20:35:20,522 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4199 transitions. Word has length 227 [2024-11-18 20:35:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:20,523 INFO L471 AbstractCegarLoop]: Abstraction has 2912 states and 4199 transitions. [2024-11-18 20:35:20,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 20:35:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4199 transitions. [2024-11-18 20:35:20,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 20:35:20,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:20,529 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:20,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 20:35:20,530 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:20,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1437782027, now seen corresponding path program 1 times [2024-11-18 20:35:20,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:20,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855803065] [2024-11-18 20:35:20,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:20,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 6 proven. 93 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-18 20:35:21,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855803065] [2024-11-18 20:35:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855803065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:35:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640004971] [2024-11-18 20:35:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:21,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:35:21,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:35:21,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:35:21,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 20:35:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:21,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 20:35:21,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:35:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 983 proven. 240 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2024-11-18 20:35:23,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:35:23,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640004971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:35:23,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 20:35:23,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2024-11-18 20:35:23,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972881377] [2024-11-18 20:35:23,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 20:35:23,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 20:35:23,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:35:23,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 20:35:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-18 20:35:23,944 INFO L87 Difference]: Start difference. First operand 2912 states and 4199 transitions. Second operand has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 4 states have call successors, (68), 5 states have call predecessors, (68), 8 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2024-11-18 20:35:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:35:29,459 INFO L93 Difference]: Finished difference Result 7432 states and 10497 transitions. [2024-11-18 20:35:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-18 20:35:29,460 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 4 states have call successors, (68), 5 states have call predecessors, (68), 8 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 227 [2024-11-18 20:35:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:35:29,488 INFO L225 Difference]: With dead ends: 7432 [2024-11-18 20:35:29,488 INFO L226 Difference]: Without dead ends: 6133 [2024-11-18 20:35:29,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3867 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2627, Invalid=9583, Unknown=0, NotChecked=0, Total=12210 [2024-11-18 20:35:29,497 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 1221 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:35:29,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 2328 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 20:35:29,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2024-11-18 20:35:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 4172. [2024-11-18 20:35:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4172 states, 3411 states have (on average 1.3658751099384345) internal successors, (4659), 3430 states have internal predecessors, (4659), 624 states have call successors, (624), 136 states have call predecessors, (624), 136 states have return successors, (624), 605 states have call predecessors, (624), 624 states have call successors, (624) [2024-11-18 20:35:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 5907 transitions. [2024-11-18 20:35:30,034 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 5907 transitions. Word has length 227 [2024-11-18 20:35:30,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:35:30,035 INFO L471 AbstractCegarLoop]: Abstraction has 4172 states and 5907 transitions. [2024-11-18 20:35:30,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 4 states have call successors, (68), 5 states have call predecessors, (68), 8 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2024-11-18 20:35:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 5907 transitions. [2024-11-18 20:35:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 20:35:30,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:35:30,039 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 20:35:30,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 20:35:30,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:35:30,240 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:35:30,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:35:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1303768521, now seen corresponding path program 1 times [2024-11-18 20:35:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:35:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710560564] [2024-11-18 20:35:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:35:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 114 proven. 165 refuted. 0 times theorem prover too weak. 1965 trivial. 0 not checked. [2024-11-18 20:35:30,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:35:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710560564] [2024-11-18 20:35:30,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710560564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:35:30,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921577252] [2024-11-18 20:35:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:35:30,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:35:30,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:35:30,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 20:35:30,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 20:35:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:35:31,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 20:35:31,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:35:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1209 proven. 321 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2024-11-18 20:35:33,212 INFO L311 TraceCheckSpWp]: Computing backward predicates...