./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum_const_m4.c --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-crafted/zero_sum_const_m4.c -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 aec2f9127d2f09ac657db5f4ff454a031f6027c12ee4edfdaac8d9dd392f7955 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 13:43:27,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 13:43:27,123 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 13:43:27,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 13:43:27,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 13:43:27,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 13:43:27,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 13:43:27,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 13:43:27,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 13:43:27,146 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 13:43:27,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 13:43:27,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 13:43:27,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 13:43:27,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 13:43:27,147 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 13:43:27,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 13:43:27,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 13:43:27,147 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 13:43:27,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 13:43:27,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 13:43:27,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 13:43:27,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 13:43:27,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 13:43:27,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 13:43:27,148 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 13:43:27,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 13:43:27,149 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 13:43:27,149 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 13:43:27,149 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 13:43:27,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 13:43:27,149 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 13:43:27,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 13:43:27,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:43:27,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 13:43:27,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 13:43:27,150 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 -> aec2f9127d2f09ac657db5f4ff454a031f6027c12ee4edfdaac8d9dd392f7955 [2025-03-16 13:43:27,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 13:43:27,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 13:43:27,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 13:43:27,376 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 13:43:27,376 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 13:43:27,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_const_m4.c [2025-03-16 13:43:28,478 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11205a20/8d504abcb95845d09cb35d5c8783f862/FLAGcf7c6971e [2025-03-16 13:43:28,685 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 13:43:28,697 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const_m4.c [2025-03-16 13:43:28,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11205a20/8d504abcb95845d09cb35d5c8783f862/FLAGcf7c6971e [2025-03-16 13:43:29,036 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11205a20/8d504abcb95845d09cb35d5c8783f862 [2025-03-16 13:43:29,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 13:43:29,039 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 13:43:29,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 13:43:29,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 13:43:29,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 13:43:29,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb92a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29, skipping insertion in model container [2025-03-16 13:43:29,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 13:43:29,136 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-crafted/zero_sum_const_m4.c[408,421] [2025-03-16 13:43:29,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:43:29,156 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 13:43:29,162 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-crafted/zero_sum_const_m4.c[408,421] [2025-03-16 13:43:29,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:43:29,182 INFO L204 MainTranslator]: Completed translation [2025-03-16 13:43:29,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29 WrapperNode [2025-03-16 13:43:29,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 13:43:29,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 13:43:29,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 13:43:29,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 13:43:29,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,206 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2025-03-16 13:43:29,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 13:43:29,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 13:43:29,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 13:43:29,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 13:43:29,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,220 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-16 13:43:29,220 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,223 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 13:43:29,228 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 13:43:29,228 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 13:43:29,228 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 13:43:29,228 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (1/1) ... [2025-03-16 13:43:29,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:43:29,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:29,254 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 13:43:29,256 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 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-16 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 13:43:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 13:43:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 13:43:29,329 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 13:43:29,331 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 13:43:29,483 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-16 13:43:29,484 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 13:43:29,493 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 13:43:29,493 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 13:43:29,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:43:29 BoogieIcfgContainer [2025-03-16 13:43:29,493 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 13:43:29,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 13:43:29,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 13:43:29,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 13:43:29,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 01:43:29" (1/3) ... [2025-03-16 13:43:29,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d34746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:43:29, skipping insertion in model container [2025-03-16 13:43:29,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:43:29" (2/3) ... [2025-03-16 13:43:29,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d34746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:43:29, skipping insertion in model container [2025-03-16 13:43:29,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:43:29" (3/3) ... [2025-03-16 13:43:29,502 INFO L128 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m4.c [2025-03-16 13:43:29,513 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 13:43:29,514 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum_const_m4.c that has 1 procedures, 18 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2025-03-16 13:43:29,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 13:43:29,567 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;@3101be61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 13:43:29,568 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 13:43:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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 13:43:29,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-16 13:43:29,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:29,575 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:29,575 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:29,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:29,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1715680082, now seen corresponding path program 1 times [2025-03-16 13:43:29,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:29,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832162863] [2025-03-16 13:43:29,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:43:29,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:29,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-16 13:43:29,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-16 13:43:29,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:43:29,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:29,746 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 13:43:29,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:29,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832162863] [2025-03-16 13:43:29,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832162863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:43:29,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:43:29,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 13:43:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105231356] [2025-03-16 13:43:29,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:43:29,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 13:43:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:29,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 13:43:29,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 13:43:29,769 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 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 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13:43:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:29,823 INFO L93 Difference]: Finished difference Result 34 states and 53 transitions. [2025-03-16 13:43:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 13:43:29,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2025-03-16 13:43:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:29,829 INFO L225 Difference]: With dead ends: 34 [2025-03-16 13:43:29,830 INFO L226 Difference]: Without dead ends: 15 [2025-03-16 13:43:29,833 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 [2025-03-16 13:43:29,836 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:29,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:43:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-03-16 13:43:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-03-16 13:43:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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 13:43:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2025-03-16 13:43:29,856 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 13 [2025-03-16 13:43:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:29,856 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2025-03-16 13:43:29,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13:43:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2025-03-16 13:43:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-16 13:43:29,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:29,857 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:29,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 13:43:29,857 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:29,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:29,862 INFO L85 PathProgramCache]: Analyzing trace with hash 495531285, now seen corresponding path program 1 times [2025-03-16 13:43:29,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:29,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449076249] [2025-03-16 13:43:29,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:43:29,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:29,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-16 13:43:29,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-16 13:43:29,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:43:29,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 13:43:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449076249] [2025-03-16 13:43:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449076249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:43:29,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:43:29,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 13:43:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945397743] [2025-03-16 13:43:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:43:29,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 13:43:29,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:29,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 13:43:29,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:43:29,947 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 13:43:29,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:29,992 INFO L93 Difference]: Finished difference Result 33 states and 55 transitions. [2025-03-16 13:43:29,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 13:43:29,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-03-16 13:43:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:29,993 INFO L225 Difference]: With dead ends: 33 [2025-03-16 13:43:29,993 INFO L226 Difference]: Without dead ends: 23 [2025-03-16 13:43:29,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:43:29,994 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:29,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:43:29,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-16 13:43:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-03-16 13:43:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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 13:43:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2025-03-16 13:43:29,998 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2025-03-16 13:43:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:29,998 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2025-03-16 13:43:29,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 13:43:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2025-03-16 13:43:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-16 13:43:29,999 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:29,999 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:29,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 13:43:29,999 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:29,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:30,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1928715755, now seen corresponding path program 1 times [2025-03-16 13:43:30,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:30,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990624900] [2025-03-16 13:43:30,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:43:30,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:30,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-16 13:43:30,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-16 13:43:30,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:43:30,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-16 13:43:30,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990624900] [2025-03-16 13:43:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990624900] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:30,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143869850] [2025-03-16 13:43:30,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:43:30,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:30,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:30,137 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 13:43:30,138 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 13:43:30,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-16 13:43:30,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-16 13:43:30,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:43:30,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:30,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:43:30,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-16 13:43:30,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:43:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-16 13:43:30,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143869850] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:43:30,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:43:30,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-16 13:43:30,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140302463] [2025-03-16 13:43:30,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:43:30,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 13:43:30,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:30,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 13:43:30,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-03-16 13:43:30,270 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 13:43:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:30,321 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2025-03-16 13:43:30,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 13:43:30,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 22 [2025-03-16 13:43:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:30,322 INFO L225 Difference]: With dead ends: 43 [2025-03-16 13:43:30,323 INFO L226 Difference]: Without dead ends: 24 [2025-03-16 13:43:30,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-03-16 13:43:30,324 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:30,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:43:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-16 13:43:30,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-03-16 13:43:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 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 13:43:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2025-03-16 13:43:30,330 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 22 [2025-03-16 13:43:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:30,330 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2025-03-16 13:43:30,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 13:43:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2025-03-16 13:43:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-16 13:43:30,331 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:30,331 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:30,338 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 13:43:30,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:30,536 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:30,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1371587186, now seen corresponding path program 2 times [2025-03-16 13:43:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:30,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262356097] [2025-03-16 13:43:30,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:43:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:30,544 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-16 13:43:30,550 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-16 13:43:30,550 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:43:30,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 13:43:30,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:30,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262356097] [2025-03-16 13:43:30,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262356097] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:30,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093223871] [2025-03-16 13:43:30,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:43:30,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:30,625 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 13:43:30,626 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 13:43:30,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-16 13:43:30,678 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-16 13:43:30,678 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:43:30,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:30,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:43:30,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 13:43:30,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:43:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 13:43:30,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093223871] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:43:30,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:43:30,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-16 13:43:30,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52911317] [2025-03-16 13:43:30,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:43:30,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 13:43:30,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:30,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 13:43:30,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-16 13:43:30,774 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 13:43:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:30,843 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2025-03-16 13:43:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 13:43:30,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 23 [2025-03-16 13:43:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:30,844 INFO L225 Difference]: With dead ends: 49 [2025-03-16 13:43:30,844 INFO L226 Difference]: Without dead ends: 32 [2025-03-16 13:43:30,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-16 13:43:30,845 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:30,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:43:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-03-16 13:43:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-03-16 13:43:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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 13:43:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2025-03-16 13:43:30,849 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 23 [2025-03-16 13:43:30,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:30,849 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2025-03-16 13:43:30,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 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 13:43:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2025-03-16 13:43:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-16 13:43:30,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:30,850 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:30,855 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 13:43:31,051 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 [2025-03-16 13:43:31,051 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:31,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1843024014, now seen corresponding path program 3 times [2025-03-16 13:43:31,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:31,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501026457] [2025-03-16 13:43:31,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:43:31,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:31,059 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-16 13:43:31,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-16 13:43:31,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-16 13:43:31,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:43:32,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:32,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501026457] [2025-03-16 13:43:32,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501026457] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:32,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820598092] [2025-03-16 13:43:32,891 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:43:32,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:32,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:32,894 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 13:43:32,895 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 13:43:32,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 2 equivalence classes. [2025-03-16 13:43:32,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-16 13:43:32,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-16 13:43:32,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:32,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-03-16 13:43:32,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:33,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-16 13:43:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:43:33,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:43:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 13:43:34,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820598092] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:43:34,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:43:34,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 53 [2025-03-16 13:43:34,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393888182] [2025-03-16 13:43:34,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:43:34,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-16 13:43:34,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:34,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-16 13:43:34,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2601, Unknown=0, NotChecked=0, Total=2756 [2025-03-16 13:43:34,255 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 53 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 53 states have internal predecessors, (75), 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 13:43:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:34,779 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2025-03-16 13:43:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-16 13:43:34,780 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 53 states have internal predecessors, (75), 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 31 [2025-03-16 13:43:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:34,781 INFO L225 Difference]: With dead ends: 57 [2025-03-16 13:43:34,781 INFO L226 Difference]: Without dead ends: 54 [2025-03-16 13:43:34,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=2601, Unknown=0, NotChecked=0, Total=2756 [2025-03-16 13:43:34,782 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:34,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 13:43:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-03-16 13:43:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2025-03-16 13:43:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 51 states have internal predecessors, (67), 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 13:43:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2025-03-16 13:43:34,789 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 31 [2025-03-16 13:43:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:34,789 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2025-03-16 13:43:34,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 53 states have internal predecessors, (75), 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 13:43:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2025-03-16 13:43:34,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-16 13:43:34,789 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:34,789 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:34,795 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 13:43:34,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:34,990 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:34,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:34,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1299201333, now seen corresponding path program 4 times [2025-03-16 13:43:34,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:34,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971488786] [2025-03-16 13:43:34,991 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:43:34,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:34,996 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-03-16 13:43:35,004 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 30 of 32 statements. [2025-03-16 13:43:35,005 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-16 13:43:35,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 13:43:35,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:35,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971488786] [2025-03-16 13:43:35,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971488786] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:35,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331140411] [2025-03-16 13:43:35,081 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:43:35,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:35,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:35,083 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 13:43:35,085 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 13:43:35,119 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-03-16 13:43:35,134 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 30 of 32 statements. [2025-03-16 13:43:35,134 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-16 13:43:35,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:35,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 13:43:35,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 13:43:35,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:43:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 13:43:35,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331140411] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:43:35,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:43:35,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-03-16 13:43:35,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4102381] [2025-03-16 13:43:35,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:43:35,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-16 13:43:35,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:35,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-16 13:43:35,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-03-16 13:43:35,255 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 13:43:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:35,475 INFO L93 Difference]: Finished difference Result 111 states and 147 transitions. [2025-03-16 13:43:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 13:43:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 32 [2025-03-16 13:43:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:35,476 INFO L225 Difference]: With dead ends: 111 [2025-03-16 13:43:35,476 INFO L226 Difference]: Without dead ends: 62 [2025-03-16 13:43:35,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-03-16 13:43:35,476 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:35,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:43:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-03-16 13:43:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2025-03-16 13:43:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 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 13:43:35,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2025-03-16 13:43:35,481 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 32 [2025-03-16 13:43:35,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:35,482 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2025-03-16 13:43:35,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 13:43:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2025-03-16 13:43:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-16 13:43:35,482 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:35,482 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:35,490 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 13:43:35,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:35,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:35,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1169149262, now seen corresponding path program 5 times [2025-03-16 13:43:35,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533084619] [2025-03-16 13:43:35,688 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 13:43:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:35,697 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-16 13:43:35,705 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-16 13:43:35,706 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-16 13:43:35,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 13:43:35,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533084619] [2025-03-16 13:43:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533084619] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400566477] [2025-03-16 13:43:35,788 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 13:43:35,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:35,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:35,789 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 13:43:35,791 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 13:43:35,824 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 3 equivalence classes. [2025-03-16 13:43:35,857 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 33 of 33 statements. [2025-03-16 13:43:35,858 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-16 13:43:35,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:35,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 13:43:35,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 13:43:35,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:43:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-16 13:43:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400566477] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:43:35,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:43:35,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-03-16 13:43:35,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893582890] [2025-03-16 13:43:35,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:43:35,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-16 13:43:35,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:35,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-16 13:43:35,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-03-16 13:43:35,946 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 13:43:36,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:36,080 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2025-03-16 13:43:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 13:43:36,080 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 33 [2025-03-16 13:43:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:36,081 INFO L225 Difference]: With dead ends: 62 [2025-03-16 13:43:36,081 INFO L226 Difference]: Without dead ends: 41 [2025-03-16 13:43:36,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2025-03-16 13:43:36,082 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:36,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 8 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:43:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-16 13:43:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-03-16 13:43:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 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 13:43:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-03-16 13:43:36,087 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2025-03-16 13:43:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:36,087 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-03-16 13:43:36,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 13:43:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-03-16 13:43:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-16 13:43:36,089 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:36,089 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:36,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 13:43:36,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:36,290 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:36,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash -397518283, now seen corresponding path program 6 times [2025-03-16 13:43:36,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:36,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919559904] [2025-03-16 13:43:36,290 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 13:43:36,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:36,300 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 3 equivalence classes. [2025-03-16 13:43:36,378 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 40 of 40 statements. [2025-03-16 13:43:36,378 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-16 13:43:36,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:39,266 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:43:39,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919559904] [2025-03-16 13:43:39,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919559904] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:39,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952512544] [2025-03-16 13:43:39,266 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 13:43:39,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:39,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:39,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:43:39,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 13:43:39,300 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 40 statements into 3 equivalence classes. [2025-03-16 13:43:39,320 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 40 of 40 statements. [2025-03-16 13:43:39,320 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-16 13:43:39,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:39,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 106 conjuncts are in the unsatisfiable core [2025-03-16 13:43:39,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 13:43:40,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:43:41,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:43:41,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 89 [2025-03-16 13:43:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 13:43:41,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952512544] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:43:41,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:43:41,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 30, 32] total 89 [2025-03-16 13:43:41,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792861890] [2025-03-16 13:43:41,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:43:41,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2025-03-16 13:43:41,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:41,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2025-03-16 13:43:41,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=7499, Unknown=0, NotChecked=0, Total=7832 [2025-03-16 13:43:41,890 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 89 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 89 states have internal predecessors, (110), 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 13:43:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:44,274 INFO L93 Difference]: Finished difference Result 143 states and 182 transitions. [2025-03-16 13:43:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-16 13:43:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 89 states have internal predecessors, (110), 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 40 [2025-03-16 13:43:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:44,278 INFO L225 Difference]: With dead ends: 143 [2025-03-16 13:43:44,279 INFO L226 Difference]: Without dead ends: 111 [2025-03-16 13:43:44,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3022 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=530, Invalid=11242, Unknown=0, NotChecked=0, Total=11772 [2025-03-16 13:43:44,281 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:44,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 13:43:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-03-16 13:43:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2025-03-16 13:43:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.25) internal successors, (120), 96 states have internal predecessors, (120), 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 13:43:44,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2025-03-16 13:43:44,299 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 40 [2025-03-16 13:43:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:44,299 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2025-03-16 13:43:44,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 89 states have internal predecessors, (110), 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 13:43:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2025-03-16 13:43:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-16 13:43:44,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:44,300 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:44,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 13:43:44,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:44,501 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:44,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 561866862, now seen corresponding path program 7 times [2025-03-16 13:43:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:44,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680971622] [2025-03-16 13:43:44,502 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 13:43:44,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:44,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-16 13:43:44,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-16 13:43:44,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:43:44,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-16 13:43:44,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:44,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680971622] [2025-03-16 13:43:44,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680971622] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:44,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097622560] [2025-03-16 13:43:44,614 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 13:43:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:44,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:44,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:43:44,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 13:43:44,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-16 13:43:44,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-16 13:43:44,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:43:44,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:44,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-16 13:43:44,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-16 13:43:44,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:43:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-16 13:43:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097622560] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:43:44,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:43:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-03-16 13:43:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198318171] [2025-03-16 13:43:44,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:43:44,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-16 13:43:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:44,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-16 13:43:44,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-03-16 13:43:44,848 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 13:43:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:45,038 INFO L93 Difference]: Finished difference Result 166 states and 208 transitions. [2025-03-16 13:43:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-16 13:43:45,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 41 [2025-03-16 13:43:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:45,039 INFO L225 Difference]: With dead ends: 166 [2025-03-16 13:43:45,039 INFO L226 Difference]: Without dead ends: 77 [2025-03-16 13:43:45,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-03-16 13:43:45,040 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:45,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:43:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-03-16 13:43:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2025-03-16 13:43:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 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 13:43:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2025-03-16 13:43:45,052 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 41 [2025-03-16 13:43:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:45,052 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2025-03-16 13:43:45,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 13:43:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2025-03-16 13:43:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-16 13:43:45,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:45,054 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:45,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-16 13:43:45,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:45,255 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:45,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:45,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2033694411, now seen corresponding path program 8 times [2025-03-16 13:43:45,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:45,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091017070] [2025-03-16 13:43:45,256 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:43:45,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:45,263 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-16 13:43:45,272 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-16 13:43:45,272 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:43:45,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-16 13:43:45,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091017070] [2025-03-16 13:43:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091017070] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984348338] [2025-03-16 13:43:45,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:43:45,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:45,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:45,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:43:45,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 13:43:45,405 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-16 13:43:45,429 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-16 13:43:45,429 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:43:45,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:45,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-16 13:43:45,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-16 13:43:45,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:43:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-16 13:43:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984348338] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:43:45,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:43:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-03-16 13:43:45,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244784096] [2025-03-16 13:43:45,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:43:45,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-16 13:43:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:43:45,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-16 13:43:45,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-03-16 13:43:45,553 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 13:43:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:43:45,726 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2025-03-16 13:43:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 13:43:45,727 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 42 [2025-03-16 13:43:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:43:45,727 INFO L225 Difference]: With dead ends: 77 [2025-03-16 13:43:45,727 INFO L226 Difference]: Without dead ends: 50 [2025-03-16 13:43:45,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-03-16 13:43:45,728 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:43:45,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 14 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:43:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-03-16 13:43:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-03-16 13:43:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 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 13:43:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2025-03-16 13:43:45,733 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 42 [2025-03-16 13:43:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:43:45,734 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2025-03-16 13:43:45,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 13:43:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2025-03-16 13:43:45,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-16 13:43:45,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:43:45,734 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:43:45,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-16 13:43:45,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 13:43:45,935 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:43:45,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:43:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1767021678, now seen corresponding path program 9 times [2025-03-16 13:43:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:43:45,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488957145] [2025-03-16 13:43:45,936 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:43:45,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:43:45,942 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 3 equivalence classes. [2025-03-16 13:43:45,966 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 49 of 49 statements. [2025-03-16 13:43:45,967 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-16 13:43:45,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 84 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 13:43:49,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:43:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488957145] [2025-03-16 13:43:49,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488957145] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:43:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127358590] [2025-03-16 13:43:49,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:43:49,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:43:49,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:43:49,169 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:43:49,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 13:43:49,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 3 equivalence classes. [2025-03-16 13:43:49,238 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 49 of 49 statements. [2025-03-16 13:43:49,238 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-16 13:43:49,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:43:49,248 WARN L254 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 164 conjuncts are in the unsatisfiable core [2025-03-16 13:43:49,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:43:49,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-16 13:43:49,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-03-16 13:43:49,455 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2025-03-16 13:43:49,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2025-03-16 13:43:52,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:43:52,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 39 [2025-03-16 13:43:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 1 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:43:53,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:44:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 13:44:04,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127358590] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:44:04,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:44:04,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 48, 44] total 130 [2025-03-16 13:44:04,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491921072] [2025-03-16 13:44:04,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:44:04,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2025-03-16 13:44:04,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:44:04,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2025-03-16 13:44:04,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=864, Invalid=15898, Unknown=8, NotChecked=0, Total=16770 [2025-03-16 13:44:04,593 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 130 states, 130 states have (on average 1.0615384615384615) internal successors, (138), 130 states have internal predecessors, (138), 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 13:44:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:44:17,571 INFO L93 Difference]: Finished difference Result 117 states and 143 transitions. [2025-03-16 13:44:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-03-16 13:44:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.0615384615384615) internal successors, (138), 130 states have internal predecessors, (138), 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 49 [2025-03-16 13:44:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:44:17,572 INFO L225 Difference]: With dead ends: 117 [2025-03-16 13:44:17,572 INFO L226 Difference]: Without dead ends: 102 [2025-03-16 13:44:17,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6022 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=1836, Invalid=31827, Unknown=9, NotChecked=0, Total=33672 [2025-03-16 13:44:17,576 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4461 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 4750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 4461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 13:44:17,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 4750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 4461 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 13:44:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-03-16 13:44:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2025-03-16 13:44:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 83 states have internal predecessors, (99), 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 13:44:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2025-03-16 13:44:17,595 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 49 [2025-03-16 13:44:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:44:17,595 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2025-03-16 13:44:17,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.0615384615384615) internal successors, (138), 130 states have internal predecessors, (138), 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 13:44:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2025-03-16 13:44:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-16 13:44:17,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:44:17,597 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:44:17,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-16 13:44:17,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:44:17,797 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:44:17,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:44:17,798 INFO L85 PathProgramCache]: Analyzing trace with hash 532946229, now seen corresponding path program 10 times [2025-03-16 13:44:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:44:17,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064164597] [2025-03-16 13:44:17,798 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:44:17,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:44:17,803 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-03-16 13:44:17,808 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 48 of 50 statements. [2025-03-16 13:44:17,808 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-16 13:44:17,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-16 13:44:17,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:44:17,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064164597] [2025-03-16 13:44:17,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064164597] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:44:17,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835023896] [2025-03-16 13:44:17,908 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:44:17,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:44:17,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:44:17,910 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:44:17,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 13:44:17,951 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-03-16 13:44:17,972 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 48 of 50 statements. [2025-03-16 13:44:17,973 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-16 13:44:17,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:17,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 13:44:17,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:44:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-16 13:44:18,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:44:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-16 13:44:18,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835023896] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:44:18,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:44:18,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2025-03-16 13:44:18,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789331946] [2025-03-16 13:44:18,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:44:18,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-16 13:44:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:44:18,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-16 13:44:18,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-03-16 13:44:18,141 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 13:44:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:44:18,366 INFO L93 Difference]: Finished difference Result 173 states and 209 transitions. [2025-03-16 13:44:18,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-16 13:44:18,366 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 50 [2025-03-16 13:44:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:44:18,367 INFO L225 Difference]: With dead ends: 173 [2025-03-16 13:44:18,367 INFO L226 Difference]: Without dead ends: 92 [2025-03-16 13:44:18,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-16 13:44:18,367 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:44:18,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:44:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-03-16 13:44:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2025-03-16 13:44:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 87 states have internal predecessors, (102), 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 13:44:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2025-03-16 13:44:18,389 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 50 [2025-03-16 13:44:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:44:18,389 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2025-03-16 13:44:18,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 13:44:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2025-03-16 13:44:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-16 13:44:18,390 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:44:18,390 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:44:18,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-16 13:44:18,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 13:44:18,590 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:44:18,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:44:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1224007982, now seen corresponding path program 11 times [2025-03-16 13:44:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:44:18,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930794511] [2025-03-16 13:44:18,591 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 13:44:18,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:44:18,595 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 4 equivalence classes. [2025-03-16 13:44:18,615 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 51 of 51 statements. [2025-03-16 13:44:18,615 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-16 13:44:18,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-16 13:44:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:44:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930794511] [2025-03-16 13:44:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930794511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:44:18,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657358553] [2025-03-16 13:44:18,734 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 13:44:18,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:44:18,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:44:18,735 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:44:18,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 13:44:18,780 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 51 statements into 4 equivalence classes. [2025-03-16 13:44:18,970 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 51 of 51 statements. [2025-03-16 13:44:18,970 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-16 13:44:18,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:18,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 13:44:18,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:44:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-16 13:44:19,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:44:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-16 13:44:19,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657358553] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:44:19,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:44:19,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2025-03-16 13:44:19,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149986370] [2025-03-16 13:44:19,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:44:19,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-16 13:44:19,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:44:19,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-16 13:44:19,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-03-16 13:44:19,158 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 13:44:19,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:44:19,379 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2025-03-16 13:44:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 13:44:19,379 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 51 [2025-03-16 13:44:19,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:44:19,380 INFO L225 Difference]: With dead ends: 92 [2025-03-16 13:44:19,380 INFO L226 Difference]: Without dead ends: 59 [2025-03-16 13:44:19,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2025-03-16 13:44:19,381 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:44:19,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:44:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-03-16 13:44:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2025-03-16 13:44:19,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 58 states have internal predecessors, (67), 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 13:44:19,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2025-03-16 13:44:19,394 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 51 [2025-03-16 13:44:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:44:19,394 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2025-03-16 13:44:19,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 13:44:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2025-03-16 13:44:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-16 13:44:19,395 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:44:19,395 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:44:19,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-16 13:44:19,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 13:44:19,595 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:44:19,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:44:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1900595797, now seen corresponding path program 12 times [2025-03-16 13:44:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:44:19,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833040514] [2025-03-16 13:44:19,596 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 13:44:19,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:44:19,603 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 4 equivalence classes. [2025-03-16 13:44:19,650 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 58 of 58 statements. [2025-03-16 13:44:19,650 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-16 13:44:19,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 13:44:24,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:44:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833040514] [2025-03-16 13:44:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833040514] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:44:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147481699] [2025-03-16 13:44:24,597 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-16 13:44:24,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:44:24,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:44:24,599 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:44:24,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 13:44:24,637 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 4 equivalence classes. [2025-03-16 13:44:24,669 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 58 of 58 statements. [2025-03-16 13:44:24,670 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-16 13:44:24,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:24,672 WARN L254 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 187 conjuncts are in the unsatisfiable core [2025-03-16 13:44:24,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:44:24,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-16 13:44:28,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-16 13:44:28,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2025-03-16 13:44:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 3 proven. 129 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 13:44:28,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:44:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 13:44:32,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147481699] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:44:32,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:44:32,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 53] total 157 [2025-03-16 13:44:32,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676164234] [2025-03-16 13:44:32,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:44:32,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2025-03-16 13:44:32,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:44:32,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2025-03-16 13:44:32,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1365, Invalid=23127, Unknown=0, NotChecked=0, Total=24492 [2025-03-16 13:44:32,926 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 157 states, 157 states have (on average 1.0382165605095541) internal successors, (163), 157 states have internal predecessors, (163), 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 13:44:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:44:51,236 INFO L93 Difference]: Finished difference Result 194 states and 246 transitions. [2025-03-16 13:44:51,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2025-03-16 13:44:51,236 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 157 states have (on average 1.0382165605095541) internal successors, (163), 157 states have internal predecessors, (163), 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 58 [2025-03-16 13:44:51,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:44:51,237 INFO L225 Difference]: With dead ends: 194 [2025-03-16 13:44:51,237 INFO L226 Difference]: Without dead ends: 191 [2025-03-16 13:44:51,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17534 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=4341, Invalid=53981, Unknown=0, NotChecked=0, Total=58322 [2025-03-16 13:44:51,240 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 9830 mSolverCounterSat, 1314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 11144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1314 IncrementalHoareTripleChecker+Valid, 9830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2025-03-16 13:44:51,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 11144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1314 Valid, 9830 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2025-03-16 13:44:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-03-16 13:44:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 161. [2025-03-16 13:44:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.29375) internal successors, (207), 160 states have internal predecessors, (207), 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 13:44:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 207 transitions. [2025-03-16 13:44:51,291 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 207 transitions. Word has length 58 [2025-03-16 13:44:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:44:51,291 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 207 transitions. [2025-03-16 13:44:51,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 157 states have (on average 1.0382165605095541) internal successors, (163), 157 states have internal predecessors, (163), 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 13:44:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 207 transitions. [2025-03-16 13:44:51,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 13:44:51,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:44:51,292 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:44:51,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-16 13:44:51,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-16 13:44:51,493 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:44:51,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:44:51,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1068171605, now seen corresponding path program 13 times [2025-03-16 13:44:51,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:44:51,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253790025] [2025-03-16 13:44:51,493 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 13:44:51,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:44:51,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 13:44:51,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 13:44:51,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:44:51,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2025-03-16 13:44:51,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:44:51,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253790025] [2025-03-16 13:44:51,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253790025] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:44:51,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165099605] [2025-03-16 13:44:51,649 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-16 13:44:51,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:44:51,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:44:51,651 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:44:51,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 13:44:51,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 13:44:51,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 13:44:51,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:44:51,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:51,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-16 13:44:51,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:44:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2025-03-16 13:44:51,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:44:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2025-03-16 13:44:51,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165099605] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:44:51,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:44:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-03-16 13:44:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438046205] [2025-03-16 13:44:51,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:44:51,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-16 13:44:51,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:44:51,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-16 13:44:51,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-03-16 13:44:51,911 INFO L87 Difference]: Start difference. First operand 161 states and 207 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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 13:44:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:44:52,251 INFO L93 Difference]: Finished difference Result 332 states and 420 transitions. [2025-03-16 13:44:52,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 13:44:52,252 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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 60 [2025-03-16 13:44:52,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:44:52,253 INFO L225 Difference]: With dead ends: 332 [2025-03-16 13:44:52,253 INFO L226 Difference]: Without dead ends: 143 [2025-03-16 13:44:52,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 101 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2025-03-16 13:44:52,253 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:44:52,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:44:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-03-16 13:44:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2025-03-16 13:44:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.1956521739130435) internal successors, (165), 138 states have internal predecessors, (165), 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 13:44:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 165 transitions. [2025-03-16 13:44:52,298 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 165 transitions. Word has length 60 [2025-03-16 13:44:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:44:52,298 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 165 transitions. [2025-03-16 13:44:52,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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 13:44:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 165 transitions. [2025-03-16 13:44:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 13:44:52,298 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:44:52,299 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:44:52,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-16 13:44:52,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 13:44:52,499 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:44:52,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:44:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1467380210, now seen corresponding path program 14 times [2025-03-16 13:44:52,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:44:52,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064887356] [2025-03-16 13:44:52,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:44:52,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:44:52,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-03-16 13:44:52,512 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 13:44:52,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:44:52,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-03-16 13:44:52,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:44:52,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064887356] [2025-03-16 13:44:52,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064887356] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:44:52,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301317793] [2025-03-16 13:44:52,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:44:52,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:44:52,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:44:52,644 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:44:52,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 13:44:52,687 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-03-16 13:44:52,711 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 13:44:52,711 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:44:52,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:44:52,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-16 13:44:52,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:44:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-03-16 13:44:52,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:44:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-03-16 13:44:52,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301317793] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:44:52,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:44:52,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-03-16 13:44:52,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77589026] [2025-03-16 13:44:52,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:44:52,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-16 13:44:52,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:44:52,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-16 13:44:52,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-03-16 13:44:52,875 INFO L87 Difference]: Start difference. First operand 139 states and 165 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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 13:44:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:44:53,121 INFO L93 Difference]: Finished difference Result 143 states and 169 transitions. [2025-03-16 13:44:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-16 13:44:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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 61 [2025-03-16 13:44:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:44:53,123 INFO L225 Difference]: With dead ends: 143 [2025-03-16 13:44:53,123 INFO L226 Difference]: Without dead ends: 104 [2025-03-16 13:44:53,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 102 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2025-03-16 13:44:53,123 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:44:53,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 13:44:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-16 13:44:53,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 68. [2025-03-16 13:44:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1343283582089552) internal successors, (76), 67 states have internal predecessors, (76), 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 13:44:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2025-03-16 13:44:53,151 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 61 [2025-03-16 13:44:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:44:53,151 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2025-03-16 13:44:53,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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 13:44:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2025-03-16 13:44:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 13:44:53,151 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:44:53,152 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:44:53,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-16 13:44:53,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:44:53,352 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:44:53,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:44:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash 721662030, now seen corresponding path program 15 times [2025-03-16 13:44:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:44:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154288348] [2025-03-16 13:44:53,353 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:44:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:44:53,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 67 statements into 4 equivalence classes. [2025-03-16 13:44:53,412 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 13:44:53,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-16 13:44:53,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat