./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.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_operatoramount_amount250_file-54.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 0cf2f240a207b9fd94ff47176fc66686eff0a1305e9376e15a89fac66684ae53 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:45:00,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:45:00,101 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:45:00,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:45:00,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:45:00,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:45:00,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:45:00,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:45:00,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:45:00,134 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:45:00,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:45:00,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:45:00,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:45:00,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:45:00,136 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:45:00,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:45:00,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:45:00,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:45:00,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:45:00,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:45:00,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:45:00,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:45:00,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:45:00,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:45:00,138 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:45:00,139 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:45:00,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:45:00,139 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:45:00,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:45:00,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:45:00,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:45:00,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:45:00,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:45:00,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:45:00,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:45:00,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:45:00,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:45:00,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:45:00,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:45:00,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:45:00,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:45:00,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:45:00,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cf2f240a207b9fd94ff47176fc66686eff0a1305e9376e15a89fac66684ae53 [2024-11-18 23:45:00,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:45:00,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:45:00,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:45:00,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:45:00,382 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:45:00,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i [2024-11-18 23:45:01,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:45:01,941 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:45:01,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-54.i [2024-11-18 23:45:01,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0385f228/44350a12133a492b9b2b4ec63351b3f6/FLAG7d4eb7861 [2024-11-18 23:45:02,287 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0385f228/44350a12133a492b9b2b4ec63351b3f6 [2024-11-18 23:45:02,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:45:02,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:45:02,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:45:02,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:45:02,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:45:02,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73499876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02, skipping insertion in model container [2024-11-18 23:45:02,305 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:45:02,461 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_operatoramount_amount250_file-54.i[916,929] [2024-11-18 23:45:02,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:45:02,615 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:45:02,624 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_operatoramount_amount250_file-54.i[916,929] [2024-11-18 23:45:02,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:45:02,719 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:45:02,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02 WrapperNode [2024-11-18 23:45:02,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:45:02,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:45:02,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:45:02,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:45:02,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,810 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2024-11-18 23:45:02,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:45:02,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:45:02,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:45:02,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:45:02,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,837 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,887 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 23:45:02,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,921 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,971 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:45:02,976 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:45:02,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:45:02,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:45:02,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (1/1) ... [2024-11-18 23:45:02,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:45:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:03,005 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 23:45:03,010 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 23:45:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:45:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:45:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:45:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:45:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:45:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:45:03,123 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:45:03,124 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:45:03,815 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-18 23:45:03,816 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:45:03,833 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:45:03,835 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:45:03,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:45:03 BoogieIcfgContainer [2024-11-18 23:45:03,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:45:03,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:45:03,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:45:03,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:45:03,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:45:02" (1/3) ... [2024-11-18 23:45:03,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1363e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:45:03, skipping insertion in model container [2024-11-18 23:45:03,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:02" (2/3) ... [2024-11-18 23:45:03,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1363e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:45:03, skipping insertion in model container [2024-11-18 23:45:03,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:45:03" (3/3) ... [2024-11-18 23:45:03,842 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-54.i [2024-11-18 23:45:03,855 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:45:03,855 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:45:03,926 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:45:03,934 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;@184915e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:45:03,934 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:45:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 113 states have (on average 1.4955752212389382) internal successors, (169), 114 states have internal predecessors, (169), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 23:45:03,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-18 23:45:03,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:03,957 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:03,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:03,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:03,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1620481780, now seen corresponding path program 1 times [2024-11-18 23:45:03,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279543146] [2024-11-18 23:45:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2024-11-18 23:45:04,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:04,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279543146] [2024-11-18 23:45:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279543146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169679372] [2024-11-18 23:45:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:04,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:04,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:04,449 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 23:45:04,451 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 23:45:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:04,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:45:04,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2024-11-18 23:45:04,782 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:45:04,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169679372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:04,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:45:04,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:45:04,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939871679] [2024-11-18 23:45:04,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:04,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:45:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:04,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:45:04,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:45:04,814 INFO L87 Difference]: Start difference. First operand has 182 states, 113 states have (on average 1.4955752212389382) internal successors, (169), 114 states have internal predecessors, (169), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2024-11-18 23:45:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:04,849 INFO L93 Difference]: Finished difference Result 357 states and 662 transitions. [2024-11-18 23:45:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:45:04,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) Word has length 403 [2024-11-18 23:45:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:04,857 INFO L225 Difference]: With dead ends: 357 [2024-11-18 23:45:04,858 INFO L226 Difference]: Without dead ends: 178 [2024-11-18 23:45:04,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 404 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 23:45:04,865 INFO L432 NwaCegarLoop]: 293 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, 293 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 23:45:04,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:45:04,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-18 23:45:04,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-18 23:45:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 110 states have (on average 1.4636363636363636) internal successors, (161), 110 states have internal predecessors, (161), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 23:45:04,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 293 transitions. [2024-11-18 23:45:04,912 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 293 transitions. Word has length 403 [2024-11-18 23:45:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:04,913 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 293 transitions. [2024-11-18 23:45:04,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 2 states have call successors, (66) [2024-11-18 23:45:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 293 transitions. [2024-11-18 23:45:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-18 23:45:04,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:04,920 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:04,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:45:05,121 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 23:45:05,122 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:05,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1025857852, now seen corresponding path program 1 times [2024-11-18 23:45:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:05,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087739912] [2024-11-18 23:45:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:05,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-18 23:45:05,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:05,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087739912] [2024-11-18 23:45:05,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087739912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:05,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:05,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:45:05,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10758725] [2024-11-18 23:45:05,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:05,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:45:05,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:45:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:45:05,410 INFO L87 Difference]: Start difference. First operand 178 states and 293 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2024-11-18 23:45:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:05,500 INFO L93 Difference]: Finished difference Result 436 states and 718 transitions. [2024-11-18 23:45:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:45:05,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 403 [2024-11-18 23:45:05,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:05,505 INFO L225 Difference]: With dead ends: 436 [2024-11-18 23:45:05,505 INFO L226 Difference]: Without dead ends: 261 [2024-11-18 23:45:05,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:45:05,506 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 135 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:05,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 574 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:45:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-18 23:45:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2024-11-18 23:45:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 175 states have (on average 1.497142857142857) internal successors, (262), 176 states have internal predecessors, (262), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 23:45:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 422 transitions. [2024-11-18 23:45:05,529 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 422 transitions. Word has length 403 [2024-11-18 23:45:05,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:05,530 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 422 transitions. [2024-11-18 23:45:05,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2024-11-18 23:45:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 422 transitions. [2024-11-18 23:45:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-18 23:45:05,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:05,535 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:05,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:45:05,535 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:05,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:05,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2117375696, now seen corresponding path program 1 times [2024-11-18 23:45:05,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:05,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950897902] [2024-11-18 23:45:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:05,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 6 proven. 189 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2024-11-18 23:45:07,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950897902] [2024-11-18 23:45:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950897902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555058237] [2024-11-18 23:45:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:07,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:07,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:07,123 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 23:45:07,128 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 23:45:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:07,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:45:07,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 573 proven. 189 refuted. 0 times theorem prover too weak. 7818 trivial. 0 not checked. [2024-11-18 23:45:08,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:45:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 6 proven. 189 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2024-11-18 23:45:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555058237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:45:08,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:45:08,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 23:45:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678743429] [2024-11-18 23:45:08,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:45:08,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:45:08,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:08,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:45:08,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:45:08,649 INFO L87 Difference]: Start difference. First operand 258 states and 422 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 3 states have call predecessors, (193), 3 states have call successors, (193) [2024-11-18 23:45:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:09,132 INFO L93 Difference]: Finished difference Result 525 states and 851 transitions. [2024-11-18 23:45:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:45:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 3 states have call predecessors, (193), 3 states have call successors, (193) Word has length 404 [2024-11-18 23:45:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:09,141 INFO L225 Difference]: With dead ends: 525 [2024-11-18 23:45:09,141 INFO L226 Difference]: Without dead ends: 270 [2024-11-18 23:45:09,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:45:09,143 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 330 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:09,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 463 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:45:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-18 23:45:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2024-11-18 23:45:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 181 states have (on average 1.4364640883977902) internal successors, (260), 182 states have internal predecessors, (260), 80 states have call successors, (80), 4 states have call predecessors, (80), 4 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 23:45:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 420 transitions. [2024-11-18 23:45:09,179 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 420 transitions. Word has length 404 [2024-11-18 23:45:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:09,180 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 420 transitions. [2024-11-18 23:45:09,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 3 states have call predecessors, (193), 3 states have call successors, (193) [2024-11-18 23:45:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 420 transitions. [2024-11-18 23:45:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-18 23:45:09,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:09,185 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:09,201 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 23:45:09,385 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,SelfDestructingSolverStorable2 [2024-11-18 23:45:09,386 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:09,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash -400105180, now seen corresponding path program 1 times [2024-11-18 23:45:09,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:09,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758256272] [2024-11-18 23:45:09,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:09,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 150 proven. 234 refuted. 0 times theorem prover too weak. 8196 trivial. 0 not checked. [2024-11-18 23:45:11,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:11,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758256272] [2024-11-18 23:45:11,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758256272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:11,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643743369] [2024-11-18 23:45:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:11,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:11,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:11,664 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 23:45:11,667 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 23:45:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:11,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 23:45:11,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2006 proven. 342 refuted. 0 times theorem prover too weak. 6232 trivial. 0 not checked. [2024-11-18 23:45:12,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:45:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 42 proven. 345 refuted. 0 times theorem prover too weak. 8193 trivial. 0 not checked. [2024-11-18 23:45:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643743369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:45:14,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:45:14,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 21 [2024-11-18 23:45:14,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284045194] [2024-11-18 23:45:14,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:45:14,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 23:45:14,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 23:45:14,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:45:14,332 INFO L87 Difference]: Start difference. First operand 266 states and 420 transitions. Second operand has 21 states, 21 states have (on average 9.714285714285714) internal successors, (204), 21 states have internal predecessors, (204), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) [2024-11-18 23:45:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:17,929 INFO L93 Difference]: Finished difference Result 744 states and 1147 transitions. [2024-11-18 23:45:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 23:45:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.714285714285714) internal successors, (204), 21 states have internal predecessors, (204), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) Word has length 405 [2024-11-18 23:45:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:17,932 INFO L225 Difference]: With dead ends: 744 [2024-11-18 23:45:17,932 INFO L226 Difference]: Without dead ends: 481 [2024-11-18 23:45:17,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 23:45:17,935 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 1275 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:17,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 1255 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 23:45:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-18 23:45:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 403. [2024-11-18 23:45:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 300 states have (on average 1.4166666666666667) internal successors, (425), 303 states have internal predecessors, (425), 88 states have call successors, (88), 14 states have call predecessors, (88), 14 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-18 23:45:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 601 transitions. [2024-11-18 23:45:17,996 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 601 transitions. Word has length 405 [2024-11-18 23:45:17,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:17,998 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 601 transitions. [2024-11-18 23:45:17,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.714285714285714) internal successors, (204), 21 states have internal predecessors, (204), 7 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) [2024-11-18 23:45:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 601 transitions. [2024-11-18 23:45:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-18 23:45:18,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:18,002 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:18,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 23:45:18,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:18,203 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:18,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1642551972, now seen corresponding path program 1 times [2024-11-18 23:45:18,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:18,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000756215] [2024-11-18 23:45:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 492 proven. 252 refuted. 0 times theorem prover too weak. 7836 trivial. 0 not checked. [2024-11-18 23:45:20,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:20,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000756215] [2024-11-18 23:45:20,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000756215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:20,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039116768] [2024-11-18 23:45:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:20,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:20,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:20,963 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 23:45:20,964 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 23:45:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:21,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 23:45:21,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5527 proven. 333 refuted. 0 times theorem prover too weak. 2720 trivial. 0 not checked. [2024-11-18 23:45:23,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:45:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 429 proven. 147 refuted. 0 times theorem prover too weak. 8004 trivial. 0 not checked. [2024-11-18 23:45:25,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039116768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:45:25,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:45:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 12] total 31 [2024-11-18 23:45:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622755703] [2024-11-18 23:45:25,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:45:25,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 23:45:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 23:45:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2024-11-18 23:45:25,627 INFO L87 Difference]: Start difference. First operand 403 states and 601 transitions. Second operand has 31 states, 30 states have (on average 5.9) internal successors, (177), 28 states have internal predecessors, (177), 11 states have call successors, (144), 6 states have call predecessors, (144), 12 states have return successors, (145), 11 states have call predecessors, (145), 11 states have call successors, (145) [2024-11-18 23:45:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:31,509 INFO L93 Difference]: Finished difference Result 1432 states and 2059 transitions. [2024-11-18 23:45:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-18 23:45:31,509 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.9) internal successors, (177), 28 states have internal predecessors, (177), 11 states have call successors, (144), 6 states have call predecessors, (144), 12 states have return successors, (145), 11 states have call predecessors, (145), 11 states have call successors, (145) Word has length 405 [2024-11-18 23:45:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:31,516 INFO L225 Difference]: With dead ends: 1432 [2024-11-18 23:45:31,517 INFO L226 Difference]: Without dead ends: 1032 [2024-11-18 23:45:31,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 801 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4700 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2946, Invalid=9710, Unknown=0, NotChecked=0, Total=12656 [2024-11-18 23:45:31,521 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 1580 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 1126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1126 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:31,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1659 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1126 Valid, 1936 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-18 23:45:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-11-18 23:45:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 950. [2024-11-18 23:45:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 630 states have (on average 1.2968253968253969) internal successors, (817), 636 states have internal predecessors, (817), 264 states have call successors, (264), 55 states have call predecessors, (264), 55 states have return successors, (264), 258 states have call predecessors, (264), 264 states have call successors, (264) [2024-11-18 23:45:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1345 transitions. [2024-11-18 23:45:31,693 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1345 transitions. Word has length 405 [2024-11-18 23:45:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:31,694 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1345 transitions. [2024-11-18 23:45:31,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.9) internal successors, (177), 28 states have internal predecessors, (177), 11 states have call successors, (144), 6 states have call predecessors, (144), 12 states have return successors, (145), 11 states have call predecessors, (145), 11 states have call successors, (145) [2024-11-18 23:45:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1345 transitions. [2024-11-18 23:45:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-18 23:45:31,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:31,696 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:31,714 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 23:45:31,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:31,897 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:31,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:31,898 INFO L85 PathProgramCache]: Analyzing trace with hash 244513188, now seen corresponding path program 1 times [2024-11-18 23:45:31,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:31,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130072424] [2024-11-18 23:45:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:31,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 264 proven. 303 refuted. 0 times theorem prover too weak. 8013 trivial. 0 not checked. [2024-11-18 23:45:34,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130072424] [2024-11-18 23:45:34,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130072424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822568669] [2024-11-18 23:45:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:34,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:34,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:34,808 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 23:45:34,809 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 23:45:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:35,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-18 23:45:35,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5018 proven. 327 refuted. 0 times theorem prover too weak. 3235 trivial. 0 not checked. [2024-11-18 23:45:36,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:45:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 417 proven. 345 refuted. 0 times theorem prover too weak. 7818 trivial. 0 not checked. [2024-11-18 23:45:37,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822568669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:45:37,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:45:37,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 39 [2024-11-18 23:45:37,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024181204] [2024-11-18 23:45:37,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:45:37,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 23:45:37,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 23:45:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1239, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 23:45:37,695 INFO L87 Difference]: Start difference. First operand 950 states and 1345 transitions. Second operand has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 14 states have call successors, (171), 5 states have call predecessors, (171), 12 states have return successors, (172), 14 states have call predecessors, (172), 14 states have call successors, (172) [2024-11-18 23:45:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:49,525 INFO L93 Difference]: Finished difference Result 4304 states and 6089 transitions. [2024-11-18 23:45:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-18 23:45:49,526 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 14 states have call successors, (171), 5 states have call predecessors, (171), 12 states have return successors, (172), 14 states have call predecessors, (172), 14 states have call successors, (172) Word has length 405 [2024-11-18 23:45:49,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:49,539 INFO L225 Difference]: With dead ends: 4304 [2024-11-18 23:45:49,540 INFO L226 Difference]: Without dead ends: 3409 [2024-11-18 23:45:49,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 998 GetRequests, 812 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13534 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=6300, Invalid=28482, Unknown=0, NotChecked=0, Total=34782 [2024-11-18 23:45:49,549 INFO L432 NwaCegarLoop]: 448 mSDtfsCounter, 2466 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 5253 mSolverCounterSat, 1944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 5699 SdHoareTripleChecker+Invalid, 7197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1944 IncrementalHoareTripleChecker+Valid, 5253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:49,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2492 Valid, 5699 Invalid, 7197 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1944 Valid, 5253 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-18 23:45:49,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2024-11-18 23:45:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 1906. [2024-11-18 23:45:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1275 states have (on average 1.2854901960784313) internal successors, (1639), 1286 states have internal predecessors, (1639), 504 states have call successors, (504), 126 states have call predecessors, (504), 126 states have return successors, (504), 493 states have call predecessors, (504), 504 states have call successors, (504) [2024-11-18 23:45:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2647 transitions. [2024-11-18 23:45:49,829 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2647 transitions. Word has length 405 [2024-11-18 23:45:49,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:49,831 INFO L471 AbstractCegarLoop]: Abstraction has 1906 states and 2647 transitions. [2024-11-18 23:45:49,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.153846153846154) internal successors, (201), 38 states have internal predecessors, (201), 14 states have call successors, (171), 5 states have call predecessors, (171), 12 states have return successors, (172), 14 states have call predecessors, (172), 14 states have call successors, (172) [2024-11-18 23:45:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2647 transitions. [2024-11-18 23:45:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-18 23:45:49,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:49,835 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:49,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 23:45:50,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:50,059 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:50,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash -391419604, now seen corresponding path program 1 times [2024-11-18 23:45:50,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:50,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69412456] [2024-11-18 23:45:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:50,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 252 proven. 132 refuted. 0 times theorem prover too weak. 8196 trivial. 0 not checked. [2024-11-18 23:45:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69412456] [2024-11-18 23:45:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69412456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:51,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719670828] [2024-11-18 23:45:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:51,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:51,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:51,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:45:51,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 23:45:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:51,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-18 23:45:51,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 5329 proven. 339 refuted. 0 times theorem prover too weak. 2912 trivial. 0 not checked. [2024-11-18 23:45:53,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:45:53,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719670828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:53,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:45:53,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20] total 24 [2024-11-18 23:45:53,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015628358] [2024-11-18 23:45:53,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:45:53,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 23:45:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:53,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 23:45:53,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-11-18 23:45:53,865 INFO L87 Difference]: Start difference. First operand 1906 states and 2647 transitions. Second operand has 24 states, 24 states have (on average 5.958333333333333) internal successors, (143), 23 states have internal predecessors, (143), 7 states have call successors, (105), 6 states have call predecessors, (105), 9 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-18 23:45:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:55,992 INFO L93 Difference]: Finished difference Result 4673 states and 6463 transitions. [2024-11-18 23:45:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 23:45:55,993 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.958333333333333) internal successors, (143), 23 states have internal predecessors, (143), 7 states have call successors, (105), 6 states have call predecessors, (105), 9 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) Word has length 406 [2024-11-18 23:45:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:56,004 INFO L225 Difference]: With dead ends: 4673 [2024-11-18 23:45:56,004 INFO L226 Difference]: Without dead ends: 2830 [2024-11-18 23:45:56,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 23:45:56,009 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 693 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:56,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1476 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 23:45:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2024-11-18 23:45:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2666. [2024-11-18 23:45:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 1843 states have (on average 1.3125339120998372) internal successors, (2419), 1862 states have internal predecessors, (2419), 656 states have call successors, (656), 166 states have call predecessors, (656), 166 states have return successors, (656), 637 states have call predecessors, (656), 656 states have call successors, (656) [2024-11-18 23:45:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3731 transitions. [2024-11-18 23:45:56,379 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3731 transitions. Word has length 406 [2024-11-18 23:45:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:56,381 INFO L471 AbstractCegarLoop]: Abstraction has 2666 states and 3731 transitions. [2024-11-18 23:45:56,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.958333333333333) internal successors, (143), 23 states have internal predecessors, (143), 7 states have call successors, (105), 6 states have call predecessors, (105), 9 states have return successors, (105), 7 states have call predecessors, (105), 7 states have call successors, (105) [2024-11-18 23:45:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3731 transitions. [2024-11-18 23:45:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-18 23:45:56,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:56,389 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:56,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 23:45:56,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:56,594 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:56,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:56,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1209068054, now seen corresponding path program 1 times [2024-11-18 23:45:56,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:56,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336366219] [2024-11-18 23:45:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:56,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:45:57,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565761775] [2024-11-18 23:45:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:57,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:57,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:57,346 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:45:57,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 23:45:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:57,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-18 23:45:57,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:46:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2169 proven. 927 refuted. 0 times theorem prover too weak. 5484 trivial. 0 not checked. [2024-11-18 23:46:01,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:46:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 30 proven. 165 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2024-11-18 23:46:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336366219] [2024-11-18 23:46:02,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:46:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565761775] [2024-11-18 23:46:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565761775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:46:02,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:46:02,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 29 [2024-11-18 23:46:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403615529] [2024-11-18 23:46:02,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:46:02,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-18 23:46:02,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:02,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-18 23:46:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2024-11-18 23:46:02,779 INFO L87 Difference]: Start difference. First operand 2666 states and 3731 transitions. Second operand has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 27 states have internal predecessors, (157), 7 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) [2024-11-18 23:46:08,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:08,656 INFO L93 Difference]: Finished difference Result 6834 states and 9572 transitions. [2024-11-18 23:46:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-18 23:46:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 27 states have internal predecessors, (157), 7 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) Word has length 406 [2024-11-18 23:46:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:08,686 INFO L225 Difference]: With dead ends: 6834 [2024-11-18 23:46:08,687 INFO L226 Difference]: Without dead ends: 4223 [2024-11-18 23:46:08,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=742, Invalid=2338, Unknown=0, NotChecked=0, Total=3080 [2024-11-18 23:46:08,700 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 1226 mSDsluCounter, 3865 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 4230 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:08,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 4230 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-18 23:46:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2024-11-18 23:46:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3421. [2024-11-18 23:46:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 2580 states have (on average 1.3496124031007752) internal successors, (3482), 2611 states have internal predecessors, (3482), 626 states have call successors, (626), 214 states have call predecessors, (626), 214 states have return successors, (626), 595 states have call predecessors, (626), 626 states have call successors, (626) [2024-11-18 23:46:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 4734 transitions. [2024-11-18 23:46:09,217 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 4734 transitions. Word has length 406 [2024-11-18 23:46:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:09,222 INFO L471 AbstractCegarLoop]: Abstraction has 3421 states and 4734 transitions. [2024-11-18 23:46:09,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 27 states have internal predecessors, (157), 7 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 7 states have call predecessors, (132), 7 states have call successors, (132) [2024-11-18 23:46:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 4734 transitions. [2024-11-18 23:46:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-18 23:46:09,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:09,228 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:09,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 23:46:09,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:46:09,429 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:09,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1046462972, now seen corresponding path program 1 times [2024-11-18 23:46:09,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:09,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356107559] [2024-11-18 23:46:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:09,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:46:10,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561923166] [2024-11-18 23:46:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:10,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:46:10,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:46:10,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:46:10,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 23:46:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:10,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 23:46:10,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:46:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4333 proven. 405 refuted. 0 times theorem prover too weak. 3842 trivial. 0 not checked. [2024-11-18 23:46:13,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:46:17,611 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~var_1_26~0 256)) (.cse1 (mod c_~last_1_var_1_61~0 4294967296)) (.cse3 (mod c_~var_1_22~0 4294967296))) (and (forall ((v_y_173 Int) (v_z_175 Int)) (let ((.cse2 (* v_y_173 4294967296)) (.cse0 (div v_z_175 .cse4))) (or (< .cse0 (+ .cse1 .cse2)) (< 255 v_z_175) (< (+ 4294967295 .cse2) .cse0) (< v_z_175 .cse3)))) (or (< (div .cse3 .cse4) (+ (* 4294967296 (div .cse3 .cse4 4294967296)) .cse1)) (< .cse3 1)))) is different from false [2024-11-18 23:46:18,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:18,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356107559] [2024-11-18 23:46:18,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:46:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561923166] [2024-11-18 23:46:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561923166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:46:18,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:46:18,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-18 23:46:18,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732656472] [2024-11-18 23:46:18,247 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 23:46:18,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:46:18,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:18,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:46:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=158, Unknown=1, NotChecked=26, Total=240 [2024-11-18 23:46:18,248 INFO L87 Difference]: Start difference. First operand 3421 states and 4734 transitions. Second operand has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 12 states have internal predecessors, (95), 4 states have call successors, (66), 4 states have call predecessors, (66), 6 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2024-11-18 23:46:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:24,364 INFO L93 Difference]: Finished difference Result 7345 states and 10220 transitions. [2024-11-18 23:46:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 23:46:24,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 12 states have internal predecessors, (95), 4 states have call successors, (66), 4 states have call predecessors, (66), 6 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 407 [2024-11-18 23:46:24,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:24,382 INFO L225 Difference]: With dead ends: 7345 [2024-11-18 23:46:24,383 INFO L226 Difference]: Without dead ends: 3995 [2024-11-18 23:46:24,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=237, Invalid=636, Unknown=1, NotChecked=56, Total=930 [2024-11-18 23:46:24,394 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 300 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 208 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:24,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1986 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1185 Invalid, 5 Unknown, 0 Unchecked, 4.8s Time] [2024-11-18 23:46:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-18 23:46:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3556. [2024-11-18 23:46:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 2659 states have (on average 1.341481760060173) internal successors, (3567), 2689 states have internal predecessors, (3567), 668 states have call successors, (668), 228 states have call predecessors, (668), 228 states have return successors, (668), 638 states have call predecessors, (668), 668 states have call successors, (668) [2024-11-18 23:46:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 4903 transitions. [2024-11-18 23:46:24,875 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 4903 transitions. Word has length 407 [2024-11-18 23:46:24,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:24,876 INFO L471 AbstractCegarLoop]: Abstraction has 3556 states and 4903 transitions. [2024-11-18 23:46:24,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.785714285714286) internal successors, (95), 12 states have internal predecessors, (95), 4 states have call successors, (66), 4 states have call predecessors, (66), 6 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2024-11-18 23:46:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 4903 transitions. [2024-11-18 23:46:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-18 23:46:24,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:24,879 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:24,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 23:46:25,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-18 23:46:25,080 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:25,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash -49302221, now seen corresponding path program 1 times [2024-11-18 23:46:25,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:25,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906835080] [2024-11-18 23:46:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:25,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:46:25,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046290202] [2024-11-18 23:46:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:25,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:46:25,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:46:25,770 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:46:25,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 23:46:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-18 23:46:26,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.