./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_mul_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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/array-industry-pattern/array_mul_init.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 09dc663f7f76eee13b6af61297831e3fbddcb16c16389bf8d94f2d27048733d0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 13:29:11,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 13:29:11,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 13:29:11,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 13:29:11,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 13:29:11,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 13:29:11,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 13:29:11,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 13:29:11,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 13:29:11,189 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 13:29:11,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 13:29:11,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 13:29:11,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 13:29:11,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 13:29:11,190 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 13:29:11,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 13:29:11,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 13:29:11,190 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 13:29:11,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 13:29:11,191 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 13:29:11,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 13:29:11,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:29:11,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 13:29:11,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 13:29:11,192 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 13:29:11,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 13:29:11,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 13:29:11,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 13:29:11,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 13:29:11,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 13:29:11,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 13:29:11,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 13:29:11,193 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 -> 09dc663f7f76eee13b6af61297831e3fbddcb16c16389bf8d94f2d27048733d0 [2025-03-16 13:29:11,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 13:29:11,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 13:29:11,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 13:29:11,416 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 13:29:11,416 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 13:29:11,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_mul_init.i [2025-03-16 13:29:12,555 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84a81bf00/e7eacc1112ee4003be93c15f6fd805ab/FLAG87e550f95 [2025-03-16 13:29:12,775 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 13:29:12,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i [2025-03-16 13:29:12,784 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84a81bf00/e7eacc1112ee4003be93c15f6fd805ab/FLAG87e550f95 [2025-03-16 13:29:13,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84a81bf00/e7eacc1112ee4003be93c15f6fd805ab [2025-03-16 13:29:13,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 13:29:13,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 13:29:13,123 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 13:29:13,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 13:29:13,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 13:29:13,127 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68001dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13, skipping insertion in model container [2025-03-16 13:29:13,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 13:29:13,218 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/array-industry-pattern/array_mul_init.i[807,820] [2025-03-16 13:29:13,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:29:13,233 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 13:29:13,239 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/array-industry-pattern/array_mul_init.i[807,820] [2025-03-16 13:29:13,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:29:13,252 INFO L204 MainTranslator]: Completed translation [2025-03-16 13:29:13,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13 WrapperNode [2025-03-16 13:29:13,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 13:29:13,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 13:29:13,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 13:29:13,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 13:29:13,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,271 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2025-03-16 13:29:13,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 13:29:13,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 13:29:13,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 13:29:13,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 13:29:13,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,278 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,284 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 4, 5]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2025-03-16 13:29:13,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,288 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,289 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 13:29:13,291 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 13:29:13,291 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 13:29:13,291 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 13:29:13,291 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (1/1) ... [2025-03-16 13:29:13,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:29:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:29:13,314 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) [2025-03-16 13:29:13,323 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 [2025-03-16 13:29:13,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 13:29:13,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 13:29:13,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 13:29:13,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 13:29:13,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 13:29:13,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 13:29:13,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 13:29:13,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-16 13:29:13,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 13:29:13,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 13:29:13,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 13:29:13,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 13:29:13,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 13:29:13,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 13:29:13,382 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 13:29:13,383 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 13:29:13,476 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-16 13:29:13,477 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 13:29:13,482 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 13:29:13,483 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 13:29:13,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:29:13 BoogieIcfgContainer [2025-03-16 13:29:13,483 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 13:29:13,485 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 13:29:13,485 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 13:29:13,488 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 13:29:13,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 01:29:13" (1/3) ... [2025-03-16 13:29:13,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356fd925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:29:13, skipping insertion in model container [2025-03-16 13:29:13,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:29:13" (2/3) ... [2025-03-16 13:29:13,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356fd925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:29:13, skipping insertion in model container [2025-03-16 13:29:13,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:29:13" (3/3) ... [2025-03-16 13:29:13,490 INFO L128 eAbstractionObserver]: Analyzing ICFG array_mul_init.i [2025-03-16 13:29:13,501 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 13:29:13,503 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_mul_init.i that has 1 procedures, 14 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-16 13:29:13,536 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 13:29:13,543 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;@1795a7c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 13:29:13,543 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 13:29:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-16 13:29:13,549 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:29:13,549 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:29:13,550 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:29:13,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:29:13,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1521978884, now seen corresponding path program 1 times [2025-03-16 13:29:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:29:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674439577] [2025-03-16 13:29:13,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:29:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:29:13,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-16 13:29:13,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-16 13:29:13,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:29:13,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:29:13,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:29:13,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674439577] [2025-03-16 13:29:13,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674439577] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:29:13,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:29:13,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 13:29:13,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298179474] [2025-03-16 13:29:13,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:29:13,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 13:29:13,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:29:13,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 13:29:13,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 13:29:13,746 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:29:13,802 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2025-03-16 13:29:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 13:29:13,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-16 13:29:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:29:13,808 INFO L225 Difference]: With dead ends: 37 [2025-03-16 13:29:13,809 INFO L226 Difference]: Without dead ends: 23 [2025-03-16 13:29:13,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 13:29:13,814 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:29:13,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:29:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-16 13:29:13,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2025-03-16 13:29:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2025-03-16 13:29:13,838 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2025-03-16 13:29:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:29:13,838 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2025-03-16 13:29:13,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2025-03-16 13:29:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-16 13:29:13,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:29:13,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:29:13,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 13:29:13,839 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:29:13,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:29:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1638602331, now seen corresponding path program 1 times [2025-03-16 13:29:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:29:13,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437806011] [2025-03-16 13:29:13,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:29:13,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:29:13,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-16 13:29:13,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-16 13:29:13,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:29:13,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 13:29:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:29:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437806011] [2025-03-16 13:29:13,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437806011] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:29:13,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714345841] [2025-03-16 13:29:13,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:29:13,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:29:13,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:29:13,933 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) [2025-03-16 13:29:13,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 13:29:13,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-16 13:29:13,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-16 13:29:13,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:29:13,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:13,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 13:29:13,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:29:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 13:29:14,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:29:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 13:29:14,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714345841] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:29:14,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:29:14,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-16 13:29:14,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056506802] [2025-03-16 13:29:14,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:29:14,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 13:29:14,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:29:14,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 13:29:14,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 13:29:14,048 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:29:14,134 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2025-03-16 13:29:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 13:29:14,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-16 13:29:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:29:14,137 INFO L225 Difference]: With dead ends: 59 [2025-03-16 13:29:14,137 INFO L226 Difference]: Without dead ends: 48 [2025-03-16 13:29:14,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 13:29:14,138 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 70 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:29:14,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 33 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:29:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-16 13:29:14,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 26. [2025-03-16 13:29:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2025-03-16 13:29:14,146 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 12 [2025-03-16 13:29:14,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:29:14,146 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2025-03-16 13:29:14,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2025-03-16 13:29:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-03-16 13:29:14,148 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:29:14,148 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:29:14,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 13:29:14,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:29:14,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:29:14,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:29:14,349 INFO L85 PathProgramCache]: Analyzing trace with hash -855709380, now seen corresponding path program 2 times [2025-03-16 13:29:14,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:29:14,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458312620] [2025-03-16 13:29:14,349 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:29:14,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:29:14,365 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-16 13:29:14,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-16 13:29:14,383 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:29:14,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 13:29:14,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:29:14,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458312620] [2025-03-16 13:29:14,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458312620] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:29:14,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279228475] [2025-03-16 13:29:14,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:29:14,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:29:14,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:29:14,556 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) [2025-03-16 13:29:14,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 13:29:14,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-16 13:29:14,645 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-03-16 13:29:14,645 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:29:14,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:14,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 13:29:14,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:29:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 13:29:14,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:29:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 13:29:14,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279228475] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:29:14,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:29:14,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2025-03-16 13:29:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709968819] [2025-03-16 13:29:14,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:29:14,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 13:29:14,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:29:14,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 13:29:14,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-16 13:29:14,727 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:29:14,857 INFO L93 Difference]: Finished difference Result 134 states and 174 transitions. [2025-03-16 13:29:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 13:29:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-03-16 13:29:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:29:14,859 INFO L225 Difference]: With dead ends: 134 [2025-03-16 13:29:14,859 INFO L226 Difference]: Without dead ends: 114 [2025-03-16 13:29:14,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-16 13:29:14,859 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 250 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:29:14,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 63 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:29:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-16 13:29:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 50. [2025-03-16 13:29:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2025-03-16 13:29:14,870 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 24 [2025-03-16 13:29:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:29:14,870 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2025-03-16 13:29:14,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2025-03-16 13:29:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-16 13:29:14,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:29:14,871 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:29:14,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 13:29:15,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-16 13:29:15,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:29:15,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:29:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1043593244, now seen corresponding path program 3 times [2025-03-16 13:29:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:29:15,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592439603] [2025-03-16 13:29:15,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:29:15,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:29:15,106 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 11 equivalence classes. [2025-03-16 13:29:15,148 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 33 of 48 statements. [2025-03-16 13:29:15,149 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-16 13:29:15,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-16 13:29:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:29:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592439603] [2025-03-16 13:29:15,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592439603] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:29:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235853948] [2025-03-16 13:29:15,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:29:15,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:29:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:29:15,398 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) [2025-03-16 13:29:15,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 13:29:15,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 11 equivalence classes. [2025-03-16 13:29:16,373 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 33 of 48 statements. [2025-03-16 13:29:16,374 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-16 13:29:16,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:16,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-16 13:29:16,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:29:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-16 13:29:16,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:29:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2025-03-16 13:29:16,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235853948] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:29:16,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:29:16,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 25 [2025-03-16 13:29:16,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318228258] [2025-03-16 13:29:16,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:29:16,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-16 13:29:16,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:29:16,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-16 13:29:16,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2025-03-16 13:29:16,636 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:29:16,882 INFO L93 Difference]: Finished difference Result 284 states and 366 transitions. [2025-03-16 13:29:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-16 13:29:16,882 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-03-16 13:29:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:29:16,884 INFO L225 Difference]: With dead ends: 284 [2025-03-16 13:29:16,884 INFO L226 Difference]: Without dead ends: 246 [2025-03-16 13:29:16,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2025-03-16 13:29:16,885 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 512 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:29:16,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 141 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:29:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-03-16 13:29:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 98. [2025-03-16 13:29:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.268041237113402) internal successors, (123), 97 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2025-03-16 13:29:16,893 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 48 [2025-03-16 13:29:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:29:16,893 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2025-03-16 13:29:16,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2025-03-16 13:29:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-16 13:29:16,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:29:16,895 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:29:16,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 13:29:17,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:29:17,099 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:29:17,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:29:17,100 INFO L85 PathProgramCache]: Analyzing trace with hash 952643036, now seen corresponding path program 4 times [2025-03-16 13:29:17,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:29:17,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207199807] [2025-03-16 13:29:17,101 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:29:17,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:29:17,137 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 96 statements into 2 equivalence classes. [2025-03-16 13:29:17,157 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 96 of 96 statements. [2025-03-16 13:29:17,157 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 13:29:17,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-03-16 13:29:17,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:29:17,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207199807] [2025-03-16 13:29:17,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207199807] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:29:17,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832403303] [2025-03-16 13:29:17,857 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:29:17,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:29:17,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:29:17,861 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) [2025-03-16 13:29:17,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 13:29:17,953 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 96 statements into 2 equivalence classes. [2025-03-16 13:29:18,012 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 96 of 96 statements. [2025-03-16 13:29:18,012 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 13:29:18,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:18,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-16 13:29:18,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:29:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-03-16 13:29:18,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:29:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-03-16 13:29:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832403303] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:29:18,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:29:18,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-03-16 13:29:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590535462] [2025-03-16 13:29:18,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:29:18,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-16 13:29:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:29:18,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-16 13:29:18,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-16 13:29:18,769 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 48 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 48 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:29:19,448 INFO L93 Difference]: Finished difference Result 584 states and 750 transitions. [2025-03-16 13:29:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-16 13:29:19,448 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 48 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2025-03-16 13:29:19,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:29:19,450 INFO L225 Difference]: With dead ends: 584 [2025-03-16 13:29:19,450 INFO L226 Difference]: Without dead ends: 510 [2025-03-16 13:29:19,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-16 13:29:19,455 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 1156 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 13:29:19,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 279 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 13:29:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2025-03-16 13:29:19,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 194. [2025-03-16 13:29:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.2590673575129534) internal successors, (243), 193 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 243 transitions. [2025-03-16 13:29:19,469 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 243 transitions. Word has length 96 [2025-03-16 13:29:19,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:29:19,469 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 243 transitions. [2025-03-16 13:29:19,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.9791666666666665) internal successors, (143), 48 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 13:29:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 243 transitions. [2025-03-16 13:29:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-16 13:29:19,474 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:29:19,474 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:29:19,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 13:29:19,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:29:19,675 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:29:19,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:29:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash 429979996, now seen corresponding path program 5 times [2025-03-16 13:29:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:29:19,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782931574] [2025-03-16 13:29:19,675 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 13:29:19,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:29:19,737 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 192 statements into 47 equivalence classes. [2025-03-16 13:29:20,908 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 192 of 192 statements. [2025-03-16 13:29:20,909 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-16 13:29:20,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:29:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2025-03-16 13:29:22,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:29:22,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782931574] [2025-03-16 13:29:22,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782931574] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:29:22,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992124084] [2025-03-16 13:29:22,925 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 13:29:22,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:29:22,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:29:22,927 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) [2025-03-16 13:29:22,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 13:29:23,073 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 192 statements into 47 equivalence classes.