./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.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 c9b50f113379d6dd32c9227ee2a149aa46425a55ff517b54eccf6b1bc662e210 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:42:38,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:42:38,189 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:42:38,195 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:42:38,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:42:38,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:42:38,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:42:38,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:42:38,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:42:38,234 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:42:38,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:42:38,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:42:38,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:42:38,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:42:38,238 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:42:38,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:42:38,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:42:38,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:42:38,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:42:38,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:42:38,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:42:38,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:42:38,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:42:38,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:42:38,241 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:42:38,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:42:38,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:42:38,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:42:38,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:42:38,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:42:38,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:42:38,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:42:38,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:42:38,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:42:38,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:42:38,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:42:38,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:42:38,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:42:38,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:42:38,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:42:38,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:42:38,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:42:38,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b50f113379d6dd32c9227ee2a149aa46425a55ff517b54eccf6b1bc662e210 [2024-11-18 23:42:38,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:42:38,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:42:38,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:42:38,551 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:42:38,551 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:42:38,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.i [2024-11-18 23:42:39,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:42:40,186 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:42:40,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-34.i [2024-11-18 23:42:40,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d327679b4/728aef3ece504a47bd7e7468432115e1/FLAG890632f4e [2024-11-18 23:42:40,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d327679b4/728aef3ece504a47bd7e7468432115e1 [2024-11-18 23:42:40,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:42:40,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:42:40,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:42:40,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:42:40,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:42:40,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:42:40" (1/1) ... [2024-11-18 23:42:40,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626378eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:40, skipping insertion in model container [2024-11-18 23:42:40,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:42:40" (1/1) ... [2024-11-18 23:42:40,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:42:40,769 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-34.i[916,929] [2024-11-18 23:42:40,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:42:40,948 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:42:40,959 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-34.i[916,929] [2024-11-18 23:42:41,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:42:41,106 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:42:41,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41 WrapperNode [2024-11-18 23:42:41,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:42:41,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:42:41,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:42:41,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:42:41,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,212 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 435 [2024-11-18 23:42:41,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:42:41,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:42:41,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:42:41,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:42:41,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,294 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:42:41,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:42:41,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:42:41,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:42:41,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:42:41,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (1/1) ... [2024-11-18 23:42:41,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:42:41,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:41,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:42:41,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:42:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:42:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:42:41,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:42:41,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:42:41,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:42:41,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:42:41,581 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:42:41,584 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:42:42,362 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-18 23:42:42,363 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:42:42,380 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:42:42,381 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:42:42,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:42:42 BoogieIcfgContainer [2024-11-18 23:42:42,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:42:42,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:42:42,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:42:42,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:42:42,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:42:40" (1/3) ... [2024-11-18 23:42:42,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b494700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:42:42, skipping insertion in model container [2024-11-18 23:42:42,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:42:41" (2/3) ... [2024-11-18 23:42:42,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b494700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:42:42, skipping insertion in model container [2024-11-18 23:42:42,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:42:42" (3/3) ... [2024-11-18 23:42:42,391 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-34.i [2024-11-18 23:42:42,405 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:42:42,405 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:42:42,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:42:42,523 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;@48dd61e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:42:42,523 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:42:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 133 states have (on average 1.5037593984962405) internal successors, (200), 134 states have internal predecessors, (200), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 23:42:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:42:42,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:42,587 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:42:42,588 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:42,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:42,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1209112783, now seen corresponding path program 1 times [2024-11-18 23:42:42,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:42,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483359235] [2024-11-18 23:42:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:42,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-18 23:42:43,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:43,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483359235] [2024-11-18 23:42:43,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483359235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341394982] [2024-11-18 23:42:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:43,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:43,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:42:43,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:42:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:43,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:42:43,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-18 23:42:43,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:42:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341394982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:43,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:42:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:42:43,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885340918] [2024-11-18 23:42:43,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:43,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:42:43,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:43,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:42:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:42:43,532 INFO L87 Difference]: Start difference. First operand has 180 states, 133 states have (on average 1.5037593984962405) internal successors, (200), 134 states have internal predecessors, (200), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 23:42:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:43,572 INFO L93 Difference]: Finished difference Result 353 states and 614 transitions. [2024-11-18 23:42:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:42:43,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 300 [2024-11-18 23:42:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:43,582 INFO L225 Difference]: With dead ends: 353 [2024-11-18 23:42:43,582 INFO L226 Difference]: Without dead ends: 176 [2024-11-18 23:42:43,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:42:43,593 INFO L432 NwaCegarLoop]: 280 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, 280 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:43,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:42:43,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-18 23:42:43,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-18 23:42:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.476923076923077) internal successors, (192), 130 states have internal predecessors, (192), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 23:42:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 280 transitions. [2024-11-18 23:42:43,674 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 280 transitions. Word has length 300 [2024-11-18 23:42:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:43,675 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 280 transitions. [2024-11-18 23:42:43,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 23:42:43,676 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 280 transitions. [2024-11-18 23:42:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:42:43,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:43,686 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:42:43,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 23:42:43,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:42:43,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:43,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1464362175, now seen corresponding path program 1 times [2024-11-18 23:42:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:43,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903655097] [2024-11-18 23:42:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:42:44,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:44,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903655097] [2024-11-18 23:42:44,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903655097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:44,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:44,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:42:44,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816875108] [2024-11-18 23:42:44,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:44,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:42:44,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:42:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:42:44,256 INFO L87 Difference]: Start difference. First operand 176 states and 280 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:42:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:44,359 INFO L93 Difference]: Finished difference Result 479 states and 762 transitions. [2024-11-18 23:42:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:42:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-11-18 23:42:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:44,365 INFO L225 Difference]: With dead ends: 479 [2024-11-18 23:42:44,368 INFO L226 Difference]: Without dead ends: 306 [2024-11-18 23:42:44,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:42:44,371 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 193 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:44,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 718 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:42:44,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-18 23:42:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2024-11-18 23:42:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 237 states have (on average 1.4978902953586497) internal successors, (355), 238 states have internal predecessors, (355), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-18 23:42:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 481 transitions. [2024-11-18 23:42:44,414 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 481 transitions. Word has length 300 [2024-11-18 23:42:44,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:44,415 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 481 transitions. [2024-11-18 23:42:44,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:42:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 481 transitions. [2024-11-18 23:42:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:42:44,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:44,425 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:42:44,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:42:44,426 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:44,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1834189951, now seen corresponding path program 1 times [2024-11-18 23:42:44,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:44,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061490342] [2024-11-18 23:42:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:44,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:42:44,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:44,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061490342] [2024-11-18 23:42:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061490342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:44,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:44,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:42:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873446323] [2024-11-18 23:42:44,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:44,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:42:44,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:42:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:42:44,694 INFO L87 Difference]: Start difference. First operand 303 states and 481 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:42:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:44,819 INFO L93 Difference]: Finished difference Result 863 states and 1366 transitions. [2024-11-18 23:42:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:42:44,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-11-18 23:42:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:44,830 INFO L225 Difference]: With dead ends: 863 [2024-11-18 23:42:44,831 INFO L226 Difference]: Without dead ends: 563 [2024-11-18 23:42:44,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:42:44,834 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 229 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:44,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 661 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:42:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-18 23:42:44,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 365. [2024-11-18 23:42:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 299 states have (on average 1.4849498327759196) internal successors, (444), 300 states have internal predecessors, (444), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 62 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-18 23:42:44,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 570 transitions. [2024-11-18 23:42:44,876 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 570 transitions. Word has length 300 [2024-11-18 23:42:44,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:44,877 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 570 transitions. [2024-11-18 23:42:44,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:42:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 570 transitions. [2024-11-18 23:42:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-18 23:42:44,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:44,881 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:42:44,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:42:44,882 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:44,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -474137471, now seen corresponding path program 1 times [2024-11-18 23:42:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:44,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842435974] [2024-11-18 23:42:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:42:45,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:45,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842435974] [2024-11-18 23:42:45,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842435974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:45,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:45,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:42:45,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822134681] [2024-11-18 23:42:45,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:45,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:42:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:42:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:42:45,222 INFO L87 Difference]: Start difference. First operand 365 states and 570 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:42:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:45,289 INFO L93 Difference]: Finished difference Result 1089 states and 1704 transitions. [2024-11-18 23:42:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:42:45,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-11-18 23:42:45,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:45,297 INFO L225 Difference]: With dead ends: 1089 [2024-11-18 23:42:45,297 INFO L226 Difference]: Without dead ends: 727 [2024-11-18 23:42:45,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:42:45,300 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 169 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:45,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 538 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:42:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-18 23:42:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 715. [2024-11-18 23:42:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 584 states have (on average 1.4726027397260273) internal successors, (860), 586 states have internal predecessors, (860), 126 states have call successors, (126), 4 states have call predecessors, (126), 4 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2024-11-18 23:42:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1112 transitions. [2024-11-18 23:42:45,360 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1112 transitions. Word has length 300 [2024-11-18 23:42:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:45,361 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1112 transitions. [2024-11-18 23:42:45,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:42:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1112 transitions. [2024-11-18 23:42:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-18 23:42:45,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:45,366 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:42:45,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:42:45,366 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:45,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:45,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1893187998, now seen corresponding path program 1 times [2024-11-18 23:42:45,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:45,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277542094] [2024-11-18 23:42:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:45,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:42:46,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:46,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277542094] [2024-11-18 23:42:46,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277542094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:42:46,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:42:46,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:42:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723629502] [2024-11-18 23:42:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:42:46,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:42:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:42:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:42:46,435 INFO L87 Difference]: Start difference. First operand 715 states and 1112 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:42:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:46,754 INFO L93 Difference]: Finished difference Result 1983 states and 3085 transitions. [2024-11-18 23:42:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:42:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2024-11-18 23:42:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:46,763 INFO L225 Difference]: With dead ends: 1983 [2024-11-18 23:42:46,764 INFO L226 Difference]: Without dead ends: 1271 [2024-11-18 23:42:46,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:42:46,767 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 255 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:46,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 803 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:42:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-18 23:42:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1057. [2024-11-18 23:42:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 881 states have (on average 1.503972758229285) internal successors, (1325), 883 states have internal predecessors, (1325), 170 states have call successors, (170), 5 states have call predecessors, (170), 5 states have return successors, (170), 168 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-18 23:42:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1665 transitions. [2024-11-18 23:42:46,843 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1665 transitions. Word has length 301 [2024-11-18 23:42:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:46,844 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1665 transitions. [2024-11-18 23:42:46,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:42:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1665 transitions. [2024-11-18 23:42:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-18 23:42:46,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:46,850 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:42:46,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:42:46,850 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:46,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:46,851 INFO L85 PathProgramCache]: Analyzing trace with hash 714729091, now seen corresponding path program 1 times [2024-11-18 23:42:46,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:46,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481018963] [2024-11-18 23:42:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:46,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 6 proven. 123 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-18 23:42:48,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:48,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481018963] [2024-11-18 23:42:48,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481018963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:48,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357837775] [2024-11-18 23:42:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:48,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:42:48,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:42:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:48,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 23:42:48,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1873 proven. 150 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2024-11-18 23:42:49,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:42:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-18 23:42:49,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357837775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:42:49,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:42:49,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 14 [2024-11-18 23:42:49,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462631956] [2024-11-18 23:42:49,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:42:49,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:42:49,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:42:49,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:42:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:42:49,439 INFO L87 Difference]: Start difference. First operand 1057 states and 1665 transitions. Second operand has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 4 states have call successors, (111), 3 states have call predecessors, (111), 5 states have return successors, (113), 4 states have call predecessors, (113), 4 states have call successors, (113) [2024-11-18 23:42:52,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:42:52,132 INFO L93 Difference]: Finished difference Result 3829 states and 5786 transitions. [2024-11-18 23:42:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-18 23:42:52,133 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 4 states have call successors, (111), 3 states have call predecessors, (111), 5 states have return successors, (113), 4 states have call predecessors, (113), 4 states have call successors, (113) Word has length 302 [2024-11-18 23:42:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:42:52,152 INFO L225 Difference]: With dead ends: 3829 [2024-11-18 23:42:52,153 INFO L226 Difference]: Without dead ends: 3001 [2024-11-18 23:42:52,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 606 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=982, Invalid=3308, Unknown=0, NotChecked=0, Total=4290 [2024-11-18 23:42:52,161 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 2460 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:42:52,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 1639 Invalid, 1905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [538 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 23:42:52,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2024-11-18 23:42:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 1521. [2024-11-18 23:42:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1330 states have (on average 1.4233082706766917) internal successors, (1893), 1334 states have internal predecessors, (1893), 170 states have call successors, (170), 20 states have call predecessors, (170), 20 states have return successors, (170), 166 states have call predecessors, (170), 170 states have call successors, (170) [2024-11-18 23:42:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2233 transitions. [2024-11-18 23:42:52,337 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2233 transitions. Word has length 302 [2024-11-18 23:42:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:42:52,338 INFO L471 AbstractCegarLoop]: Abstraction has 1521 states and 2233 transitions. [2024-11-18 23:42:52,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 4 states have call successors, (111), 3 states have call predecessors, (111), 5 states have return successors, (113), 4 states have call predecessors, (113), 4 states have call successors, (113) [2024-11-18 23:42:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2233 transitions. [2024-11-18 23:42:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-18 23:42:52,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:42:52,343 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:42:52,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 23:42:52,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 23:42:52,548 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:42:52,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:42:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1313335641, now seen corresponding path program 1 times [2024-11-18 23:42:52,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:42:52,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840039101] [2024-11-18 23:42:52,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:52,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:42:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 228 proven. 141 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2024-11-18 23:42:55,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:42:55,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840039101] [2024-11-18 23:42:55,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840039101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:42:55,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869946363] [2024-11-18 23:42:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:42:55,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:42:55,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:42:55,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:42:55,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:42:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:42:55,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 23:42:55,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:42:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1573 proven. 165 refuted. 0 times theorem prover too weak. 2046 trivial. 0 not checked. [2024-11-18 23:42:57,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:43:23,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869946363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:23,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:43:23,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 31 [2024-11-18 23:43:23,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53140115] [2024-11-18 23:43:23,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:43:23,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 23:43:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 23:43:23,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1185, Unknown=3, NotChecked=0, Total=1332 [2024-11-18 23:43:23,836 INFO L87 Difference]: Start difference. First operand 1521 states and 2233 transitions. Second operand has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 29 states have internal predecessors, (174), 8 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 9 states have call predecessors, (88), 8 states have call successors, (88) [2024-11-18 23:43:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:32,540 INFO L93 Difference]: Finished difference Result 7331 states and 10325 transitions. [2024-11-18 23:43:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-18 23:43:32,542 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 29 states have internal predecessors, (174), 8 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 9 states have call predecessors, (88), 8 states have call successors, (88) Word has length 303 [2024-11-18 23:43:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:32,565 INFO L225 Difference]: With dead ends: 7331 [2024-11-18 23:43:32,566 INFO L226 Difference]: Without dead ends: 5939 [2024-11-18 23:43:32,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5123 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=2205, Invalid=13794, Unknown=3, NotChecked=0, Total=16002 [2024-11-18 23:43:32,574 INFO L432 NwaCegarLoop]: 438 mSDtfsCounter, 4397 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4400 SdHoareTripleChecker+Valid, 5487 SdHoareTripleChecker+Invalid, 5310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:32,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4400 Valid, 5487 Invalid, 5310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 4486 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 23:43:32,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2024-11-18 23:43:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 3235. [2024-11-18 23:43:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 2878 states have (on average 1.396455872133426) internal successors, (4019), 2890 states have internal predecessors, (4019), 284 states have call successors, (284), 72 states have call predecessors, (284), 72 states have return successors, (284), 272 states have call predecessors, (284), 284 states have call successors, (284) [2024-11-18 23:43:32,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4587 transitions. [2024-11-18 23:43:32,837 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4587 transitions. Word has length 303 [2024-11-18 23:43:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:32,838 INFO L471 AbstractCegarLoop]: Abstraction has 3235 states and 4587 transitions. [2024-11-18 23:43:32,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.612903225806452) internal successors, (174), 29 states have internal predecessors, (174), 8 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 9 states have call predecessors, (88), 8 states have call successors, (88) [2024-11-18 23:43:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4587 transitions. [2024-11-18 23:43:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-18 23:43:32,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:32,845 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:32,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:43:33,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:33,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:33,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 953045545, now seen corresponding path program 1 times [2024-11-18 23:43:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466564547] [2024-11-18 23:43:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 228 proven. 141 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2024-11-18 23:43:35,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:35,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466564547] [2024-11-18 23:43:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466564547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:35,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076497572] [2024-11-18 23:43:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:35,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:35,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:35,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:43:35,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:43:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:36,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-18 23:43:36,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1573 proven. 165 refuted. 0 times theorem prover too weak. 2046 trivial. 0 not checked. [2024-11-18 23:43:37,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:43:38,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076497572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:38,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:43:38,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19] total 28 [2024-11-18 23:43:38,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404805637] [2024-11-18 23:43:38,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:43:38,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 23:43:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 23:43:38,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 23:43:38,296 INFO L87 Difference]: Start difference. First operand 3235 states and 4587 transitions. Second operand has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 26 states have internal predecessors, (167), 7 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 7 states have call successors, (88) [2024-11-18 23:43:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:43,388 INFO L93 Difference]: Finished difference Result 8481 states and 11813 transitions. [2024-11-18 23:43:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-18 23:43:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 26 states have internal predecessors, (167), 7 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 7 states have call successors, (88) Word has length 303 [2024-11-18 23:43:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:43,414 INFO L225 Difference]: With dead ends: 8481 [2024-11-18 23:43:43,415 INFO L226 Difference]: Without dead ends: 6703 [2024-11-18 23:43:43,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 353 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1790, Invalid=6400, Unknown=0, NotChecked=0, Total=8190 [2024-11-18 23:43:43,423 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 2718 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2723 SdHoareTripleChecker+Valid, 4041 SdHoareTripleChecker+Invalid, 3717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:43,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2723 Valid, 4041 Invalid, 3717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 23:43:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6703 states. [2024-11-18 23:43:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6703 to 4407. [2024-11-18 23:43:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4407 states, 3884 states have (on average 1.38697219361483) internal successors, (5387), 3900 states have internal predecessors, (5387), 414 states have call successors, (414), 108 states have call predecessors, (414), 108 states have return successors, (414), 398 states have call predecessors, (414), 414 states have call successors, (414) [2024-11-18 23:43:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 6215 transitions. [2024-11-18 23:43:43,786 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 6215 transitions. Word has length 303 [2024-11-18 23:43:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:43,787 INFO L471 AbstractCegarLoop]: Abstraction has 4407 states and 6215 transitions. [2024-11-18 23:43:43,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.964285714285714) internal successors, (167), 26 states have internal predecessors, (167), 7 states have call successors, (88), 5 states have call predecessors, (88), 8 states have return successors, (88), 8 states have call predecessors, (88), 7 states have call successors, (88) [2024-11-18 23:43:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 6215 transitions. [2024-11-18 23:43:43,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 23:43:43,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:43,795 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:43,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 23:43:43,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:43,999 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:44,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1360242306, now seen corresponding path program 1 times [2024-11-18 23:43:44,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:44,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574558454] [2024-11-18 23:43:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:44,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:43:45,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:45,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574558454] [2024-11-18 23:43:45,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574558454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:45,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:45,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:43:45,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951642980] [2024-11-18 23:43:45,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:45,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:43:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:43:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:43:45,324 INFO L87 Difference]: Start difference. First operand 4407 states and 6215 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 23:43:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:46,814 INFO L93 Difference]: Finished difference Result 17733 states and 24715 transitions. [2024-11-18 23:43:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:43:46,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 304 [2024-11-18 23:43:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:46,866 INFO L225 Difference]: With dead ends: 17733 [2024-11-18 23:43:46,866 INFO L226 Difference]: Without dead ends: 14399 [2024-11-18 23:43:46,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:43:46,878 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 1148 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:46,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 1078 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:43:46,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14399 states. [2024-11-18 23:43:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14399 to 9613. [2024-11-18 23:43:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9613 states, 8609 states have (on average 1.3906377047276106) internal successors, (11972), 8645 states have internal predecessors, (11972), 792 states have call successors, (792), 211 states have call predecessors, (792), 211 states have return successors, (792), 756 states have call predecessors, (792), 792 states have call successors, (792) [2024-11-18 23:43:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9613 states to 9613 states and 13556 transitions. [2024-11-18 23:43:47,745 INFO L78 Accepts]: Start accepts. Automaton has 9613 states and 13556 transitions. Word has length 304 [2024-11-18 23:43:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:47,746 INFO L471 AbstractCegarLoop]: Abstraction has 9613 states and 13556 transitions. [2024-11-18 23:43:47,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-18 23:43:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 9613 states and 13556 transitions. [2024-11-18 23:43:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 23:43:47,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:47,755 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:47,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:43:47,755 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:47,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1654861312, now seen corresponding path program 1 times [2024-11-18 23:43:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:47,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898258185] [2024-11-18 23:43:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 90 proven. 39 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-18 23:43:48,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898258185] [2024-11-18 23:43:48,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898258185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:43:48,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983028947] [2024-11-18 23:43:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:48,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:48,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:48,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:43:48,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 23:43:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:48,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 23:43:48,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:43:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1663 proven. 39 refuted. 0 times theorem prover too weak. 2082 trivial. 0 not checked. [2024-11-18 23:43:48,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:43:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 90 proven. 39 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-18 23:43:49,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983028947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:43:49,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:43:49,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-18 23:43:49,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105224140] [2024-11-18 23:43:49,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:43:49,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:43:49,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:43:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:43:49,255 INFO L87 Difference]: Start difference. First operand 9613 states and 13556 transitions. Second operand has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 4 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2024-11-18 23:43:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:50,068 INFO L93 Difference]: Finished difference Result 17273 states and 24182 transitions. [2024-11-18 23:43:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:43:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 4 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) Word has length 304 [2024-11-18 23:43:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:50,097 INFO L225 Difference]: With dead ends: 17273 [2024-11-18 23:43:50,097 INFO L226 Difference]: Without dead ends: 9629 [2024-11-18 23:43:50,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:43:50,114 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 751 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:50,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 577 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:43:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9629 states. [2024-11-18 23:43:50,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9629 to 8961. [2024-11-18 23:43:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8961 states, 7944 states have (on average 1.3771399798590132) internal successors, (10940), 7980 states have internal predecessors, (10940), 792 states have call successors, (792), 224 states have call predecessors, (792), 224 states have return successors, (792), 756 states have call predecessors, (792), 792 states have call successors, (792) [2024-11-18 23:43:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 12524 transitions. [2024-11-18 23:43:50,891 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 12524 transitions. Word has length 304 [2024-11-18 23:43:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:50,892 INFO L471 AbstractCegarLoop]: Abstraction has 8961 states and 12524 transitions. [2024-11-18 23:43:50,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 4 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2024-11-18 23:43:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 12524 transitions. [2024-11-18 23:43:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 23:43:50,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:50,903 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:50,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 23:43:51,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 23:43:51,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:51,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:51,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1004238121, now seen corresponding path program 1 times [2024-11-18 23:43:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:51,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736411613] [2024-11-18 23:43:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-18 23:43:51,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:43:51,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736411613] [2024-11-18 23:43:51,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736411613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:43:51,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:43:51,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:43:51,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152244528] [2024-11-18 23:43:51,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:43:51,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:43:51,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:43:51,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:43:51,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:43:51,583 INFO L87 Difference]: Start difference. First operand 8961 states and 12524 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:43:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:43:52,620 INFO L93 Difference]: Finished difference Result 17646 states and 24586 transitions. [2024-11-18 23:43:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:43:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 304 [2024-11-18 23:43:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:43:52,661 INFO L225 Difference]: With dead ends: 17646 [2024-11-18 23:43:52,661 INFO L226 Difference]: Without dead ends: 10478 [2024-11-18 23:43:52,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:43:52,680 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 353 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:43:52,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 778 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:43:52,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10478 states. [2024-11-18 23:43:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10478 to 6403. [2024-11-18 23:43:53,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6403 states, 5662 states have (on average 1.3876722006358178) internal successors, (7857), 5682 states have internal predecessors, (7857), 572 states have call successors, (572), 168 states have call predecessors, (572), 168 states have return successors, (572), 552 states have call predecessors, (572), 572 states have call successors, (572) [2024-11-18 23:43:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6403 states to 6403 states and 9001 transitions. [2024-11-18 23:43:53,408 INFO L78 Accepts]: Start accepts. Automaton has 6403 states and 9001 transitions. Word has length 304 [2024-11-18 23:43:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:43:53,409 INFO L471 AbstractCegarLoop]: Abstraction has 6403 states and 9001 transitions. [2024-11-18 23:43:53,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-18 23:43:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6403 states and 9001 transitions. [2024-11-18 23:43:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-18 23:43:53,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:43:53,415 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:43:53,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:43:53,415 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:43:53,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:43:53,416 INFO L85 PathProgramCache]: Analyzing trace with hash -391277740, now seen corresponding path program 1 times [2024-11-18 23:43:53,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:43:53,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819109130] [2024-11-18 23:43:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:53,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:43:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:43:53,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734146683] [2024-11-18 23:43:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:43:53,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:43:53,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:43:53,704 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:43:53,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 23:43:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:43:53,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 23:43:53,993 INFO L278 TraceCheckSpWp]: Computing forward predicates...