./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.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 5208e97c947824349dcc8cb32160d4052cba683a795fae400d45ff0b27a23a25 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 11:42:15,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 11:42:15,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 11:42:15,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 11:42:15,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 11:42:15,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 11:42:15,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 11:42:15,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 11:42:15,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 11:42:15,086 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 11:42:15,086 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 11:42:15,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 11:42:15,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 11:42:15,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 11:42:15,087 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 11:42:15,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 11:42:15,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 11:42:15,088 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 11:42:15,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 11:42:15,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 11:42:15,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 11:42:15,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 11:42:15,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 11:42:15,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 11:42:15,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 11:42:15,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 11:42:15,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 11:42:15,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 11:42:15,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 11:42:15,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 11:42:15,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 11:42:15,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 11:42:15,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:42:15,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 11:42:15,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 11:42:15,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 11:42:15,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 11:42:15,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 11:42:15,094 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 11:42:15,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 11:42:15,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 11:42:15,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 11:42:15,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5208e97c947824349dcc8cb32160d4052cba683a795fae400d45ff0b27a23a25 [2024-11-22 11:42:15,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 11:42:15,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 11:42:15,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 11:42:15,300 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 11:42:15,300 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 11:42:15,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i [2024-11-22 11:42:16,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 11:42:16,780 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 11:42:16,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i [2024-11-22 11:42:16,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43e94681b/595fcf41d9ce46feb33f5c3a6f2950ff/FLAGf8c99fc8a [2024-11-22 11:42:16,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43e94681b/595fcf41d9ce46feb33f5c3a6f2950ff [2024-11-22 11:42:16,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 11:42:16,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 11:42:16,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 11:42:16,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 11:42:16,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 11:42:16,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3989ea8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:16, skipping insertion in model container [2024-11-22 11:42:16,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:42:16" (1/1) ... [2024-11-22 11:42:16,860 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 11:42:17,016 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-55.i[916,929] [2024-11-22 11:42:17,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:42:17,122 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 11:42:17,131 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-55.i[916,929] [2024-11-22 11:42:17,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 11:42:17,262 INFO L204 MainTranslator]: Completed translation [2024-11-22 11:42:17,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17 WrapperNode [2024-11-22 11:42:17,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 11:42:17,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 11:42:17,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 11:42:17,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 11:42:17,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,336 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 487 [2024-11-22 11:42:17,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 11:42:17,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 11:42:17,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 11:42:17,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 11:42:17,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,357 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,398 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]. [2024-11-22 11:42:17,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,415 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 11:42:17,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 11:42:17,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 11:42:17,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 11:42:17,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (1/1) ... [2024-11-22 11:42:17,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 11:42:17,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:17,478 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) [2024-11-22 11:42:17,480 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 [2024-11-22 11:42:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 11:42:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 11:42:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 11:42:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 11:42:17,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 11:42:17,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 11:42:17,626 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 11:42:17,628 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 11:42:18,241 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-22 11:42:18,241 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 11:42:18,261 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 11:42:18,262 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 11:42:18,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:42:18 BoogieIcfgContainer [2024-11-22 11:42:18,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 11:42:18,264 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 11:42:18,264 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 11:42:18,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 11:42:18,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:42:16" (1/3) ... [2024-11-22 11:42:18,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7885acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:42:18, skipping insertion in model container [2024-11-22 11:42:18,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:42:17" (2/3) ... [2024-11-22 11:42:18,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7885acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:42:18, skipping insertion in model container [2024-11-22 11:42:18,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:42:18" (3/3) ... [2024-11-22 11:42:18,268 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-55.i [2024-11-22 11:42:18,288 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 11:42:18,288 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 11:42:18,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 11:42:18,353 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;@3e09273e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 11:42:18,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 11:42:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 132 states have (on average 1.4696969696969697) internal successors, (194), 133 states have internal predecessors, (194), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-22 11:42:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-22 11:42:18,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:18,393 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:18,394 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:18,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1138444434, now seen corresponding path program 1 times [2024-11-22 11:42:18,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:18,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815050592] [2024-11-22 11:42:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:18,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-22 11:42:18,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815050592] [2024-11-22 11:42:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815050592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:18,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329161691] [2024-11-22 11:42:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:18,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:18,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:18,853 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) [2024-11-22 11:42:18,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 11:42:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:19,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 11:42:19,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-22 11:42:19,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 11:42:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329161691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:42:19,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:42:19,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 11:42:19,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742321302] [2024-11-22 11:42:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:42:19,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 11:42:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 11:42:19,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:42:19,268 INFO L87 Difference]: Start difference. First operand has 196 states, 132 states have (on average 1.4696969696969697) internal successors, (194), 133 states have internal predecessors, (194), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-22 11:42:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:19,303 INFO L93 Difference]: Finished difference Result 384 states and 685 transitions. [2024-11-22 11:42:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 11:42:19,305 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 388 [2024-11-22 11:42:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:19,312 INFO L225 Difference]: With dead ends: 384 [2024-11-22 11:42:19,313 INFO L226 Difference]: Without dead ends: 191 [2024-11-22 11:42:19,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 11:42:19,319 INFO L432 NwaCegarLoop]: 305 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, 305 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 [2024-11-22 11:42:19,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 11:42:19,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-22 11:42:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-11-22 11:42:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 128 states have (on average 1.4296875) internal successors, (183), 128 states have internal predecessors, (183), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-22 11:42:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 305 transitions. [2024-11-22 11:42:19,383 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 305 transitions. Word has length 388 [2024-11-22 11:42:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:19,383 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 305 transitions. [2024-11-22 11:42:19,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-22 11:42:19,384 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 305 transitions. [2024-11-22 11:42:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-22 11:42:19,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:19,390 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:19,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 11:42:19,594 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 [2024-11-22 11:42:19,595 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:19,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1402356390, now seen corresponding path program 1 times [2024-11-22 11:42:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:19,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971348439] [2024-11-22 11:42:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:19,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:42:19,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971348439] [2024-11-22 11:42:19,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971348439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:42:19,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:42:19,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 11:42:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409400579] [2024-11-22 11:42:19,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:42:19,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 11:42:19,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 11:42:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 11:42:19,917 INFO L87 Difference]: Start difference. First operand 191 states and 305 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:42:20,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:20,053 INFO L93 Difference]: Finished difference Result 559 states and 894 transitions. [2024-11-22 11:42:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 11:42:20,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 388 [2024-11-22 11:42:20,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:20,062 INFO L225 Difference]: With dead ends: 559 [2024-11-22 11:42:20,063 INFO L226 Difference]: Without dead ends: 371 [2024-11-22 11:42:20,065 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 [2024-11-22 11:42:20,068 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 271 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:20,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 782 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 11:42:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-22 11:42:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 224. [2024-11-22 11:42:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 161 states have (on average 1.4161490683229814) internal successors, (228), 161 states have internal predecessors, (228), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-22 11:42:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 350 transitions. [2024-11-22 11:42:20,095 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 350 transitions. Word has length 388 [2024-11-22 11:42:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:20,101 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 350 transitions. [2024-11-22 11:42:20,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-22 11:42:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 350 transitions. [2024-11-22 11:42:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-22 11:42:20,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:20,105 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:20,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 11:42:20,105 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:20,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1057951842, now seen corresponding path program 1 times [2024-11-22 11:42:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:20,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780446476] [2024-11-22 11:42:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:20,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-22 11:42:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780446476] [2024-11-22 11:42:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780446476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 11:42:20,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 11:42:20,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 11:42:20,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946865939] [2024-11-22 11:42:20,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 11:42:20,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 11:42:20,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:20,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 11:42:20,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 11:42:20,525 INFO L87 Difference]: Start difference. First operand 224 states and 350 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-22 11:42:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:20,915 INFO L93 Difference]: Finished difference Result 756 states and 1178 transitions. [2024-11-22 11:42:20,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 11:42:20,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 388 [2024-11-22 11:42:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:20,919 INFO L225 Difference]: With dead ends: 756 [2024-11-22 11:42:20,919 INFO L226 Difference]: Without dead ends: 535 [2024-11-22 11:42:20,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:42:20,921 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 480 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:20,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1340 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 11:42:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-22 11:42:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 443. [2024-11-22 11:42:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 318 states have (on average 1.4182389937106918) internal successors, (451), 318 states have internal predecessors, (451), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-22 11:42:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 695 transitions. [2024-11-22 11:42:20,965 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 695 transitions. Word has length 388 [2024-11-22 11:42:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:20,966 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 695 transitions. [2024-11-22 11:42:20,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-22 11:42:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 695 transitions. [2024-11-22 11:42:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-22 11:42:20,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:20,973 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:20,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 11:42:20,973 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:20,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:20,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1201389713, now seen corresponding path program 1 times [2024-11-22 11:42:20,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:20,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678635549] [2024-11-22 11:42:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:20,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 171 proven. 9 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-22 11:42:22,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678635549] [2024-11-22 11:42:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678635549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:22,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987634090] [2024-11-22 11:42:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:22,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:22,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:22,019 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) [2024-11-22 11:42:22,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 11:42:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:22,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 11:42:22,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 858 proven. 9 refuted. 0 times theorem prover too weak. 6453 trivial. 0 not checked. [2024-11-22 11:42:22,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 171 proven. 9 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-22 11:42:22,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987634090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:22,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:22,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-22 11:42:22,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652229247] [2024-11-22 11:42:22,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:22,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 11:42:22,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 11:42:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-22 11:42:22,632 INFO L87 Difference]: Start difference. First operand 443 states and 695 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-22 11:42:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:23,321 INFO L93 Difference]: Finished difference Result 952 states and 1480 transitions. [2024-11-22 11:42:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 11:42:23,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 389 [2024-11-22 11:42:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:23,325 INFO L225 Difference]: With dead ends: 952 [2024-11-22 11:42:23,325 INFO L226 Difference]: Without dead ends: 512 [2024-11-22 11:42:23,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 774 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-22 11:42:23,327 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 256 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:23,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1180 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 11:42:23,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-22 11:42:23,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2024-11-22 11:42:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 295 states have (on average 1.2813559322033898) internal successors, (378), 296 states have internal predecessors, (378), 183 states have call successors, (183), 6 states have call predecessors, (183), 6 states have return successors, (183), 182 states have call predecessors, (183), 183 states have call successors, (183) [2024-11-22 11:42:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 744 transitions. [2024-11-22 11:42:23,373 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 744 transitions. Word has length 389 [2024-11-22 11:42:23,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:23,377 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 744 transitions. [2024-11-22 11:42:23,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-22 11:42:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 744 transitions. [2024-11-22 11:42:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-22 11:42:23,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:23,381 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:23,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 11:42:23,582 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,SelfDestructingSolverStorable3 [2024-11-22 11:42:23,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:23,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1155146736, now seen corresponding path program 1 times [2024-11-22 11:42:23,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:23,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426115638] [2024-11-22 11:42:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:23,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 51 proven. 129 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-22 11:42:24,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426115638] [2024-11-22 11:42:24,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426115638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281159043] [2024-11-22 11:42:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:24,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:24,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:24,397 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) [2024-11-22 11:42:24,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 11:42:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:24,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 11:42:24,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3018 proven. 129 refuted. 0 times theorem prover too weak. 4173 trivial. 0 not checked. [2024-11-22 11:42:25,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 51 proven. 129 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-22 11:42:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281159043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:25,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:25,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-22 11:42:25,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947136535] [2024-11-22 11:42:25,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:25,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 11:42:25,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:25,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 11:42:25,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 11:42:25,820 INFO L87 Difference]: Start difference. First operand 485 states and 744 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 3 states have call predecessors, (148), 3 states have call successors, (148) [2024-11-22 11:42:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:26,093 INFO L93 Difference]: Finished difference Result 879 states and 1335 transitions. [2024-11-22 11:42:26,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 11:42:26,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 3 states have call predecessors, (148), 3 states have call successors, (148) Word has length 390 [2024-11-22 11:42:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:26,099 INFO L225 Difference]: With dead ends: 879 [2024-11-22 11:42:26,099 INFO L226 Difference]: Without dead ends: 503 [2024-11-22 11:42:26,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-22 11:42:26,103 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 230 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:26,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 531 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 11:42:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-22 11:42:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 497. [2024-11-22 11:42:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 304 states have (on average 1.2664473684210527) internal successors, (385), 305 states have internal predecessors, (385), 183 states have call successors, (183), 9 states have call predecessors, (183), 9 states have return successors, (183), 182 states have call predecessors, (183), 183 states have call successors, (183) [2024-11-22 11:42:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 751 transitions. [2024-11-22 11:42:26,145 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 751 transitions. Word has length 390 [2024-11-22 11:42:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:26,148 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 751 transitions. [2024-11-22 11:42:26,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 3 states have call successors, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 3 states have call predecessors, (148), 3 states have call successors, (148) [2024-11-22 11:42:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 751 transitions. [2024-11-22 11:42:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-11-22 11:42:26,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:26,151 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:26,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 11:42:26,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:26,352 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:26,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1551472658, now seen corresponding path program 1 times [2024-11-22 11:42:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232931797] [2024-11-22 11:42:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 84 proven. 438 refuted. 0 times theorem prover too weak. 6798 trivial. 0 not checked. [2024-11-22 11:42:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232931797] [2024-11-22 11:42:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232931797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067372413] [2024-11-22 11:42:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:29,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:29,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:29,764 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) [2024-11-22 11:42:29,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 11:42:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:29,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 11:42:29,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 2091 proven. 705 refuted. 0 times theorem prover too weak. 4524 trivial. 0 not checked. [2024-11-22 11:42:33,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 84 proven. 447 refuted. 0 times theorem prover too weak. 6789 trivial. 0 not checked. [2024-11-22 11:42:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067372413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 11:42:36,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 11:42:36,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 18] total 47 [2024-11-22 11:42:36,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535437968] [2024-11-22 11:42:36,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:36,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-22 11:42:36,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-22 11:42:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1768, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 11:42:36,556 INFO L87 Difference]: Start difference. First operand 497 states and 751 transitions. Second operand has 47 states, 44 states have (on average 6.181818181818182) internal successors, (272), 42 states have internal predecessors, (272), 14 states have call successors, (183), 6 states have call predecessors, (183), 12 states have return successors, (183), 14 states have call predecessors, (183), 14 states have call successors, (183) [2024-11-22 11:42:42,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:42,832 INFO L93 Difference]: Finished difference Result 2241 states and 3274 transitions. [2024-11-22 11:42:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-22 11:42:42,833 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 6.181818181818182) internal successors, (272), 42 states have internal predecessors, (272), 14 states have call successors, (183), 6 states have call predecessors, (183), 12 states have return successors, (183), 14 states have call predecessors, (183), 14 states have call successors, (183) Word has length 390 [2024-11-22 11:42:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:42,840 INFO L225 Difference]: With dead ends: 2241 [2024-11-22 11:42:42,841 INFO L226 Difference]: Without dead ends: 1857 [2024-11-22 11:42:42,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5162 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2325, Invalid=13175, Unknown=0, NotChecked=0, Total=15500 [2024-11-22 11:42:42,845 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 2506 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 5172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:42,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2537 Valid, 4070 Invalid, 5172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 4485 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-22 11:42:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2024-11-22 11:42:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 786. [2024-11-22 11:42:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 564 states have (on average 1.326241134751773) internal successors, (748), 566 states have internal predecessors, (748), 205 states have call successors, (205), 16 states have call predecessors, (205), 16 states have return successors, (205), 203 states have call predecessors, (205), 205 states have call successors, (205) [2024-11-22 11:42:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1158 transitions. [2024-11-22 11:42:42,935 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1158 transitions. Word has length 390 [2024-11-22 11:42:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:42,936 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 1158 transitions. [2024-11-22 11:42:42,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 6.181818181818182) internal successors, (272), 42 states have internal predecessors, (272), 14 states have call successors, (183), 6 states have call predecessors, (183), 12 states have return successors, (183), 14 states have call predecessors, (183), 14 states have call successors, (183) [2024-11-22 11:42:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1158 transitions. [2024-11-22 11:42:42,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-22 11:42:42,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:42,940 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:42,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 11:42:43,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:43,142 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:43,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1692441666, now seen corresponding path program 1 times [2024-11-22 11:42:43,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:43,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258727937] [2024-11-22 11:42:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:42:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848878093] [2024-11-22 11:42:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:43,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:43,790 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) [2024-11-22 11:42:43,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 11:42:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:44,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 11:42:44,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3454 proven. 405 refuted. 0 times theorem prover too weak. 3461 trivial. 0 not checked. [2024-11-22 11:42:46,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:46,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:46,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258727937] [2024-11-22 11:42:46,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:42:46,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848878093] [2024-11-22 11:42:46,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848878093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:46,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:42:46,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-22 11:42:46,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736973913] [2024-11-22 11:42:46,828 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:46,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 11:42:46,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:46,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 11:42:46,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-22 11:42:46,829 INFO L87 Difference]: Start difference. First operand 786 states and 1158 transitions. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (61), 5 states have call predecessors, (61), 5 states have call successors, (61) [2024-11-22 11:42:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:48,109 INFO L93 Difference]: Finished difference Result 2033 states and 2899 transitions. [2024-11-22 11:42:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 11:42:48,110 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (61), 5 states have call predecessors, (61), 5 states have call successors, (61) Word has length 391 [2024-11-22 11:42:48,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:48,116 INFO L225 Difference]: With dead ends: 2033 [2024-11-22 11:42:48,117 INFO L226 Difference]: Without dead ends: 1765 [2024-11-22 11:42:48,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2024-11-22 11:42:48,118 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 1280 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:48,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 974 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 11:42:48,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2024-11-22 11:42:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1256. [2024-11-22 11:42:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1015 states have (on average 1.355665024630542) internal successors, (1376), 1021 states have internal predecessors, (1376), 213 states have call successors, (213), 27 states have call predecessors, (213), 27 states have return successors, (213), 207 states have call predecessors, (213), 213 states have call successors, (213) [2024-11-22 11:42:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1802 transitions. [2024-11-22 11:42:48,214 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1802 transitions. Word has length 391 [2024-11-22 11:42:48,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:48,214 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 1802 transitions. [2024-11-22 11:42:48,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 14 states have internal predecessors, (107), 5 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (61), 5 states have call predecessors, (61), 5 states have call successors, (61) [2024-11-22 11:42:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1802 transitions. [2024-11-22 11:42:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-22 11:42:48,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:48,219 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:48,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 11:42:48,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:48,421 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:48,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:48,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2105155214, now seen corresponding path program 1 times [2024-11-22 11:42:48,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:48,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143516645] [2024-11-22 11:42:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:48,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:42:48,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875915280] [2024-11-22 11:42:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:48,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:48,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:48,790 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) [2024-11-22 11:42:48,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 11:42:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:49,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 11:42:49,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:50,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3301 proven. 567 refuted. 0 times theorem prover too weak. 3452 trivial. 0 not checked. [2024-11-22 11:42:50,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:42:51,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:42:51,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143516645] [2024-11-22 11:42:51,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:42:51,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875915280] [2024-11-22 11:42:51,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875915280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:42:51,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:42:51,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-22 11:42:51,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120033586] [2024-11-22 11:42:51,918 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:42:51,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 11:42:51,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:42:51,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 11:42:51,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-11-22 11:42:51,920 INFO L87 Difference]: Start difference. First operand 1256 states and 1802 transitions. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 5 states have call successors, (61), 5 states have call predecessors, (61), 8 states have return successors, (61), 5 states have call predecessors, (61), 5 states have call successors, (61) [2024-11-22 11:42:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:42:53,245 INFO L93 Difference]: Finished difference Result 2341 states and 3280 transitions. [2024-11-22 11:42:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-22 11:42:53,246 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 5 states have call successors, (61), 5 states have call predecessors, (61), 8 states have return successors, (61), 5 states have call predecessors, (61), 5 states have call successors, (61) Word has length 391 [2024-11-22 11:42:53,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:42:53,253 INFO L225 Difference]: With dead ends: 2341 [2024-11-22 11:42:53,253 INFO L226 Difference]: Without dead ends: 1861 [2024-11-22 11:42:53,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=607, Invalid=1649, Unknown=0, NotChecked=0, Total=2256 [2024-11-22 11:42:53,255 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 487 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 11:42:53,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1213 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 11:42:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-22 11:42:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1291. [2024-11-22 11:42:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1023 states have (on average 1.3225806451612903) internal successors, (1353), 1027 states have internal predecessors, (1353), 225 states have call successors, (225), 42 states have call predecessors, (225), 42 states have return successors, (225), 221 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:42:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1803 transitions. [2024-11-22 11:42:53,366 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1803 transitions. Word has length 391 [2024-11-22 11:42:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:42:53,367 INFO L471 AbstractCegarLoop]: Abstraction has 1291 states and 1803 transitions. [2024-11-22 11:42:53,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 5 states have call successors, (61), 5 states have call predecessors, (61), 8 states have return successors, (61), 5 states have call predecessors, (61), 5 states have call successors, (61) [2024-11-22 11:42:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1803 transitions. [2024-11-22 11:42:53,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-22 11:42:53,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:42:53,369 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:42:53,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 11:42:53,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:53,571 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:42:53,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:42:53,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1940588160, now seen corresponding path program 1 times [2024-11-22 11:42:53,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:42:53,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596837146] [2024-11-22 11:42:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:53,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:42:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:42:53,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566665301] [2024-11-22 11:42:53,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:42:53,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:42:53,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:42:53,892 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) [2024-11-22 11:42:53,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 11:42:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:42:54,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-22 11:42:54,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:42:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3309 proven. 594 refuted. 0 times theorem prover too weak. 3417 trivial. 0 not checked. [2024-11-22 11:42:58,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596837146] [2024-11-22 11:43:01,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:43:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566665301] [2024-11-22 11:43:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566665301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:01,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:43:01,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2024-11-22 11:43:01,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118542827] [2024-11-22 11:43:01,146 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:01,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 11:43:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 11:43:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 11:43:01,147 INFO L87 Difference]: Start difference. First operand 1291 states and 1803 transitions. Second operand has 27 states, 27 states have (on average 4.185185185185185) internal successors, (113), 26 states have internal predecessors, (113), 6 states have call successors, (61), 6 states have call predecessors, (61), 9 states have return successors, (61), 5 states have call predecessors, (61), 6 states have call successors, (61) [2024-11-22 11:43:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:09,342 INFO L93 Difference]: Finished difference Result 4090 states and 5678 transitions. [2024-11-22 11:43:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-22 11:43:09,343 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.185185185185185) internal successors, (113), 26 states have internal predecessors, (113), 6 states have call successors, (61), 6 states have call predecessors, (61), 9 states have return successors, (61), 5 states have call predecessors, (61), 6 states have call successors, (61) Word has length 391 [2024-11-22 11:43:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:09,353 INFO L225 Difference]: With dead ends: 4090 [2024-11-22 11:43:09,353 INFO L226 Difference]: Without dead ends: 3659 [2024-11-22 11:43:09,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=886, Invalid=4664, Unknown=0, NotChecked=0, Total=5550 [2024-11-22 11:43:09,356 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 2145 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:09,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 3021 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-22 11:43:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2024-11-22 11:43:09,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 1434. [2024-11-22 11:43:09,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1163 states have (on average 1.3387790197764402) internal successors, (1557), 1167 states have internal predecessors, (1557), 225 states have call successors, (225), 45 states have call predecessors, (225), 45 states have return successors, (225), 221 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:43:09,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2007 transitions. [2024-11-22 11:43:09,484 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2007 transitions. Word has length 391 [2024-11-22 11:43:09,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:09,485 INFO L471 AbstractCegarLoop]: Abstraction has 1434 states and 2007 transitions. [2024-11-22 11:43:09,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.185185185185185) internal successors, (113), 26 states have internal predecessors, (113), 6 states have call successors, (61), 6 states have call predecessors, (61), 9 states have return successors, (61), 5 states have call predecessors, (61), 6 states have call successors, (61) [2024-11-22 11:43:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2007 transitions. [2024-11-22 11:43:09,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-22 11:43:09,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:09,488 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:09,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 11:43:09,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:09,689 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:09,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:09,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1857008720, now seen corresponding path program 1 times [2024-11-22 11:43:09,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:09,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236131349] [2024-11-22 11:43:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:09,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:43:09,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503885992] [2024-11-22 11:43:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:09,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:09,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:09,989 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) [2024-11-22 11:43:09,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 11:43:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:10,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 11:43:10,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3296 proven. 447 refuted. 0 times theorem prover too weak. 3577 trivial. 0 not checked. [2024-11-22 11:43:14,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:15,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236131349] [2024-11-22 11:43:15,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:43:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503885992] [2024-11-22 11:43:15,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503885992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:15,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:43:15,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-22 11:43:15,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582515707] [2024-11-22 11:43:15,428 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:15,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 11:43:15,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:15,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 11:43:15,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2024-11-22 11:43:15,430 INFO L87 Difference]: Start difference. First operand 1434 states and 2007 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 20 states have internal predecessors, (107), 4 states have call successors, (61), 4 states have call predecessors, (61), 7 states have return successors, (61), 5 states have call predecessors, (61), 4 states have call successors, (61) [2024-11-22 11:43:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 11:43:23,383 INFO L93 Difference]: Finished difference Result 3553 states and 4950 transitions. [2024-11-22 11:43:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-22 11:43:23,383 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 20 states have internal predecessors, (107), 4 states have call successors, (61), 4 states have call predecessors, (61), 7 states have return successors, (61), 5 states have call predecessors, (61), 4 states have call successors, (61) Word has length 391 [2024-11-22 11:43:23,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 11:43:23,395 INFO L225 Difference]: With dead ends: 3553 [2024-11-22 11:43:23,395 INFO L226 Difference]: Without dead ends: 3097 [2024-11-22 11:43:23,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=599, Invalid=2941, Unknown=0, NotChecked=0, Total=3540 [2024-11-22 11:43:23,400 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 1258 mSDsluCounter, 4576 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 4959 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-22 11:43:23,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 4959 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-22 11:43:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2024-11-22 11:43:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 1423. [2024-11-22 11:43:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1152 states have (on average 1.3385416666666667) internal successors, (1542), 1156 states have internal predecessors, (1542), 225 states have call successors, (225), 45 states have call predecessors, (225), 45 states have return successors, (225), 221 states have call predecessors, (225), 225 states have call successors, (225) [2024-11-22 11:43:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1992 transitions. [2024-11-22 11:43:23,546 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1992 transitions. Word has length 391 [2024-11-22 11:43:23,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 11:43:23,547 INFO L471 AbstractCegarLoop]: Abstraction has 1423 states and 1992 transitions. [2024-11-22 11:43:23,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 20 states have internal predecessors, (107), 4 states have call successors, (61), 4 states have call predecessors, (61), 7 states have return successors, (61), 5 states have call predecessors, (61), 4 states have call successors, (61) [2024-11-22 11:43:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1992 transitions. [2024-11-22 11:43:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-22 11:43:23,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 11:43:23,550 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 11:43:23,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 11:43:23,753 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,SelfDestructingSolverStorable9 [2024-11-22 11:43:23,754 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 11:43:23,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 11:43:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1617382889, now seen corresponding path program 1 times [2024-11-22 11:43:23,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 11:43:23,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026423644] [2024-11-22 11:43:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:23,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 11:43:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 11:43:24,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174905179] [2024-11-22 11:43:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 11:43:24,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 11:43:24,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 11:43:24,092 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) [2024-11-22 11:43:24,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 11:43:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 11:43:24,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-22 11:43:24,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 11:43:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3048 proven. 888 refuted. 0 times theorem prover too weak. 3384 trivial. 0 not checked. [2024-11-22 11:43:32,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 11:43:38,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 11:43:38,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026423644] [2024-11-22 11:43:38,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 11:43:38,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174905179] [2024-11-22 11:43:38,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174905179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 11:43:38,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 11:43:38,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2024-11-22 11:43:38,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855022872] [2024-11-22 11:43:38,732 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 11:43:38,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 11:43:38,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 11:43:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 11:43:38,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1505, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 11:43:38,734 INFO L87 Difference]: Start difference. First operand 1423 states and 1992 transitions. Second operand has 32 states, 32 states have (on average 3.71875) internal successors, (119), 29 states have internal predecessors, (119), 8 states have call successors, (61), 8 states have call predecessors, (61), 11 states have return successors, (61), 7 states have call predecessors, (61), 8 states have call successors, (61)