./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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-19.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 19e2e876a884367ff58d4d1ec0d3ef70a7d8dd103d1be66ce3d8fde890972c6b --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 00:08:37,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 00:08:37,220 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 00:08:37,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 00:08:37,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 00:08:37,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 00:08:37,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 00:08:37,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 00:08:37,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 00:08:37,252 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 00:08:37,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 00:08:37,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 00:08:37,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 00:08:37,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 00:08:37,253 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 00:08:37,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 00:08:37,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 00:08:37,253 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 00:08:37,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 00:08:37,254 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 00:08:37,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 00:08:37,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 00:08:37,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 00:08:37,255 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 19e2e876a884367ff58d4d1ec0d3ef70a7d8dd103d1be66ce3d8fde890972c6b [2025-03-04 00:08:37,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 00:08:37,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 00:08:37,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 00:08:37,548 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 00:08:37,549 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 00:08:37,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i [2025-03-04 00:08:38,905 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99cdc9cfc/1275da0cefc6451a89b833f7bddbd732/FLAG7f3a1d875 [2025-03-04 00:08:39,246 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 00:08:39,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-19.i [2025-03-04 00:08:39,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99cdc9cfc/1275da0cefc6451a89b833f7bddbd732/FLAG7f3a1d875 [2025-03-04 00:08:39,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99cdc9cfc/1275da0cefc6451a89b833f7bddbd732 [2025-03-04 00:08:39,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 00:08:39,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 00:08:39,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 00:08:39,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 00:08:39,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 00:08:39,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 12:08:39" (1/1) ... [2025-03-04 00:08:39,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b62f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:39, skipping insertion in model container [2025-03-04 00:08:39,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 12:08:39" (1/1) ... [2025-03-04 00:08:39,548 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 00:08:39,707 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-19.i[916,929] [2025-03-04 00:08:39,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 00:08:39,908 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 00:08:39,926 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-19.i[916,929] [2025-03-04 00:08:40,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 00:08:40,059 INFO L204 MainTranslator]: Completed translation [2025-03-04 00:08:40,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40 WrapperNode [2025-03-04 00:08:40,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 00:08:40,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 00:08:40,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 00:08:40,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 00:08:40,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,100 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,188 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 374 [2025-03-04 00:08:40,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 00:08:40,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 00:08:40,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 00:08:40,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 00:08:40,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,284 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]. [2025-03-04 00:08:40,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,313 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 00:08:40,363 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 00:08:40,367 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 00:08:40,368 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 00:08:40,369 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (1/1) ... [2025-03-04 00:08:40,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 00:08:40,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:08:40,418 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) [2025-03-04 00:08:40,432 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 [2025-03-04 00:08:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 00:08:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 00:08:40,463 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 00:08:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 00:08:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 00:08:40,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 00:08:40,614 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 00:08:40,619 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 00:08:41,583 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L367: havoc property_#t~ite33#1;havoc property_#t~bitwise32#1;havoc property_#t~short34#1; [2025-03-04 00:08:41,690 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2025-03-04 00:08:41,693 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 00:08:41,724 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 00:08:41,726 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 00:08:41,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:08:41 BoogieIcfgContainer [2025-03-04 00:08:41,726 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 00:08:41,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 00:08:41,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 00:08:41,739 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 00:08:41,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 12:08:39" (1/3) ... [2025-03-04 00:08:41,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30aab123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:08:41, skipping insertion in model container [2025-03-04 00:08:41,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:08:40" (2/3) ... [2025-03-04 00:08:41,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30aab123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:08:41, skipping insertion in model container [2025-03-04 00:08:41,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:08:41" (3/3) ... [2025-03-04 00:08:41,740 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-19.i [2025-03-04 00:08:41,764 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 00:08:41,768 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-19.i that has 2 procedures, 155 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-04 00:08:41,855 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 00:08:41,865 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;@5e9a1e5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 00:08:41,865 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 00:08:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 107 states have (on average 1.514018691588785) internal successors, (162), 108 states have internal predecessors, (162), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-04 00:08:41,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2025-03-04 00:08:41,886 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:08:41,887 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:08:41,888 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:08:41,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:08:41,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1554179110, now seen corresponding path program 1 times [2025-03-04 00:08:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:08:41,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548943741] [2025-03-04 00:08:41,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:08:41,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:08:42,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 293 statements into 1 equivalence classes. [2025-03-04 00:08:42,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 293 of 293 statements. [2025-03-04 00:08:42,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:08:42,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:08:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-03-04 00:08:42,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:08:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548943741] [2025-03-04 00:08:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548943741] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:08:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165834570] [2025-03-04 00:08:42,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:08:42,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:08:42,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:08:42,736 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) [2025-03-04 00:08:42,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 00:08:42,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 293 statements into 1 equivalence classes. [2025-03-04 00:08:43,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 293 of 293 statements. [2025-03-04 00:08:43,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:08:43,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:08:43,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 00:08:43,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:08:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-03-04 00:08:43,289 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 00:08:43,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165834570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 00:08:43,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 00:08:43,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 00:08:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948527461] [2025-03-04 00:08:43,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 00:08:43,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 00:08:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:08:43,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 00:08:43,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 00:08:43,339 INFO L87 Difference]: Start difference. First operand has 155 states, 107 states have (on average 1.514018691588785) internal successors, (162), 108 states have internal predecessors, (162), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-04 00:08:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:08:43,410 INFO L93 Difference]: Finished difference Result 303 states and 542 transitions. [2025-03-04 00:08:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 00:08:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 293 [2025-03-04 00:08:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:08:43,426 INFO L225 Difference]: With dead ends: 303 [2025-03-04 00:08:43,427 INFO L226 Difference]: Without dead ends: 151 [2025-03-04 00:08:43,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 00:08:43,438 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 00:08:43,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 00:08:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-03-04 00:08:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2025-03-04 00:08:43,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 104 states have (on average 1.4807692307692308) internal successors, (154), 104 states have internal predecessors, (154), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-04 00:08:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2025-03-04 00:08:43,522 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 293 [2025-03-04 00:08:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:08:43,522 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2025-03-04 00:08:43,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-04 00:08:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2025-03-04 00:08:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2025-03-04 00:08:43,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:08:43,539 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:08:43,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 00:08:43,740 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 [2025-03-04 00:08:43,740 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:08:43,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:08:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1657974608, now seen corresponding path program 1 times [2025-03-04 00:08:43,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:08:43,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234529005] [2025-03-04 00:08:43,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:08:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:08:43,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 293 statements into 1 equivalence classes. [2025-03-04 00:08:43,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 293 of 293 statements. [2025-03-04 00:08:43,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:08:43,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:08:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-04 00:08:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:08:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234529005] [2025-03-04 00:08:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234529005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 00:08:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 00:08:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 00:08:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240811675] [2025-03-04 00:08:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 00:08:44,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 00:08:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:08:44,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 00:08:44,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 00:08:44,295 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-04 00:08:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:08:44,415 INFO L93 Difference]: Finished difference Result 368 states and 594 transitions. [2025-03-04 00:08:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 00:08:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 293 [2025-03-04 00:08:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:08:44,419 INFO L225 Difference]: With dead ends: 368 [2025-03-04 00:08:44,420 INFO L226 Difference]: Without dead ends: 220 [2025-03-04 00:08:44,421 INFO L434 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 [2025-03-04 00:08:44,422 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 102 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 00:08:44,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 499 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 00:08:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-03-04 00:08:44,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2025-03-04 00:08:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 155 states have (on average 1.4838709677419355) internal successors, (230), 156 states have internal predecessors, (230), 59 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2025-03-04 00:08:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 348 transitions. [2025-03-04 00:08:44,450 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 348 transitions. Word has length 293 [2025-03-04 00:08:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:08:44,451 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 348 transitions. [2025-03-04 00:08:44,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-04 00:08:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 348 transitions. [2025-03-04 00:08:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-03-04 00:08:44,456 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:08:44,456 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:08:44,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 00:08:44,456 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:08:44,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:08:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1302348261, now seen corresponding path program 1 times [2025-03-04 00:08:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:08:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676808731] [2025-03-04 00:08:44,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:08:44,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:08:44,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-04 00:08:44,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-04 00:08:44,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:08:44,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:08:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-04 00:08:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:08:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676808731] [2025-03-04 00:08:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676808731] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 00:08:45,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 00:08:45,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 00:08:45,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027500643] [2025-03-04 00:08:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 00:08:45,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 00:08:45,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:08:45,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 00:08:45,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 00:08:45,861 INFO L87 Difference]: Start difference. First operand 217 states and 348 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-04 00:08:46,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:08:46,506 INFO L93 Difference]: Finished difference Result 981 states and 1569 transitions. [2025-03-04 00:08:46,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 00:08:46,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 294 [2025-03-04 00:08:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:08:46,515 INFO L225 Difference]: With dead ends: 981 [2025-03-04 00:08:46,515 INFO L226 Difference]: Without dead ends: 767 [2025-03-04 00:08:46,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 00:08:46,517 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 735 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 00:08:46,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 751 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 00:08:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2025-03-04 00:08:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 367. [2025-03-04 00:08:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 283 states have (on average 1.519434628975265) internal successors, (430), 286 states have internal predecessors, (430), 79 states have call successors, (79), 4 states have call predecessors, (79), 4 states have return successors, (79), 76 states have call predecessors, (79), 79 states have call successors, (79) [2025-03-04 00:08:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 588 transitions. [2025-03-04 00:08:46,564 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 588 transitions. Word has length 294 [2025-03-04 00:08:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:08:46,565 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 588 transitions. [2025-03-04 00:08:46,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-04 00:08:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 588 transitions. [2025-03-04 00:08:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-03-04 00:08:46,569 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:08:46,570 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:08:46,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 00:08:46,570 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:08:46,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:08:46,571 INFO L85 PathProgramCache]: Analyzing trace with hash 509056453, now seen corresponding path program 1 times [2025-03-04 00:08:46,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:08:46,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366312359] [2025-03-04 00:08:46,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:08:46,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:08:46,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-04 00:08:47,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-04 00:08:47,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:08:47,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:08:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 81 proven. 51 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-04 00:08:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:08:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366312359] [2025-03-04 00:08:48,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366312359] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:08:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629682183] [2025-03-04 00:08:48,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:08:48,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:08:48,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:08:48,057 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) [2025-03-04 00:08:48,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 00:08:48,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-04 00:08:48,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-04 00:08:48,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:08:48,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:08:48,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 00:08:48,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:08:50,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1658 proven. 66 refuted. 0 times theorem prover too weak. 2236 trivial. 0 not checked. [2025-03-04 00:08:50,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:08:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 192 proven. 69 refuted. 0 times theorem prover too weak. 3699 trivial. 0 not checked. [2025-03-04 00:08:52,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629682183] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:08:52,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:08:52,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2025-03-04 00:08:52,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550951908] [2025-03-04 00:08:52,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:08:52,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-04 00:08:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:08:52,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-04 00:08:52,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2025-03-04 00:08:52,492 INFO L87 Difference]: Start difference. First operand 367 states and 588 transitions. Second operand has 33 states, 31 states have (on average 6.806451612903226) internal successors, (211), 30 states have internal predecessors, (211), 10 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) [2025-03-04 00:09:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:09:22,375 INFO L93 Difference]: Finished difference Result 11784 states and 18068 transitions. [2025-03-04 00:09:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2025-03-04 00:09:22,375 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 6.806451612903226) internal successors, (211), 30 states have internal predecessors, (211), 10 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) Word has length 294 [2025-03-04 00:09:22,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:09:22,493 INFO L225 Difference]: With dead ends: 11784 [2025-03-04 00:09:22,494 INFO L226 Difference]: Without dead ends: 11420 [2025-03-04 00:09:22,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39397 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=13629, Invalid=72513, Unknown=0, NotChecked=0, Total=86142 [2025-03-04 00:09:22,533 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 11866 mSDsluCounter, 6661 mSDsCounter, 0 mSdLazyCounter, 7562 mSolverCounterSat, 4737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11997 SdHoareTripleChecker+Valid, 7120 SdHoareTripleChecker+Invalid, 12299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4737 IncrementalHoareTripleChecker+Valid, 7562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2025-03-04 00:09:22,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11997 Valid, 7120 Invalid, 12299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4737 Valid, 7562 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2025-03-04 00:09:22,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11420 states. [2025-03-04 00:09:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11420 to 4736. [2025-03-04 00:09:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4736 states, 3671 states have (on average 1.4677199673113592) internal successors, (5388), 3735 states have internal predecessors, (5388), 973 states have call successors, (973), 91 states have call predecessors, (973), 91 states have return successors, (973), 909 states have call predecessors, (973), 973 states have call successors, (973) [2025-03-04 00:09:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4736 states to 4736 states and 7334 transitions. [2025-03-04 00:09:23,334 INFO L78 Accepts]: Start accepts. Automaton has 4736 states and 7334 transitions. Word has length 294 [2025-03-04 00:09:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:09:23,335 INFO L471 AbstractCegarLoop]: Abstraction has 4736 states and 7334 transitions. [2025-03-04 00:09:23,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 6.806451612903226) internal successors, (211), 30 states have internal predecessors, (211), 10 states have call successors, (135), 4 states have call predecessors, (135), 8 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) [2025-03-04 00:09:23,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4736 states and 7334 transitions. [2025-03-04 00:09:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-03-04 00:09:23,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:09:23,351 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:09:23,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 00:09:23,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 00:09:23,552 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:09:23,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:09:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1081879632, now seen corresponding path program 1 times [2025-03-04 00:09:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:09:23,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935828777] [2025-03-04 00:09:23,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:09:23,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:09:23,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-04 00:09:23,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-04 00:09:23,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:09:23,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:09:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-04 00:09:23,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:09:23,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935828777] [2025-03-04 00:09:23,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935828777] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 00:09:23,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 00:09:23,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 00:09:23,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7264371] [2025-03-04 00:09:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 00:09:23,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 00:09:23,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:09:23,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 00:09:23,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 00:09:23,818 INFO L87 Difference]: Start difference. First operand 4736 states and 7334 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-04 00:09:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:09:24,662 INFO L93 Difference]: Finished difference Result 10194 states and 15769 transitions. [2025-03-04 00:09:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 00:09:24,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 294 [2025-03-04 00:09:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:09:24,696 INFO L225 Difference]: With dead ends: 10194 [2025-03-04 00:09:24,697 INFO L226 Difference]: Without dead ends: 6560 [2025-03-04 00:09:24,712 INFO L434 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 [2025-03-04 00:09:24,714 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 106 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 00:09:24,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 482 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 00:09:24,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2025-03-04 00:09:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 5286. [2025-03-04 00:09:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 4220 states have (on average 1.4898104265402843) internal successors, (6287), 4284 states have internal predecessors, (6287), 973 states have call successors, (973), 92 states have call predecessors, (973), 92 states have return successors, (973), 909 states have call predecessors, (973), 973 states have call successors, (973) [2025-03-04 00:09:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8233 transitions. [2025-03-04 00:09:25,536 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8233 transitions. Word has length 294 [2025-03-04 00:09:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:09:25,540 INFO L471 AbstractCegarLoop]: Abstraction has 5286 states and 8233 transitions. [2025-03-04 00:09:25,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-04 00:09:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8233 transitions. [2025-03-04 00:09:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-03-04 00:09:25,552 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:09:25,553 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:09:25,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 00:09:25,553 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:09:25,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:09:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash -194375951, now seen corresponding path program 1 times [2025-03-04 00:09:25,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:09:25,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297607423] [2025-03-04 00:09:25,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:09:25,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:09:25,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-04 00:09:25,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-04 00:09:25,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:09:25,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:09:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 42 proven. 90 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-04 00:09:26,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:09:26,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297607423] [2025-03-04 00:09:26,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297607423] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:09:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507039689] [2025-03-04 00:09:26,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:09:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:09:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:09:26,461 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) [2025-03-04 00:09:26,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 00:09:26,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-04 00:09:26,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-04 00:09:26,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:09:26,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:09:26,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 00:09:26,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:09:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1752 proven. 90 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2025-03-04 00:09:27,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:09:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 42 proven. 90 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-04 00:09:27,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507039689] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:09:27,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:09:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-04 00:09:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113338520] [2025-03-04 00:09:27,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:09:27,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 00:09:27,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:09:27,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 00:09:27,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-04 00:09:27,724 INFO L87 Difference]: Start difference. First operand 5286 states and 8233 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2025-03-04 00:09:28,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:09:28,652 INFO L93 Difference]: Finished difference Result 9022 states and 13845 transitions. [2025-03-04 00:09:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 00:09:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 294 [2025-03-04 00:09:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:09:28,683 INFO L225 Difference]: With dead ends: 9022 [2025-03-04 00:09:28,686 INFO L226 Difference]: Without dead ends: 4900 [2025-03-04 00:09:28,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 585 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-04 00:09:28,701 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 205 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 00:09:28,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 500 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 00:09:28,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4900 states. [2025-03-04 00:09:29,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4900 to 4678. [2025-03-04 00:09:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4678 states, 3599 states have (on average 1.4231731036399) internal successors, (5122), 3663 states have internal predecessors, (5122), 973 states have call successors, (973), 105 states have call predecessors, (973), 105 states have return successors, (973), 909 states have call predecessors, (973), 973 states have call successors, (973) [2025-03-04 00:09:29,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4678 states to 4678 states and 7068 transitions. [2025-03-04 00:09:29,985 INFO L78 Accepts]: Start accepts. Automaton has 4678 states and 7068 transitions. Word has length 294 [2025-03-04 00:09:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:09:29,989 INFO L471 AbstractCegarLoop]: Abstraction has 4678 states and 7068 transitions. [2025-03-04 00:09:29,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (75), 2 states have call predecessors, (75), 4 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2025-03-04 00:09:29,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4678 states and 7068 transitions. [2025-03-04 00:09:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-03-04 00:09:30,002 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:09:30,002 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:09:30,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 00:09:30,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:09:30,203 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:09:30,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:09:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1941134343, now seen corresponding path program 1 times [2025-03-04 00:09:30,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:09:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38968478] [2025-03-04 00:09:30,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:09:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:09:30,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-04 00:09:31,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-04 00:09:31,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:09:31,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:09:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 156 proven. 222 refuted. 0 times theorem prover too weak. 3582 trivial. 0 not checked. [2025-03-04 00:09:33,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:09:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38968478] [2025-03-04 00:09:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38968478] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:09:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891347926] [2025-03-04 00:09:33,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:09:33,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:09:33,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:09:33,269 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) [2025-03-04 00:09:33,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 00:09:33,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 294 statements into 1 equivalence classes. [2025-03-04 00:09:33,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 294 of 294 statements. [2025-03-04 00:09:33,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:09:33,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:09:33,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-04 00:09:33,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:09:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2284 proven. 615 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2025-03-04 00:09:38,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:09:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 177 proven. 570 refuted. 0 times theorem prover too weak. 3213 trivial. 0 not checked. [2025-03-04 00:09:42,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891347926] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:09:42,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:09:42,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 25] total 57 [2025-03-04 00:09:42,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360148086] [2025-03-04 00:09:42,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:09:42,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-04 00:09:42,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:09:42,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-04 00:09:42,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=2456, Unknown=0, NotChecked=0, Total=3192 [2025-03-04 00:09:42,421 INFO L87 Difference]: Start difference. First operand 4678 states and 7068 transitions. Second operand has 57 states, 53 states have (on average 4.113207547169812) internal successors, (218), 51 states have internal predecessors, (218), 19 states have call successors, (135), 9 states have call predecessors, (135), 19 states have return successors, (135), 19 states have call predecessors, (135), 19 states have call successors, (135) [2025-03-04 00:10:01,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []