./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:47:55,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:47:55,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-03-17 14:47:55,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:47:55,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:47:55,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:47:55,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:47:55,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:47:55,383 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:47:55,383 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:47:55,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:47:55,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:47:55,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:47:55,383 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:47:55,383 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:47:55,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:47:55,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 14:47:55,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:47:55,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:47:55,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:47:55,384 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:47:55,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:47:55,384 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:47:55,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:47:55,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:47:55,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:47:55,385 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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe [2025-03-17 14:47:55,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:47:55,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:47:55,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:47:55,629 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:47:55,629 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:47:55,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2025-03-17 14:47:56,725 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba04f5eb6/0ce994b7a79a4862a2bce8d58a2e6385/FLAG4647196e9 [2025-03-17 14:47:57,003 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:47:57,004 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2025-03-17 14:47:57,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba04f5eb6/0ce994b7a79a4862a2bce8d58a2e6385/FLAG4647196e9 [2025-03-17 14:47:57,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba04f5eb6/0ce994b7a79a4862a2bce8d58a2e6385 [2025-03-17 14:47:57,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:47:57,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:47:57,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:47:57,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:47:57,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:47:57,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58691968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57, skipping insertion in model container [2025-03-17 14:47:57,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:47:57,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:47:57,423 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:47:57,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:47:57,439 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:47:57,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57 WrapperNode [2025-03-17 14:47:57,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:47:57,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:47:57,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:47:57,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:47:57,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,456 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2025-03-17 14:47:57,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:47:57,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:47:57,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:47:57,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:47:57,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,466 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-17 14:47:57,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,468 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:47:57,470 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:47:57,474 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:47:57,474 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:47:57,475 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (1/1) ... [2025-03-17 14:47:57,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:47:57,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:47:57,504 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) [2025-03-17 14:47:57,509 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 [2025-03-17 14:47:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-03-17 14:47:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-03-17 14:47:57,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:47:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:47:57,566 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:47:57,568 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:47:57,652 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L20: havoc #t~ret1; [2025-03-17 14:47:57,652 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: havoc #t~ret0; [2025-03-17 14:47:57,672 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-17 14:47:57,672 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:47:57,679 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:47:57,679 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:47:57,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:47:57 BoogieIcfgContainer [2025-03-17 14:47:57,679 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:47:57,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:47:57,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:47:57,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:47:57,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:47:57" (1/3) ... [2025-03-17 14:47:57,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9abc5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:47:57, skipping insertion in model container [2025-03-17 14:47:57,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:47:57" (2/3) ... [2025-03-17 14:47:57,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9abc5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:47:57, skipping insertion in model container [2025-03-17 14:47:57,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:47:57" (3/3) ... [2025-03-17 14:47:57,687 INFO L128 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2025-03-17 14:47:57,698 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:47:57,699 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG LeeJonesBen-Amram-POPL2001-Ex5.c that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-03-17 14:47:57,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:47:57,741 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;@232cb6ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:47:57,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 14:47:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 14:47:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 14:47:57,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:47:57,749 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:47:57,749 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:47:57,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:47:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1151748707, now seen corresponding path program 1 times [2025-03-17 14:47:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:47:57,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538169377] [2025-03-17 14:47:57,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:57,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:47:57,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 14:47:57,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 14:47:57,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:57,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:57,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:47:57,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538169377] [2025-03-17 14:47:57,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538169377] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:47:57,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:47:57,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:47:57,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387821294] [2025-03-17 14:47:57,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:47:57,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:47:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:47:57,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:47:57,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:47:57,913 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:47:57,983 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2025-03-17 14:47:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:47:57,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 14:47:57,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:47:57,989 INFO L225 Difference]: With dead ends: 44 [2025-03-17 14:47:57,989 INFO L226 Difference]: Without dead ends: 28 [2025-03-17 14:47:57,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:47:57,993 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:47:57,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 78 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:47:58,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-17 14:47:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2025-03-17 14:47:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-03-17 14:47:58,017 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2025-03-17 14:47:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:47:58,018 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-03-17 14:47:58,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-03-17 14:47:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 14:47:58,019 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:47:58,019 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:47:58,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:47:58,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:47:58,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:47:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1151748745, now seen corresponding path program 1 times [2025-03-17 14:47:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:47:58,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61462681] [2025-03-17 14:47:58,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:47:58,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 14:47:58,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 14:47:58,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:58,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:58,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:47:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61462681] [2025-03-17 14:47:58,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61462681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:47:58,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:47:58,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:47:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746547000] [2025-03-17 14:47:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:47:58,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:47:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:47:58,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:47:58,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:47:58,073 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:47:58,104 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2025-03-17 14:47:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:47:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 14:47:58,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:47:58,104 INFO L225 Difference]: With dead ends: 28 [2025-03-17 14:47:58,104 INFO L226 Difference]: Without dead ends: 27 [2025-03-17 14:47:58,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:47:58,105 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:47:58,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 42 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:47:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-17 14:47:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2025-03-17 14:47:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2025-03-17 14:47:58,108 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2025-03-17 14:47:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:47:58,108 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2025-03-17 14:47:58,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2025-03-17 14:47:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 14:47:58,109 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:47:58,109 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:47:58,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:47:58,110 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:47:58,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:47:58,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1344471568, now seen corresponding path program 1 times [2025-03-17 14:47:58,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:47:58,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725554988] [2025-03-17 14:47:58,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:58,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:47:58,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:47:58,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:47:58,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:58,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:58,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:47:58,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725554988] [2025-03-17 14:47:58,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725554988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:47:58,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:47:58,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:47:58,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686081091] [2025-03-17 14:47:58,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:47:58,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:47:58,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:47:58,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:47:58,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:47:58,158 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:47:58,186 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2025-03-17 14:47:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:47:58,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-17 14:47:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:47:58,187 INFO L225 Difference]: With dead ends: 27 [2025-03-17 14:47:58,187 INFO L226 Difference]: Without dead ends: 26 [2025-03-17 14:47:58,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:47:58,188 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:47:58,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 38 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:47:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-03-17 14:47:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2025-03-17 14:47:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2025-03-17 14:47:58,191 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2025-03-17 14:47:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:47:58,191 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2025-03-17 14:47:58,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2025-03-17 14:47:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 14:47:58,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:47:58,192 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:47:58,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:47:58,192 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:47:58,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:47:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1344472753, now seen corresponding path program 1 times [2025-03-17 14:47:58,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:47:58,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768471799] [2025-03-17 14:47:58,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:47:58,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 14:47:58,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 14:47:58,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:58,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:58,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:47:58,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768471799] [2025-03-17 14:47:58,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768471799] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:47:58,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:47:58,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:47:58,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264470512] [2025-03-17 14:47:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:47:58,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:47:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:47:58,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:47:58,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:47:58,235 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:47:58,276 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2025-03-17 14:47:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:47:58,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-17 14:47:58,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:47:58,277 INFO L225 Difference]: With dead ends: 35 [2025-03-17 14:47:58,277 INFO L226 Difference]: Without dead ends: 34 [2025-03-17 14:47:58,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:47:58,278 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:47:58,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 45 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:47:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-03-17 14:47:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2025-03-17 14:47:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-03-17 14:47:58,281 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2025-03-17 14:47:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:47:58,282 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-03-17 14:47:58,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-03-17 14:47:58,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-17 14:47:58,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:47:58,282 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:47:58,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:47:58,282 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:47:58,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:47:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash 758151563, now seen corresponding path program 1 times [2025-03-17 14:47:58,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:47:58,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976694388] [2025-03-17 14:47:58,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:58,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:47:58,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:47:58,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:47:58,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:58,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:47:58,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976694388] [2025-03-17 14:47:58,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976694388] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:47:58,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686710107] [2025-03-17 14:47:58,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:58,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:47:58,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:47:58,349 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) [2025-03-17 14:47:58,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 14:47:58,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:47:58,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:47:58,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:58,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:58,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:47:58,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:47:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:58,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:47:58,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:58,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686710107] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:47:58,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:47:58,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-03-17 14:47:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490466306] [2025-03-17 14:47:58,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:47:58,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 14:47:58,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:47:58,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 14:47:58,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 14:47:58,512 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:47:58,800 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2025-03-17 14:47:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-17 14:47:58,801 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-17 14:47:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:47:58,801 INFO L225 Difference]: With dead ends: 90 [2025-03-17 14:47:58,801 INFO L226 Difference]: Without dead ends: 88 [2025-03-17 14:47:58,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2025-03-17 14:47:58,802 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 83 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:47:58,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 66 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:47:58,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-03-17 14:47:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2025-03-17 14:47:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 50 states have internal predecessors, (63), 9 states have call successors, (9), 8 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2025-03-17 14:47:58,810 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 13 [2025-03-17 14:47:58,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:47:58,810 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2025-03-17 14:47:58,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:58,810 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2025-03-17 14:47:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-17 14:47:58,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:47:58,810 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:47:58,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 14:47:59,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:47:59,015 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:47:59,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:47:59,016 INFO L85 PathProgramCache]: Analyzing trace with hash 758151525, now seen corresponding path program 1 times [2025-03-17 14:47:59,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:47:59,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597091910] [2025-03-17 14:47:59,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:59,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:47:59,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:47:59,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:47:59,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:59,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:59,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:47:59,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597091910] [2025-03-17 14:47:59,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597091910] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:47:59,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790166629] [2025-03-17 14:47:59,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:59,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:47:59,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:47:59,091 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) [2025-03-17 14:47:59,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 14:47:59,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:47:59,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:47:59,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:59,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:59,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:47:59,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:47:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:59,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:47:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:59,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790166629] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:47:59,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:47:59,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-03-17 14:47:59,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661851818] [2025-03-17 14:47:59,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:47:59,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 14:47:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:47:59,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 14:47:59,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 14:47:59,194 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:47:59,407 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2025-03-17 14:47:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 14:47:59,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-17 14:47:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:47:59,408 INFO L225 Difference]: With dead ends: 100 [2025-03-17 14:47:59,408 INFO L226 Difference]: Without dead ends: 98 [2025-03-17 14:47:59,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-03-17 14:47:59,409 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:47:59,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 74 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:47:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-03-17 14:47:59,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 76. [2025-03-17 14:47:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 60 states have (on average 1.3666666666666667) internal successors, (82), 64 states have internal predecessors, (82), 12 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:59,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 94 transitions. [2025-03-17 14:47:59,418 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 94 transitions. Word has length 13 [2025-03-17 14:47:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:47:59,419 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 94 transitions. [2025-03-17 14:47:59,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:59,420 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 94 transitions. [2025-03-17 14:47:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-17 14:47:59,420 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:47:59,420 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 14:47:59,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 14:47:59,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 14:47:59,621 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:47:59,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:47:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2027861954, now seen corresponding path program 1 times [2025-03-17 14:47:59,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:47:59,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347561168] [2025-03-17 14:47:59,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:47:59,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 14:47:59,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 14:47:59,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:59,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:59,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:47:59,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347561168] [2025-03-17 14:47:59,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347561168] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:47:59,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607435751] [2025-03-17 14:47:59,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:47:59,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:47:59,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:47:59,672 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) [2025-03-17 14:47:59,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 14:47:59,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 14:47:59,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 14:47:59,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:47:59,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:47:59,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:47:59,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:47:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:59,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:47:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:47:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607435751] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:47:59,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:47:59,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-17 14:47:59,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391016826] [2025-03-17 14:47:59,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:47:59,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 14:47:59,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:47:59,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 14:47:59,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 14:47:59,761 INFO L87 Difference]: Start difference. First operand 76 states and 94 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:47:59,860 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2025-03-17 14:47:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:47:59,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-17 14:47:59,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:47:59,862 INFO L225 Difference]: With dead ends: 76 [2025-03-17 14:47:59,862 INFO L226 Difference]: Without dead ends: 74 [2025-03-17 14:47:59,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2025-03-17 14:47:59,863 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:47:59,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 37 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:47:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-17 14:47:59,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2025-03-17 14:47:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 56 states have internal predecessors, (66), 11 states have call successors, (11), 10 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2025-03-17 14:47:59,870 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 14 [2025-03-17 14:47:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:47:59,870 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2025-03-17 14:47:59,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:47:59,871 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2025-03-17 14:47:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-17 14:47:59,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:47:59,871 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2025-03-17 14:47:59,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:00,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:00,074 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:00,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1180780945, now seen corresponding path program 1 times [2025-03-17 14:48:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:00,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39010878] [2025-03-17 14:48:00,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:48:00,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:00,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:48:00,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:48:00,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:48:00,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:00,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:00,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39010878] [2025-03-17 14:48:00,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39010878] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:00,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475425925] [2025-03-17 14:48:00,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:48:00,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:00,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:00,164 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) [2025-03-17 14:48:00,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 14:48:00,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:48:00,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:48:00,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:48:00,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:00,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:48:00,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:00,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:00,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475425925] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:00,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:00,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2025-03-17 14:48:00,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94555906] [2025-03-17 14:48:00,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:00,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-17 14:48:00,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:00,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-17 14:48:00,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2025-03-17 14:48:00,373 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 13 states have internal predecessors, (46), 8 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:01,262 INFO L93 Difference]: Finished difference Result 240 states and 279 transitions. [2025-03-17 14:48:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-03-17 14:48:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 13 states have internal predecessors, (46), 8 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-03-17 14:48:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:01,263 INFO L225 Difference]: With dead ends: 240 [2025-03-17 14:48:01,263 INFO L226 Difference]: Without dead ends: 225 [2025-03-17 14:48:01,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=783, Invalid=3773, Unknown=0, NotChecked=0, Total=4556 [2025-03-17 14:48:01,268 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 325 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:01,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 118 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 14:48:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-03-17 14:48:01,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 119. [2025-03-17 14:48:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 99 states have internal predecessors, (118), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2025-03-17 14:48:01,290 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 19 [2025-03-17 14:48:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:01,291 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2025-03-17 14:48:01,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 13 states have internal predecessors, (46), 8 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2025-03-17 14:48:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-17 14:48:01,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:01,292 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:48:01,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:01,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:01,493 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:01,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:01,493 INFO L85 PathProgramCache]: Analyzing trace with hash -99386688, now seen corresponding path program 1 times [2025-03-17 14:48:01,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:01,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899406964] [2025-03-17 14:48:01,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:48:01,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:01,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 14:48:01,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:48:01,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:48:01,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-17 14:48:01,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:01,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899406964] [2025-03-17 14:48:01,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899406964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:48:01,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:48:01,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:48:01,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856265988] [2025-03-17 14:48:01,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:48:01,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:48:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:01,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:48:01,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:48:01,534 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:01,579 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2025-03-17 14:48:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:48:01,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-03-17 14:48:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:01,580 INFO L225 Difference]: With dead ends: 123 [2025-03-17 14:48:01,580 INFO L226 Difference]: Without dead ends: 122 [2025-03-17 14:48:01,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:48:01,581 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:01,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 43 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:48:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-03-17 14:48:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2025-03-17 14:48:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 98 states have internal predecessors, (116), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2025-03-17 14:48:01,598 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 25 [2025-03-17 14:48:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:01,598 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2025-03-17 14:48:01,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2025-03-17 14:48:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-17 14:48:01,601 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:01,601 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:48:01,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 14:48:01,601 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:01,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash 423002022, now seen corresponding path program 1 times [2025-03-17 14:48:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:01,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286234164] [2025-03-17 14:48:01,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:48:01,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:01,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 14:48:01,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:48:01,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:48:01,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:01,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286234164] [2025-03-17 14:48:01,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286234164] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:01,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041125801] [2025-03-17 14:48:01,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:48:01,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:01,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:01,701 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) [2025-03-17 14:48:01,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 14:48:01,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 14:48:01,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:48:01,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:48:01,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:01,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 14:48:01,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:01,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041125801] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:01,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-03-17 14:48:01,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281247085] [2025-03-17 14:48:01,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:01,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 14:48:01,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:01,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 14:48:01,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2025-03-17 14:48:01,860 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:02,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:02,237 INFO L93 Difference]: Finished difference Result 188 states and 212 transitions. [2025-03-17 14:48:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 14:48:02,238 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-03-17 14:48:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:02,239 INFO L225 Difference]: With dead ends: 188 [2025-03-17 14:48:02,239 INFO L226 Difference]: Without dead ends: 186 [2025-03-17 14:48:02,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 14:48:02,240 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 100 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:02,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 103 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 14:48:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-03-17 14:48:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 148. [2025-03-17 14:48:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 122 states have (on average 1.180327868852459) internal successors, (144), 123 states have internal predecessors, (144), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 168 transitions. [2025-03-17 14:48:02,252 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 168 transitions. Word has length 25 [2025-03-17 14:48:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:02,252 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 168 transitions. [2025-03-17 14:48:02,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 12 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 168 transitions. [2025-03-17 14:48:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-17 14:48:02,253 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:02,253 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:48:02,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:02,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 14:48:02,457 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:02,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:02,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1471345728, now seen corresponding path program 2 times [2025-03-17 14:48:02,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:02,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054048453] [2025-03-17 14:48:02,457 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:48:02,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:02,462 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-17 14:48:02,465 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:48:02,465 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:48:02,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-17 14:48:02,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:02,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054048453] [2025-03-17 14:48:02,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054048453] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:02,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831606830] [2025-03-17 14:48:02,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:48:02,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:02,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:02,503 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) [2025-03-17 14:48:02,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 14:48:02,523 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-03-17 14:48:02,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 14:48:02,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:48:02,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:02,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 14:48:02,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:48:02,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:02,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831606830] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:02,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:02,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 8] total 17 [2025-03-17 14:48:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641381337] [2025-03-17 14:48:02,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:02,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 14:48:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:02,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 14:48:02,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2025-03-17 14:48:02,706 INFO L87 Difference]: Start difference. First operand 148 states and 168 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (10), 7 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:02,841 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2025-03-17 14:48:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 14:48:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (10), 7 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-03-17 14:48:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:02,841 INFO L225 Difference]: With dead ends: 182 [2025-03-17 14:48:02,841 INFO L226 Difference]: Without dead ends: 64 [2025-03-17 14:48:02,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2025-03-17 14:48:02,842 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:02,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 66 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:48:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-17 14:48:02,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 41. [2025-03-17 14:48:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2025-03-17 14:48:02,847 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 25 [2025-03-17 14:48:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:02,847 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2025-03-17 14:48:02,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 11 states have internal predecessors, (44), 6 states have call successors, (10), 7 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2025-03-17 14:48:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-17 14:48:02,847 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:02,848 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:48:02,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:03,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:03,052 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:03,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:03,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1377321580, now seen corresponding path program 2 times [2025-03-17 14:48:03,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:03,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896076481] [2025-03-17 14:48:03,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:48:03,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:03,055 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 14:48:03,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 14:48:03,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:48:03,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896076481] [2025-03-17 14:48:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896076481] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014377605] [2025-03-17 14:48:03,188 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:48:03,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:03,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:03,193 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) [2025-03-17 14:48:03,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 14:48:03,210 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 14:48:03,217 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 14:48:03,217 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:48:03,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:03,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:48:03,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:03,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:03,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014377605] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:03,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:03,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2025-03-17 14:48:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235952242] [2025-03-17 14:48:03,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:03,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 14:48:03,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:03,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 14:48:03,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2025-03-17 14:48:03,369 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 24 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 14 states have internal predecessors, (51), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:03,744 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2025-03-17 14:48:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-17 14:48:03,747 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 14 states have internal predecessors, (51), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-03-17 14:48:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:03,748 INFO L225 Difference]: With dead ends: 105 [2025-03-17 14:48:03,748 INFO L226 Difference]: Without dead ends: 104 [2025-03-17 14:48:03,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=487, Invalid=1963, Unknown=0, NotChecked=0, Total=2450 [2025-03-17 14:48:03,749 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 129 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:03,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 71 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:48:03,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-17 14:48:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2025-03-17 14:48:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2025-03-17 14:48:03,760 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 31 [2025-03-17 14:48:03,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:03,761 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2025-03-17 14:48:03,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 14 states have internal predecessors, (51), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2025-03-17 14:48:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-17 14:48:03,762 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:03,762 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1] [2025-03-17 14:48:03,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 14:48:03,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:03,963 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:03,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 489705393, now seen corresponding path program 2 times [2025-03-17 14:48:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:03,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472557700] [2025-03-17 14:48:03,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:48:03,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:03,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-17 14:48:03,971 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 14:48:03,971 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:48:03,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:04,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:04,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472557700] [2025-03-17 14:48:04,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472557700] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:04,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897694116] [2025-03-17 14:48:04,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:48:04,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:04,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:04,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:48:04,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 14:48:04,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-03-17 14:48:04,162 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 14:48:04,162 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:48:04,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:04,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 14:48:04,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:04,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:04,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897694116] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:04,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:04,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2025-03-17 14:48:04,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117540381] [2025-03-17 14:48:04,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:04,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-17 14:48:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:04,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-17 14:48:04,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2025-03-17 14:48:04,419 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 32 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 18 states have internal predecessors, (71), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:04,711 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2025-03-17 14:48:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 14:48:04,712 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 18 states have internal predecessors, (71), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-03-17 14:48:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:04,713 INFO L225 Difference]: With dead ends: 140 [2025-03-17 14:48:04,713 INFO L226 Difference]: Without dead ends: 139 [2025-03-17 14:48:04,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=2229, Unknown=0, NotChecked=0, Total=2652 [2025-03-17 14:48:04,714 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 131 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:04,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 98 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:48:04,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-03-17 14:48:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 129. [2025-03-17 14:48:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 107 states have internal predecessors, (111), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2025-03-17 14:48:04,725 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 43 [2025-03-17 14:48:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:04,726 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2025-03-17 14:48:04,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 18 states have internal predecessors, (71), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2025-03-17 14:48:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-17 14:48:04,726 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:04,727 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1] [2025-03-17 14:48:04,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:04,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-17 14:48:04,927 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:04,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1220681467, now seen corresponding path program 3 times [2025-03-17 14:48:04,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:04,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860864421] [2025-03-17 14:48:04,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:48:04,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:04,931 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 61 statements into 10 equivalence classes. [2025-03-17 14:48:04,939 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 61 of 61 statements. [2025-03-17 14:48:04,940 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-03-17 14:48:04,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:05,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:05,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860864421] [2025-03-17 14:48:05,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860864421] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:05,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786161675] [2025-03-17 14:48:05,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:48:05,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:05,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:05,252 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:48:05,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 14:48:05,270 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 61 statements into 10 equivalence classes. [2025-03-17 14:48:05,287 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 61 of 61 statements. [2025-03-17 14:48:05,287 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-03-17 14:48:05,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:05,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 14:48:05,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:05,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:05,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786161675] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:05,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:05,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2025-03-17 14:48:05,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351220109] [2025-03-17 14:48:05,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:05,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-17 14:48:05,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:05,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-17 14:48:05,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2025-03-17 14:48:05,674 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand has 44 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 24 states have internal predecessors, (101), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:06,867 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2025-03-17 14:48:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2025-03-17 14:48:06,868 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 24 states have internal predecessors, (101), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-03-17 14:48:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:06,869 INFO L225 Difference]: With dead ends: 245 [2025-03-17 14:48:06,869 INFO L226 Difference]: Without dead ends: 244 [2025-03-17 14:48:06,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2251, Invalid=9739, Unknown=0, NotChecked=0, Total=11990 [2025-03-17 14:48:06,873 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 516 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:06,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 59 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:48:06,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-03-17 14:48:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2025-03-17 14:48:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 197 states have (on average 1.0253807106598984) internal successors, (202), 197 states have internal predecessors, (202), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:06,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2025-03-17 14:48:06,898 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 61 [2025-03-17 14:48:06,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:06,899 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 241 transitions. [2025-03-17 14:48:06,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 24 states have internal predecessors, (101), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:06,899 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 241 transitions. [2025-03-17 14:48:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-17 14:48:06,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:06,900 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1] [2025-03-17 14:48:06,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:07,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-17 14:48:07,104 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:07,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1813327583, now seen corresponding path program 4 times [2025-03-17 14:48:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091986411] [2025-03-17 14:48:07,105 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:48:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:07,108 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-03-17 14:48:07,122 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 14:48:07,122 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:48:07,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091986411] [2025-03-17 14:48:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091986411] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317172286] [2025-03-17 14:48:07,641 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:48:07,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:07,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:07,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:48:07,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 14:48:07,674 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 91 statements into 2 equivalence classes. [2025-03-17 14:48:07,695 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-03-17 14:48:07,695 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:48:07,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:07,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-17 14:48:07,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:07,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:08,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317172286] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:08,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:08,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2025-03-17 14:48:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694746843] [2025-03-17 14:48:08,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:08,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-03-17 14:48:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:08,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-03-17 14:48:08,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=3484, Unknown=0, NotChecked=0, Total=4032 [2025-03-17 14:48:08,413 INFO L87 Difference]: Start difference. First operand 237 states and 241 transitions. Second operand has 64 states, 61 states have (on average 2.4754098360655736) internal successors, (151), 34 states have internal predecessors, (151), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:09,234 INFO L93 Difference]: Finished difference Result 304 states and 312 transitions. [2025-03-17 14:48:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-03-17 14:48:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 61 states have (on average 2.4754098360655736) internal successors, (151), 34 states have internal predecessors, (151), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2025-03-17 14:48:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:09,236 INFO L225 Difference]: With dead ends: 304 [2025-03-17 14:48:09,236 INFO L226 Difference]: Without dead ends: 303 [2025-03-17 14:48:09,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1735, Invalid=9821, Unknown=0, NotChecked=0, Total=11556 [2025-03-17 14:48:09,239 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 388 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:09,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 158 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 14:48:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2025-03-17 14:48:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2025-03-17 14:48:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 242 states have (on average 1.024793388429752) internal successors, (248), 242 states have internal predecessors, (248), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 296 transitions. [2025-03-17 14:48:09,262 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 296 transitions. Word has length 91 [2025-03-17 14:48:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:09,262 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 296 transitions. [2025-03-17 14:48:09,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 61 states have (on average 2.4754098360655736) internal successors, (151), 34 states have internal predecessors, (151), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 296 transitions. [2025-03-17 14:48:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-17 14:48:09,263 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:09,263 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:48:09,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:09,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 14:48:09,465 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:09,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash 515980404, now seen corresponding path program 3 times [2025-03-17 14:48:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:09,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379487622] [2025-03-17 14:48:09,465 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:48:09,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:09,469 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 127 statements into 21 equivalence classes. [2025-03-17 14:48:09,490 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 127 of 127 statements. [2025-03-17 14:48:09,491 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-03-17 14:48:09,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:10,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379487622] [2025-03-17 14:48:10,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379487622] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915205750] [2025-03-17 14:48:10,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:48:10,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:10,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:10,349 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:48:10,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 14:48:10,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 127 statements into 21 equivalence classes. [2025-03-17 14:48:10,403 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 127 of 127 statements. [2025-03-17 14:48:10,403 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-03-17 14:48:10,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:10,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-17 14:48:10,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:10,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:11,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915205750] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:11,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:11,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2025-03-17 14:48:11,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145625381] [2025-03-17 14:48:11,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:11,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2025-03-17 14:48:11,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:11,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2025-03-17 14:48:11,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=6640, Unknown=0, NotChecked=0, Total=7656 [2025-03-17 14:48:11,505 INFO L87 Difference]: Start difference. First operand 291 states and 296 transitions. Second operand has 88 states, 85 states have (on average 2.4823529411764707) internal successors, (211), 46 states have internal predecessors, (211), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:14,796 INFO L93 Difference]: Finished difference Result 493 states and 523 transitions. [2025-03-17 14:48:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2025-03-17 14:48:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 85 states have (on average 2.4823529411764707) internal successors, (211), 46 states have internal predecessors, (211), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2025-03-17 14:48:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:14,798 INFO L225 Difference]: With dead ends: 493 [2025-03-17 14:48:14,798 INFO L226 Difference]: Without dead ends: 492 [2025-03-17 14:48:14,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16738 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=9399, Invalid=41451, Unknown=0, NotChecked=0, Total=50850 [2025-03-17 14:48:14,805 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 637 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:14,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 199 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 14:48:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2025-03-17 14:48:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 483. [2025-03-17 14:48:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 402 states have (on average 1.0174129353233832) internal successors, (409), 402 states have internal predecessors, (409), 80 states have call successors, (80), 80 states have call predecessors, (80), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 489 transitions. [2025-03-17 14:48:14,856 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 489 transitions. Word has length 127 [2025-03-17 14:48:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:14,857 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 489 transitions. [2025-03-17 14:48:14,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 85 states have (on average 2.4823529411764707) internal successors, (211), 46 states have internal predecessors, (211), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 489 transitions. [2025-03-17 14:48:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-17 14:48:14,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:14,858 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1, 1, 1] [2025-03-17 14:48:14,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:15,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 14:48:15,059 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:15,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:15,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2121796607, now seen corresponding path program 5 times [2025-03-17 14:48:15,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:15,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634742881] [2025-03-17 14:48:15,059 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:48:15,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:15,065 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 187 statements into 31 equivalence classes. [2025-03-17 14:48:15,117 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 187 of 187 statements. [2025-03-17 14:48:15,117 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-03-17 14:48:15,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:16,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:16,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:16,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634742881] [2025-03-17 14:48:16,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634742881] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:16,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859649173] [2025-03-17 14:48:16,394 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:48:16,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:16,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:16,395 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:48:16,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 14:48:16,423 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 187 statements into 31 equivalence classes. [2025-03-17 14:48:16,494 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 187 of 187 statements. [2025-03-17 14:48:16,494 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-03-17 14:48:16,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:16,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-17 14:48:16,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:16,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:18,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859649173] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:18,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:18,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2025-03-17 14:48:18,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274419495] [2025-03-17 14:48:18,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:18,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2025-03-17 14:48:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:18,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2025-03-17 14:48:18,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2116, Invalid=14140, Unknown=0, NotChecked=0, Total=16256 [2025-03-17 14:48:18,514 INFO L87 Difference]: Start difference. First operand 483 states and 489 transitions. Second operand has 128 states, 125 states have (on average 2.488) internal successors, (311), 66 states have internal predecessors, (311), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:21,092 INFO L93 Difference]: Finished difference Result 628 states and 644 transitions. [2025-03-17 14:48:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2025-03-17 14:48:21,092 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 125 states have (on average 2.488) internal successors, (311), 66 states have internal predecessors, (311), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2025-03-17 14:48:21,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:21,094 INFO L225 Difference]: With dead ends: 628 [2025-03-17 14:48:21,094 INFO L226 Difference]: Without dead ends: 627 [2025-03-17 14:48:21,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14653 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7047, Invalid=41133, Unknown=0, NotChecked=0, Total=48180 [2025-03-17 14:48:21,097 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 988 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:21,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 299 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 14:48:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2025-03-17 14:48:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 609. [2025-03-17 14:48:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 507 states have (on average 1.0236686390532543) internal successors, (519), 507 states have internal predecessors, (519), 101 states have call successors, (101), 101 states have call predecessors, (101), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 620 transitions. [2025-03-17 14:48:21,155 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 620 transitions. Word has length 187 [2025-03-17 14:48:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:21,155 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 620 transitions. [2025-03-17 14:48:21,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 125 states have (on average 2.488) internal successors, (311), 66 states have internal predecessors, (311), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:21,155 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 620 transitions. [2025-03-17 14:48:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2025-03-17 14:48:21,157 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:21,157 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 1, 1, 1, 1] [2025-03-17 14:48:21,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-17 14:48:21,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 14:48:21,358 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:21,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:21,358 INFO L85 PathProgramCache]: Analyzing trace with hash 756970683, now seen corresponding path program 6 times [2025-03-17 14:48:21,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:21,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412855371] [2025-03-17 14:48:21,358 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:48:21,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:21,364 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 253 statements into 42 equivalence classes. [2025-03-17 14:48:21,420 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) and asserted 253 of 253 statements. [2025-03-17 14:48:21,421 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2025-03-17 14:48:21,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 0 proven. 5084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:23,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:23,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412855371] [2025-03-17 14:48:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412855371] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:23,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716742179] [2025-03-17 14:48:23,700 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:48:23,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:23,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:23,702 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:48:23,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 14:48:23,728 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 253 statements into 42 equivalence classes. [2025-03-17 14:48:23,805 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) and asserted 253 of 253 statements. [2025-03-17 14:48:23,805 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2025-03-17 14:48:23,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:23,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 86 conjuncts are in the unsatisfiable core [2025-03-17 14:48:23,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 0 proven. 5084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:24,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5084 backedges. 0 proven. 5084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:27,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716742179] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:27,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:27,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 171 [2025-03-17 14:48:27,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108349759] [2025-03-17 14:48:27,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:27,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2025-03-17 14:48:27,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:27,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2025-03-17 14:48:27,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3786, Invalid=25626, Unknown=0, NotChecked=0, Total=29412 [2025-03-17 14:48:27,165 INFO L87 Difference]: Start difference. First operand 609 states and 620 transitions. Second operand has 172 states, 169 states have (on average 2.4911242603550297) internal successors, (421), 88 states have internal predecessors, (421), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:39,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:48:39,497 INFO L93 Difference]: Finished difference Result 1021 states and 1085 transitions. [2025-03-17 14:48:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 378 states. [2025-03-17 14:48:39,497 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 169 states have (on average 2.4911242603550297) internal successors, (421), 88 states have internal predecessors, (421), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2025-03-17 14:48:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:48:39,500 INFO L225 Difference]: With dead ends: 1021 [2025-03-17 14:48:39,500 INFO L226 Difference]: Without dead ends: 1020 [2025-03-17 14:48:39,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71933 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=39019, Invalid=173963, Unknown=0, NotChecked=0, Total=212982 [2025-03-17 14:48:39,508 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 2899 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 14:48:39,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2899 Valid, 117 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 14:48:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2025-03-17 14:48:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1005. [2025-03-17 14:48:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 837 states have (on average 1.015531660692951) internal successors, (850), 837 states have internal predecessors, (850), 167 states have call successors, (167), 167 states have call predecessors, (167), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1017 transitions. [2025-03-17 14:48:39,613 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1017 transitions. Word has length 253 [2025-03-17 14:48:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:48:39,613 INFO L471 AbstractCegarLoop]: Abstraction has 1005 states and 1017 transitions. [2025-03-17 14:48:39,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 169 states have (on average 2.4911242603550297) internal successors, (421), 88 states have internal predecessors, (421), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:48:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1017 transitions. [2025-03-17 14:48:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-03-17 14:48:39,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:48:39,617 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 1, 1, 1, 1] [2025-03-17 14:48:39,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 14:48:39,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-17 14:48:39,818 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:48:39,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:48:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1503479359, now seen corresponding path program 7 times [2025-03-17 14:48:39,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:48:39,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040095475] [2025-03-17 14:48:39,818 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:48:39,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:48:39,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-17 14:48:39,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-17 14:48:39,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:48:39,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:48:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040095475] [2025-03-17 14:48:44,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040095475] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:48:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433762154] [2025-03-17 14:48:44,823 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:48:44,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:48:44,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:48:44,825 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:48:44,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 14:48:44,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-03-17 14:48:44,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-03-17 14:48:44,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:48:44,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:48:44,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 128 conjuncts are in the unsatisfiable core [2025-03-17 14:48:44,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:48:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:45,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:48:52,259 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:48:52,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433762154] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:48:52,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:48:52,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 255 [2025-03-17 14:48:52,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460303842] [2025-03-17 14:48:52,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:48:52,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2025-03-17 14:48:52,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:48:52,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2025-03-17 14:48:52,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8324, Invalid=56956, Unknown=0, NotChecked=0, Total=65280 [2025-03-17 14:48:52,267 INFO L87 Difference]: Start difference. First operand 1005 states and 1017 transitions. Second operand has 256 states, 253 states have (on average 2.494071146245059) internal successors, (631), 130 states have internal predecessors, (631), 126 states have call successors, (126), 126 states have call predecessors, (126), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:49:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:02,171 INFO L93 Difference]: Finished difference Result 1280 states and 1312 transitions. [2025-03-17 14:49:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 317 states. [2025-03-17 14:49:02,172 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 253 states have (on average 2.494071146245059) internal successors, (631), 130 states have internal predecessors, (631), 126 states have call successors, (126), 126 states have call predecessors, (126), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 379 [2025-03-17 14:49:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:02,175 INFO L225 Difference]: With dead ends: 1280 [2025-03-17 14:49:02,175 INFO L226 Difference]: Without dead ends: 1279 [2025-03-17 14:49:02,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 442 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62525 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=28423, Invalid=168269, Unknown=0, NotChecked=0, Total=196692 [2025-03-17 14:49:02,183 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 2209 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2209 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:02,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2209 Valid, 553 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 14:49:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2025-03-17 14:49:02,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1251. [2025-03-17 14:49:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1042 states have (on average 1.021113243761996) internal successors, (1064), 1042 states have internal predecessors, (1064), 208 states have call successors, (208), 208 states have call predecessors, (208), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:49:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1272 transitions. [2025-03-17 14:49:02,289 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1272 transitions. Word has length 379 [2025-03-17 14:49:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:02,290 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 1272 transitions. [2025-03-17 14:49:02,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 253 states have (on average 2.494071146245059) internal successors, (631), 130 states have internal predecessors, (631), 126 states have call successors, (126), 126 states have call predecessors, (126), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:49:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1272 transitions. [2025-03-17 14:49:02,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2025-03-17 14:49:02,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:02,294 INFO L218 NwaCegarLoop]: trace histogram [85, 85, 84, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:02,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 14:49:02,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:02,495 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-17 14:49:02,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash 220084212, now seen corresponding path program 4 times [2025-03-17 14:49:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:02,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19380805] [2025-03-17 14:49:02,495 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:49:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:02,505 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 511 statements into 2 equivalence classes. [2025-03-17 14:49:02,706 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 511 of 511 statements. [2025-03-17 14:49:02,706 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:49:02,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:49:11,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19380805] [2025-03-17 14:49:11,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19380805] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911620608] [2025-03-17 14:49:11,705 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:49:11,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:11,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:11,707 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:49:11,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 14:49:11,748 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 511 statements into 2 equivalence classes. [2025-03-17 14:49:12,475 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 511 of 511 statements. [2025-03-17 14:49:12,475 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:49:12,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:12,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 172 conjuncts are in the unsatisfiable core [2025-03-17 14:49:12,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:49:12,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:49:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911620608] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:25,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:25,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172, 172] total 343 [2025-03-17 14:49:25,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952568272] [2025-03-17 14:49:25,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:25,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 344 states [2025-03-17 14:49:25,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:25,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 344 interpolants. [2025-03-17 14:49:25,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14968, Invalid=103024, Unknown=0, NotChecked=0, Total=117992 [2025-03-17 14:49:25,061 INFO L87 Difference]: Start difference. First operand 1251 states and 1272 transitions. Second operand has 344 states, 341 states have (on average 2.495601173020528) internal successors, (851), 174 states have internal predecessors, (851), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)