./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/phases_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-acceleration/phases_1-2.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 4f868671c12bae02e06798527bc7c1ed7b8332d3fee83b3ff24f9cd503da0a60 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 13:30:50,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 13:30:50,318 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 13:30:50,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 13:30:50,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 13:30:50,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 13:30:50,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 13:30:50,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 13:30:50,339 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 13:30:50,339 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 13:30:50,339 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 13:30:50,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 13:30:50,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 13:30:50,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 13:30:50,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 13:30:50,341 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:30:50,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 13:30:50,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 13:30:50,341 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 -> 4f868671c12bae02e06798527bc7c1ed7b8332d3fee83b3ff24f9cd503da0a60 [2025-03-03 13:30:50,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 13:30:50,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 13:30:50,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 13:30:50,532 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 13:30:50,533 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 13:30:50,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/phases_1-2.c [2025-03-03 13:30:51,581 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b62196e/dba478b2bd764a3994583699a3f21a39/FLAG61ab092c5 [2025-03-03 13:30:51,785 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 13:30:51,790 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_1-2.c [2025-03-03 13:30:51,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b62196e/dba478b2bd764a3994583699a3f21a39/FLAG61ab092c5 [2025-03-03 13:30:52,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b62196e/dba478b2bd764a3994583699a3f21a39 [2025-03-03 13:30:52,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 13:30:52,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 13:30:52,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 13:30:52,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 13:30:52,159 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 13:30:52,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154be36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52, skipping insertion in model container [2025-03-03 13:30:52,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 13:30:52,273 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/loop-acceleration/phases_1-2.c[322,335] [2025-03-03 13:30:52,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:30:52,290 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 13:30:52,296 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/loop-acceleration/phases_1-2.c[322,335] [2025-03-03 13:30:52,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:30:52,309 INFO L204 MainTranslator]: Completed translation [2025-03-03 13:30:52,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52 WrapperNode [2025-03-03 13:30:52,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 13:30:52,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 13:30:52,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 13:30:52,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 13:30:52,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,329 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2025-03-03 13:30:52,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 13:30:52,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 13:30:52,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 13:30:52,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 13:30:52,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,342 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 13:30:52,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,344 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 13:30:52,350 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 13:30:52,350 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 13:30:52,350 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 13:30:52,350 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (1/1) ... [2025-03-03 13:30:52,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:30:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:30:52,371 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) [2025-03-03 13:30:52,373 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 [2025-03-03 13:30:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 13:30:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 13:30:52,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 13:30:52,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 13:30:52,422 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 13:30:52,424 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 13:30:52,493 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-03-03 13:30:52,494 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 13:30:52,499 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 13:30:52,500 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 13:30:52,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:30:52 BoogieIcfgContainer [2025-03-03 13:30:52,503 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 13:30:52,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 13:30:52,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 13:30:52,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 13:30:52,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 01:30:52" (1/3) ... [2025-03-03 13:30:52,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b00898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:30:52, skipping insertion in model container [2025-03-03 13:30:52,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:30:52" (2/3) ... [2025-03-03 13:30:52,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b00898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:30:52, skipping insertion in model container [2025-03-03 13:30:52,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:30:52" (3/3) ... [2025-03-03 13:30:52,510 INFO L128 eAbstractionObserver]: Analyzing ICFG phases_1-2.c [2025-03-03 13:30:52,519 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 13:30:52,520 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG phases_1-2.c that has 1 procedures, 11 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 13:30:52,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 13:30:52,558 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;@7cd9c874, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 13:30:52,558 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 13:30:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2025-03-03 13:30:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-03 13:30:52,567 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:30:52,568 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-03 13:30:52,568 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:30:52,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:30:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash 40045990, now seen corresponding path program 1 times [2025-03-03 13:30:52,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:30:52,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37324577] [2025-03-03 13:30:52,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:30:52,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:30:52,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-03 13:30:52,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-03 13:30:52,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:30:52,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:52,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:30:52,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37324577] [2025-03-03 13:30:52,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37324577] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:30:52,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:30:52,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 13:30:52,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131326413] [2025-03-03 13:30:52,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:30:52,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 13:30:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:30:52,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 13:30:52,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 13:30:52,836 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-03 13:30:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:30:52,859 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2025-03-03 13:30:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 13:30:52,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2025-03-03 13:30:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:30:52,865 INFO L225 Difference]: With dead ends: 22 [2025-03-03 13:30:52,865 INFO L226 Difference]: Without dead ends: 9 [2025-03-03 13:30:52,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 13:30:52,868 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:30:52,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:30:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-03-03 13:30:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-03-03 13:30:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2025-03-03 13:30:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2025-03-03 13:30:52,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2025-03-03 13:30:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:30:52,886 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2025-03-03 13:30:52,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-03 13:30:52,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2025-03-03 13:30:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-03 13:30:52,886 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:30:52,886 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:30:52,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 13:30:52,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:30:52,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:30:52,887 INFO L85 PathProgramCache]: Analyzing trace with hash -167646296, now seen corresponding path program 1 times [2025-03-03 13:30:52,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:30:52,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472103182] [2025-03-03 13:30:52,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:30:52,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:30:52,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-03 13:30:52,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-03 13:30:52,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:30:52,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:52,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:30:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472103182] [2025-03-03 13:30:52,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472103182] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:30:52,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459039647] [2025-03-03 13:30:52,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:30:52,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:52,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:30:52,978 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) [2025-03-03 13:30:52,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 13:30:53,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-03 13:30:53,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-03 13:30:53,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:30:53,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:53,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 13:30:53,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:30:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:53,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:30:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459039647] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:30:53,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:30:53,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 13:30:53,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867193715] [2025-03-03 13:30:53,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:30:53,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 13:30:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:30:53,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 13:30:53,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-03 13:30:53,083 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2025-03-03 13:30:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:30:53,129 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2025-03-03 13:30:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 13:30:53,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 7 [2025-03-03 13:30:53,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:30:53,130 INFO L225 Difference]: With dead ends: 18 [2025-03-03 13:30:53,130 INFO L226 Difference]: Without dead ends: 13 [2025-03-03 13:30:53,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2025-03-03 13:30:53,131 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:30:53,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:30:53,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-03-03 13:30:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-03-03 13:30:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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) [2025-03-03 13:30:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2025-03-03 13:30:53,133 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2025-03-03 13:30:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:30:53,133 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2025-03-03 13:30:53,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2025-03-03 13:30:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2025-03-03 13:30:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-03 13:30:53,134 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:30:53,134 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2025-03-03 13:30:53,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 13:30:53,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:53,338 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:30:53,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:30:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1434594677, now seen corresponding path program 1 times [2025-03-03 13:30:53,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:30:53,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286234164] [2025-03-03 13:30:53,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:30:53,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:30:53,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-03 13:30:53,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 13:30:53,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:30:53,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:53,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:30:53,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286234164] [2025-03-03 13:30:53,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286234164] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:30:53,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281247085] [2025-03-03 13:30:53,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:30:53,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:53,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:30:53,465 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) [2025-03-03 13:30:53,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 13:30:53,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-03 13:30:53,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 13:30:53,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:30:53,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:53,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 13:30:53,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:30:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:53,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:30:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 13:30:53,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281247085] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:30:53,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:30:53,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 10 [2025-03-03 13:30:53,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126079882] [2025-03-03 13:30:53,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:30:53,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 13:30:53,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:30:53,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 13:30:53,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-03 13:30:53,585 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2025-03-03 13:30:53,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:30:53,633 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2025-03-03 13:30:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 13:30:53,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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) Word has length 11 [2025-03-03 13:30:53,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:30:53,633 INFO L225 Difference]: With dead ends: 24 [2025-03-03 13:30:53,633 INFO L226 Difference]: Without dead ends: 17 [2025-03-03 13:30:53,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-03 13:30:53,634 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:30:53,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:30:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-03-03 13:30:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2025-03-03 13:30:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:30:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2025-03-03 13:30:53,638 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2025-03-03 13:30:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:30:53,638 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2025-03-03 13:30:53,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2025-03-03 13:30:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2025-03-03 13:30:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-03 13:30:53,638 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:30:53,638 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2025-03-03 13:30:53,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 13:30:53,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-03 13:30:53,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:30:53,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:30:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash 13281037, now seen corresponding path program 2 times [2025-03-03 13:30:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:30:53,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733994633] [2025-03-03 13:30:53,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:30:53,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:30:53,848 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-03 13:30:53,857 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-03 13:30:53,858 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:30:53,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:53,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:30:53,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733994633] [2025-03-03 13:30:53,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733994633] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:30:53,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847549378] [2025-03-03 13:30:53,934 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:30:53,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:53,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:30:53,936 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) [2025-03-03 13:30:53,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 13:30:53,958 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-03 13:30:53,964 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-03 13:30:53,964 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:30:53,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:53,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:30:53,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:30:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:53,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:30:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:30:54,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847549378] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:30:54,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:30:54,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2025-03-03 13:30:54,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875594988] [2025-03-03 13:30:54,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:30:54,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 13:30:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:30:54,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 13:30:54,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2025-03-03 13:30:54,097 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2025-03-03 13:30:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:30:54,222 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2025-03-03 13:30:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-03 13:30:54,222 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 [2025-03-03 13:30:54,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:30:54,222 INFO L225 Difference]: With dead ends: 36 [2025-03-03 13:30:54,222 INFO L226 Difference]: Without dead ends: 28 [2025-03-03 13:30:54,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=123, Unknown=0, NotChecked=0, Total=210 [2025-03-03 13:30:54,223 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:30:54,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:30:54,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-03 13:30:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-03-03 13:30:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 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) [2025-03-03 13:30:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2025-03-03 13:30:54,227 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2025-03-03 13:30:54,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:30:54,228 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2025-03-03 13:30:54,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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) [2025-03-03 13:30:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2025-03-03 13:30:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-03 13:30:54,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:30:54,228 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1] [2025-03-03 13:30:54,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 13:30:54,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:54,429 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:30:54,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:30:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash -99680359, now seen corresponding path program 3 times [2025-03-03 13:30:54,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:30:54,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159523986] [2025-03-03 13:30:54,430 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:30:54,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:30:54,433 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 11 equivalence classes. [2025-03-03 13:30:54,441 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 11 of 25 statements. [2025-03-03 13:30:54,441 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-03 13:30:54,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-03 13:30:54,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:30:54,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159523986] [2025-03-03 13:30:54,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159523986] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:30:54,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518132631] [2025-03-03 13:30:54,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:30:54,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:30:54,498 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) [2025-03-03 13:30:54,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 13:30:54,532 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 11 equivalence classes. [2025-03-03 13:30:54,540 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 11 of 25 statements. [2025-03-03 13:30:54,540 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-03 13:30:54,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:54,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 13:30:54,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:30:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-03 13:30:54,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:30:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-03 13:30:54,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518132631] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:30:54,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:30:54,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 13:30:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100328078] [2025-03-03 13:30:54,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:30:54,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 13:30:54,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:30:54,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 13:30:54,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-03 13:30:54,587 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2025-03-03 13:30:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:30:54,636 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2025-03-03 13:30:54,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 13:30:54,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 25 [2025-03-03 13:30:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:30:54,637 INFO L225 Difference]: With dead ends: 48 [2025-03-03 13:30:54,637 INFO L226 Difference]: Without dead ends: 45 [2025-03-03 13:30:54,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2025-03-03 13:30:54,638 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:30:54,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 11 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:30:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-03 13:30:54,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2025-03-03 13:30:54,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 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) [2025-03-03 13:30:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2025-03-03 13:30:54,646 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 25 [2025-03-03 13:30:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:30:54,646 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2025-03-03 13:30:54,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2025-03-03 13:30:54,647 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2025-03-03 13:30:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-03 13:30:54,648 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:30:54,648 INFO L218 NwaCegarLoop]: trace histogram [13, 9, 4, 1, 1, 1, 1, 1] [2025-03-03 13:30:54,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 13:30:54,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:54,849 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:30:54,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:30:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1406224316, now seen corresponding path program 4 times [2025-03-03 13:30:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:30:54,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488569898] [2025-03-03 13:30:54,849 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:30:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:30:54,854 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-03 13:30:54,863 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-03 13:30:54,863 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:30:54,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 70 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 13:30:55,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:30:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488569898] [2025-03-03 13:30:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488569898] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:30:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829029278] [2025-03-03 13:30:55,042 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:30:55,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:30:55,045 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) [2025-03-03 13:30:55,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 13:30:55,066 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-03 13:30:55,077 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-03 13:30:55,077 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:30:55,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:55,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 13:30:55,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:30:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 55 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 13:30:55,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:30:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 55 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 13:30:55,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829029278] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:30:55,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:30:55,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 26 [2025-03-03 13:30:55,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737908682] [2025-03-03 13:30:55,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:30:55,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-03 13:30:55,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:30:55,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-03 13:30:55,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2025-03-03 13:30:55,520 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 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) [2025-03-03 13:30:58,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:30:58,506 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2025-03-03 13:30:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-03 13:30:58,507 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 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 [2025-03-03 13:30:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:30:58,508 INFO L225 Difference]: With dead ends: 72 [2025-03-03 13:30:58,508 INFO L226 Difference]: Without dead ends: 58 [2025-03-03 13:30:58,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=464, Invalid=796, Unknown=0, NotChecked=0, Total=1260 [2025-03-03 13:30:58,509 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:30:58,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:30:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-03 13:30:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-03-03 13:30:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:30:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2025-03-03 13:30:58,520 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 31 [2025-03-03 13:30:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:30:58,520 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2025-03-03 13:30:58,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 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) [2025-03-03 13:30:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2025-03-03 13:30:58,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-03 13:30:58,520 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:30:58,520 INFO L218 NwaCegarLoop]: trace histogram [25, 21, 4, 1, 1, 1, 1, 1] [2025-03-03 13:30:58,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 13:30:58,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:58,721 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:30:58,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:30:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash -314249004, now seen corresponding path program 5 times [2025-03-03 13:30:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:30:58,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117540381] [2025-03-03 13:30:58,721 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:30:58,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:30:58,726 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 26 equivalence classes. [2025-03-03 13:30:58,783 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) and asserted 55 of 55 statements. [2025-03-03 13:30:58,784 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2025-03-03 13:30:58,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 154 proven. 462 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 13:30:59,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:30:59,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117540381] [2025-03-03 13:30:59,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117540381] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:30:59,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793474572] [2025-03-03 13:30:59,224 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:30:59,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:30:59,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:30:59,226 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) [2025-03-03 13:30:59,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 13:30:59,248 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 26 equivalence classes. [2025-03-03 13:30:59,336 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) and asserted 55 of 55 statements. [2025-03-03 13:30:59,336 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2025-03-03 13:30:59,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:30:59,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-03 13:30:59,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:30:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 154 proven. 462 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 13:30:59,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:31:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 154 proven. 462 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 13:31:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793474572] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:31:00,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:31:00,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 25] total 48 [2025-03-03 13:31:00,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539844181] [2025-03-03 13:31:00,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:31:00,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-03 13:31:00,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:31:00,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-03 13:31:00,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2025-03-03 13:31:00,265 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 48 states, 48 states have (on average 2.0625) internal successors, (99), 48 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) [2025-03-03 13:32:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:32:01,292 INFO L93 Difference]: Finished difference Result 118 states and 151 transitions. [2025-03-03 13:32:01,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-03 13:32:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0625) internal successors, (99), 48 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) Word has length 55 [2025-03-03 13:32:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:32:01,293 INFO L225 Difference]: With dead ends: 118 [2025-03-03 13:32:01,293 INFO L226 Difference]: Without dead ends: 104 [2025-03-03 13:32:01,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 61.5s TimeCoverageRelationStatistics Valid=1653, Invalid=3039, Unknown=0, NotChecked=0, Total=4692 [2025-03-03 13:32:01,295 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 13:32:01,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 13:32:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-03 13:32:01,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-03-03 13:32:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.058252427184466) internal successors, (109), 103 states have internal predecessors, (109), 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) [2025-03-03 13:32:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2025-03-03 13:32:01,312 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 55 [2025-03-03 13:32:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:32:01,312 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2025-03-03 13:32:01,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0625) internal successors, (99), 48 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) [2025-03-03 13:32:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2025-03-03 13:32:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-03 13:32:01,314 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:01,314 INFO L218 NwaCegarLoop]: trace histogram [49, 45, 4, 1, 1, 1, 1, 1] [2025-03-03 13:32:01,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 13:32:01,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:32:01,514 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:32:01,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:32:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -132584700, now seen corresponding path program 6 times [2025-03-03 13:32:01,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:32:01,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077650176] [2025-03-03 13:32:01,515 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:32:01,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:32:01,522 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 50 equivalence classes. [2025-03-03 13:32:01,555 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 41 of 103 statements. [2025-03-03 13:32:01,555 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-03-03 13:32:01,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 405 proven. 16 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2025-03-03 13:32:01,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:32:01,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077650176] [2025-03-03 13:32:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077650176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:32:01,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154133110] [2025-03-03 13:32:01,661 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:32:01,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:32:01,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:32:01,663 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) [2025-03-03 13:32:01,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 13:32:01,706 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 50 equivalence classes. [2025-03-03 13:32:01,742 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 41 of 103 statements. [2025-03-03 13:32:01,743 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-03-03 13:32:01,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:01,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 13:32:01,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:32:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 405 proven. 16 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2025-03-03 13:32:01,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:32:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 405 proven. 16 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2025-03-03 13:32:01,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154133110] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:32:01,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:32:01,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-03 13:32:01,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575264616] [2025-03-03 13:32:01,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:32:01,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 13:32:01,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:32:01,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 13:32:01,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:32:01,851 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) [2025-03-03 13:32:05,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:09,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:13,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:17,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:21,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:25,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:29,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:33,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:38,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:39,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-03 13:32:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:32:39,405 INFO L93 Difference]: Finished difference Result 174 states and 217 transitions. [2025-03-03 13:32:39,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-03 13:32:39,405 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) Word has length 103 [2025-03-03 13:32:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:32:39,406 INFO L225 Difference]: With dead ends: 174 [2025-03-03 13:32:39,406 INFO L226 Difference]: Without dead ends: 171 [2025-03-03 13:32:39,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=265, Invalid=385, Unknown=0, NotChecked=0, Total=650 [2025-03-03 13:32:39,407 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 16 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:32:39,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 20 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 143 Invalid, 9 Unknown, 0 Unchecked, 37.2s Time] [2025-03-03 13:32:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-03-03 13:32:39,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 116. [2025-03-03 13:32:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.1043478260869566) internal successors, (127), 115 states have internal predecessors, (127), 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) [2025-03-03 13:32:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2025-03-03 13:32:39,430 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 103 [2025-03-03 13:32:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:32:39,431 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2025-03-03 13:32:39,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) [2025-03-03 13:32:39,431 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2025-03-03 13:32:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-03 13:32:39,432 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:39,432 INFO L218 NwaCegarLoop]: trace histogram [55, 45, 10, 1, 1, 1, 1, 1] [2025-03-03 13:32:39,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-03 13:32:39,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:32:39,633 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:32:39,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:32:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash 8178826, now seen corresponding path program 7 times [2025-03-03 13:32:39,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:32:39,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59763786] [2025-03-03 13:32:39,633 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:32:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:32:39,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-03 13:32:39,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-03 13:32:39,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:32:39,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat