./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter3.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-numeric/rec_counter3.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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:49:25,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:49:25,635 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-03-17 14:49:25,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:49:25,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:49:25,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:49:25,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:49:25,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:49:25,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:49:25,656 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:49:25,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:49:25,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:49:25,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 14:49:25,657 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:49:25,658 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:49:25,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:49:25,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:49:25,658 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 -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2025-03-17 14:49:25,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:49:25,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:49:25,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:49:25,890 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:49:25,890 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:49:25,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter3.c [2025-03-17 14:49:26,938 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781ee3092/eaf90e85e3f34e7d9115f3bf33649304/FLAG6c3276cd8 [2025-03-17 14:49:27,159 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:49:27,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter3.c [2025-03-17 14:49:27,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781ee3092/eaf90e85e3f34e7d9115f3bf33649304/FLAG6c3276cd8 [2025-03-17 14:49:27,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/781ee3092/eaf90e85e3f34e7d9115f3bf33649304 [2025-03-17 14:49:27,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:49:27,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:49:27,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:49:27,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:49:27,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:49:27,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644b0937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27, skipping insertion in model container [2025-03-17 14:49:27,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:49:27,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:49:27,612 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:49:27,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:49:27,632 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:49:27,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27 WrapperNode [2025-03-17 14:49:27,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:49:27,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:49:27,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:49:27,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:49:27,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,649 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2025-03-17 14:49:27,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:49:27,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:49:27,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:49:27,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:49:27,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,658 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-17 14:49:27,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,659 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:49:27,661 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:49:27,661 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:49:27,661 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:49:27,662 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (1/1) ... [2025-03-17 14:49:27,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:49:27,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:27,683 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 14:49:27,685 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 14:49:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2025-03-17 14:49:27,699 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2025-03-17 14:49:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:49:27,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:49:27,729 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:49:27,730 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:49:27,791 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7: havoc ~res~0, ~rescopy~0; [2025-03-17 14:49:27,810 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-17 14:49:27,810 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:49:27,815 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:49:27,815 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:49:27,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:49:27 BoogieIcfgContainer [2025-03-17 14:49:27,816 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:49:27,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:49:27,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:49:27,820 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:49:27,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:49:27" (1/3) ... [2025-03-17 14:49:27,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b42f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:49:27, skipping insertion in model container [2025-03-17 14:49:27,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:49:27" (2/3) ... [2025-03-17 14:49:27,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b42f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:49:27, skipping insertion in model container [2025-03-17 14:49:27,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:49:27" (3/3) ... [2025-03-17 14:49:27,821 INFO L128 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2025-03-17 14:49:27,832 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:49:27,834 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rec_counter3.c that has 2 procedures, 27 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-03-17 14:49:27,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:49:27,877 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;@27b18f02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:49:27,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-17 14:49:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 14:49:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 14:49:27,883 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:27,883 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 14:49:27,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:27,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:27,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1744609585, now seen corresponding path program 1 times [2025-03-17 14:49:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:27,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820636817] [2025-03-17 14:49:27,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:27,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:27,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 14:49:27,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 14:49:27,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:27,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:28,025 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 14:49:28,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:28,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820636817] [2025-03-17 14:49:28,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820636817] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:49:28,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:49:28,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:49:28,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64006995] [2025-03-17 14:49:28,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:49:28,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:49:28,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:28,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:49:28,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:49:28,049 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 14:49:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:28,128 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2025-03-17 14:49:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:49:28,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 6 [2025-03-17 14:49:28,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:28,135 INFO L225 Difference]: With dead ends: 54 [2025-03-17 14:49:28,135 INFO L226 Difference]: Without dead ends: 38 [2025-03-17 14:49:28,137 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 14:49:28,141 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:28,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 96 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-17 14:49:28,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2025-03-17 14:49:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.565217391304348) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 14:49:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2025-03-17 14:49:28,165 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 6 [2025-03-17 14:49:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:28,165 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2025-03-17 14:49:28,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 14:49:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2025-03-17 14:49:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 14:49:28,166 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:28,166 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:28,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:49:28,166 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:28,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:28,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1751677729, now seen corresponding path program 1 times [2025-03-17 14:49:28,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:28,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738973500] [2025-03-17 14:49:28,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:28,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:28,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 14:49:28,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 14:49:28,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:28,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:28,216 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 14:49:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738973500] [2025-03-17 14:49:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738973500] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:49:28,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:49:28,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:49:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577575342] [2025-03-17 14:49:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:49:28,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:49:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:28,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:49:28,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:49:28,220 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 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 14:49:28,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:28,259 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2025-03-17 14:49:28,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:49:28,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 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 14:49:28,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:28,262 INFO L225 Difference]: With dead ends: 35 [2025-03-17 14:49:28,262 INFO L226 Difference]: Without dead ends: 34 [2025-03-17 14:49:28,262 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 14:49:28,262 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:28,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:28,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-03-17 14:49:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2025-03-17 14:49:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 14:49:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2025-03-17 14:49:28,270 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 7 [2025-03-17 14:49:28,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:28,270 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2025-03-17 14:49:28,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 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 14:49:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2025-03-17 14:49:28,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-17 14:49:28,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:28,271 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:28,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:49:28,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:28,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1148995313, now seen corresponding path program 1 times [2025-03-17 14:49:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:28,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084531231] [2025-03-17 14:49:28,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:28,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 14:49:28,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 14:49:28,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:28,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:28,350 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 14:49:28,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:28,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084531231] [2025-03-17 14:49:28,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084531231] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:28,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326588261] [2025-03-17 14:49:28,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:28,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:28,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:28,353 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 14:49:28,354 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 14:49:28,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 14:49:28,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 14:49:28,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:28,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:28,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:49:28,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:28,422 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 14:49:28,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:28,493 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 14:49:28,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326588261] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:28,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:28,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-03-17 14:49:28,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914692456] [2025-03-17 14:49:28,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:28,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 14:49:28,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:28,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 14:49:28,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-03-17 14:49:28,495 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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 14:49:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:28,562 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2025-03-17 14:49:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:49:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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 11 [2025-03-17 14:49:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:28,563 INFO L225 Difference]: With dead ends: 38 [2025-03-17 14:49:28,563 INFO L226 Difference]: Without dead ends: 37 [2025-03-17 14:49:28,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2025-03-17 14:49:28,564 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 114 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:28,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 68 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-17 14:49:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-03-17 14:49:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.434782608695652) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 14:49:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2025-03-17 14:49:28,569 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2025-03-17 14:49:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:28,569 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2025-03-17 14:49:28,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 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 14:49:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2025-03-17 14:49:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-17 14:49:28,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:28,570 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:28,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 14:49:28,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:28,776 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:28,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1873751025, now seen corresponding path program 1 times [2025-03-17 14:49:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:28,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587915392] [2025-03-17 14:49:28,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:28,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:49:28,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:49:28,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:28,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:49:28,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:28,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587915392] [2025-03-17 14:49:28,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587915392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:49:28,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:49:28,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:49:28,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336914959] [2025-03-17 14:49:28,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:49:28,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:49:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:28,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:49:28,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:49:28,817 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:28,840 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2025-03-17 14:49:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:49:28,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-03-17 14:49:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:28,843 INFO L225 Difference]: With dead ends: 31 [2025-03-17 14:49:28,843 INFO L226 Difference]: Without dead ends: 30 [2025-03-17 14:49:28,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:49:28,843 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:28,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-03-17 14:49:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-03-17 14:49:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 14:49:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2025-03-17 14:49:28,850 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2025-03-17 14:49:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:28,850 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2025-03-17 14:49:28,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2025-03-17 14:49:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-17 14:49:28,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:28,850 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:28,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:49:28,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:28,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1873751052, now seen corresponding path program 1 times [2025-03-17 14:49:28,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:28,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278180993] [2025-03-17 14:49:28,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:28,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:28,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 14:49:28,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 14:49:28,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:28,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:49:28,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:28,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278180993] [2025-03-17 14:49:28,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278180993] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:49:28,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:49:28,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 14:49:28,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413919665] [2025-03-17 14:49:28,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:49:28,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:49:28,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:28,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:49:28,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:49:28,895 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:28,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:28,900 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2025-03-17 14:49:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:49:28,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-03-17 14:49:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:28,901 INFO L225 Difference]: With dead ends: 30 [2025-03-17 14:49:28,901 INFO L226 Difference]: Without dead ends: 29 [2025-03-17 14:49:28,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:49:28,902 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:28,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 28 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:28,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-17 14:49:28,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-03-17 14:49:28,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 14:49:28,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2025-03-17 14:49:28,906 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 15 [2025-03-17 14:49:28,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:28,906 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2025-03-17 14:49:28,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2025-03-17 14:49:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 14:49:28,906 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:28,906 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:28,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 14:49:28,907 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:28,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:28,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2043260393, now seen corresponding path program 1 times [2025-03-17 14:49:28,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:28,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451451409] [2025-03-17 14:49:28,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:28,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:28,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:49:28,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:49:28,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:28,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:49:28,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:28,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451451409] [2025-03-17 14:49:28,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451451409] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:49:28,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:49:28,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:49:28,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582251403] [2025-03-17 14:49:28,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:49:28,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:49:28,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:28,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:49:28,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:49:28,965 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:28,979 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2025-03-17 14:49:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 14:49:28,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2025-03-17 14:49:28,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:28,980 INFO L225 Difference]: With dead ends: 51 [2025-03-17 14:49:28,980 INFO L226 Difference]: Without dead ends: 35 [2025-03-17 14:49:28,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:49:28,981 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:28,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-03-17 14:49:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-03-17 14:49:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-17 14:49:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2025-03-17 14:49:28,989 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2025-03-17 14:49:28,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:28,989 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2025-03-17 14:49:28,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2025-03-17 14:49:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 14:49:28,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:28,991 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:28,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 14:49:28,991 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:28,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2043259560, now seen corresponding path program 1 times [2025-03-17 14:49:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385080050] [2025-03-17 14:49:28,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:28,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:49:28,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:49:28,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:28,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:49:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385080050] [2025-03-17 14:49:29,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385080050] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:49:29,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:49:29,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:49:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991623544] [2025-03-17 14:49:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:49:29,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:49:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:29,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:49:29,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:49:29,031 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:29,050 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2025-03-17 14:49:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:49:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2025-03-17 14:49:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:29,052 INFO L225 Difference]: With dead ends: 42 [2025-03-17 14:49:29,052 INFO L226 Difference]: Without dead ends: 37 [2025-03-17 14:49:29,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:49:29,053 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:29,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-17 14:49:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-03-17 14:49:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 14:49:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2025-03-17 14:49:29,061 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 16 [2025-03-17 14:49:29,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:29,061 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2025-03-17 14:49:29,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2025-03-17 14:49:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-17 14:49:29,061 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:29,062 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:29,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 14:49:29,062 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:29,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:29,062 INFO L85 PathProgramCache]: Analyzing trace with hash 260461920, now seen corresponding path program 1 times [2025-03-17 14:49:29,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:29,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130730129] [2025-03-17 14:49:29,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:29,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:29,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 14:49:29,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 14:49:29,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:29,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 14:49:29,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130730129] [2025-03-17 14:49:29,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130730129] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:29,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097997007] [2025-03-17 14:49:29,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:29,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:29,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:29,160 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 14:49:29,160 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 14:49:29,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 14:49:29,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 14:49:29,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:29,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:29,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:49:29,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 14:49:29,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:49:29,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097997007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:49:29,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 14:49:29,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2025-03-17 14:49:29,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229943402] [2025-03-17 14:49:29,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:49:29,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:49:29,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:29,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:49:29,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-17 14:49:29,249 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 14:49:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:29,264 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2025-03-17 14:49:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:49:29,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2025-03-17 14:49:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:29,266 INFO L225 Difference]: With dead ends: 37 [2025-03-17 14:49:29,266 INFO L226 Difference]: Without dead ends: 36 [2025-03-17 14:49:29,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-17 14:49:29,267 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:29,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:29,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-17 14:49:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-03-17 14:49:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-17 14:49:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2025-03-17 14:49:29,271 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 27 [2025-03-17 14:49:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:29,271 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2025-03-17 14:49:29,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 14:49:29,271 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2025-03-17 14:49:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-17 14:49:29,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:29,271 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:49:29,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 14:49:29,474 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,SelfDestructingSolverStorable7 [2025-03-17 14:49:29,475 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:29,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1584864245, now seen corresponding path program 1 times [2025-03-17 14:49:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:29,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504504383] [2025-03-17 14:49:29,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:29,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:29,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 14:49:29,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 14:49:29,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:29,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 14:49:29,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:29,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504504383] [2025-03-17 14:49:29,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504504383] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:29,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68892567] [2025-03-17 14:49:29,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:49:29,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:29,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:29,567 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 14:49:29,568 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 14:49:29,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 14:49:29,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 14:49:29,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:29,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:29,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:49:29,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-17 14:49:29,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-17 14:49:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68892567] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:29,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2025-03-17 14:49:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235126848] [2025-03-17 14:49:29,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:29,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 14:49:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:29,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 14:49:29,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-03-17 14:49:29,752 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-17 14:49:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:29,806 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2025-03-17 14:49:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 14:49:29,806 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2025-03-17 14:49:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:29,807 INFO L225 Difference]: With dead ends: 91 [2025-03-17 14:49:29,807 INFO L226 Difference]: Without dead ends: 69 [2025-03-17 14:49:29,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2025-03-17 14:49:29,808 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:29,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 156 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:29,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-17 14:49:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2025-03-17 14:49:29,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-17 14:49:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2025-03-17 14:49:29,821 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 30 [2025-03-17 14:49:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:29,821 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2025-03-17 14:49:29,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-17 14:49:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2025-03-17 14:49:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-17 14:49:29,823 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:29,823 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-17 14:49:29,828 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 14:49:30,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:30,025 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:30,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1419142950, now seen corresponding path program 2 times [2025-03-17 14:49:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982924659] [2025-03-17 14:49:30,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:49:30,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:30,033 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-03-17 14:49:30,038 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-03-17 14:49:30,038 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:49:30,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-17 14:49:30,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:30,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982924659] [2025-03-17 14:49:30,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982924659] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:30,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477552046] [2025-03-17 14:49:30,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:49:30,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:30,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:30,092 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 14:49:30,093 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 14:49:30,115 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-03-17 14:49:30,129 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-03-17 14:49:30,129 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:49:30,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:30,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 14:49:30,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-03-17 14:49:30,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-03-17 14:49:30,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477552046] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:30,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:30,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 19 [2025-03-17 14:49:30,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612303067] [2025-03-17 14:49:30,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:30,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 14:49:30,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:30,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 14:49:30,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-03-17 14:49:30,616 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-17 14:49:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:30,738 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2025-03-17 14:49:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 14:49:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2025-03-17 14:49:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:30,739 INFO L225 Difference]: With dead ends: 132 [2025-03-17 14:49:30,739 INFO L226 Difference]: Without dead ends: 86 [2025-03-17 14:49:30,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 113 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2025-03-17 14:49:30,740 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:30,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:49:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-03-17 14:49:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2025-03-17 14:49:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 60 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-17 14:49:30,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2025-03-17 14:49:30,746 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 66 [2025-03-17 14:49:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:30,746 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2025-03-17 14:49:30,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 15 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-17 14:49:30,747 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2025-03-17 14:49:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-17 14:49:30,747 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:30,748 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2025-03-17 14:49:30,753 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 14:49:30,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:30,952 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:30,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:30,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1248670412, now seen corresponding path program 3 times [2025-03-17 14:49:30,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:30,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322030349] [2025-03-17 14:49:30,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:49:30,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:30,957 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 85 statements into 8 equivalence classes. [2025-03-17 14:49:30,961 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 85 statements. [2025-03-17 14:49:30,961 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 14:49:30,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-17 14:49:31,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322030349] [2025-03-17 14:49:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322030349] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:31,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227351545] [2025-03-17 14:49:31,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:49:31,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:31,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:31,062 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 14:49:31,063 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 14:49:31,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 85 statements into 8 equivalence classes. [2025-03-17 14:49:31,096 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 85 statements. [2025-03-17 14:49:31,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 14:49:31,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:31,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:49:31,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-17 14:49:31,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-17 14:49:31,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227351545] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:31,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:31,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-17 14:49:31,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889977360] [2025-03-17 14:49:31,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:31,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 14:49:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:31,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 14:49:31,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-03-17 14:49:31,312 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 14:49:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:31,438 INFO L93 Difference]: Finished difference Result 194 states and 228 transitions. [2025-03-17 14:49:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-17 14:49:31,439 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 85 [2025-03-17 14:49:31,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:31,440 INFO L225 Difference]: With dead ends: 194 [2025-03-17 14:49:31,440 INFO L226 Difference]: Without dead ends: 168 [2025-03-17 14:49:31,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2025-03-17 14:49:31,441 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:31,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:49:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-03-17 14:49:31,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 84. [2025-03-17 14:49:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 75 states have (on average 1.16) internal successors, (87), 75 states have internal predecessors, (87), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-17 14:49:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2025-03-17 14:49:31,452 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2025-03-17 14:49:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:31,452 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2025-03-17 14:49:31,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 14:49:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2025-03-17 14:49:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-17 14:49:31,456 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:31,456 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2025-03-17 14:49:31,467 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 14:49:31,656 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,SelfDestructingSolverStorable10 [2025-03-17 14:49:31,657 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:31,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash -212472524, now seen corresponding path program 4 times [2025-03-17 14:49:31,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:31,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827463138] [2025-03-17 14:49:31,658 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:49:31,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:31,662 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 87 statements into 2 equivalence classes. [2025-03-17 14:49:31,674 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-17 14:49:31,674 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:49:31,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-17 14:49:31,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:31,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827463138] [2025-03-17 14:49:31,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827463138] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:31,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288348549] [2025-03-17 14:49:31,772 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:49:31,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:31,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:31,774 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 14:49:31,776 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 14:49:31,804 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 87 statements into 2 equivalence classes. [2025-03-17 14:49:31,824 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-17 14:49:31,824 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:49:31,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:31,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 14:49:31,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-17 14:49:31,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-17 14:49:32,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288348549] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:32,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:32,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-03-17 14:49:32,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898273286] [2025-03-17 14:49:32,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:32,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 14:49:32,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:32,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 14:49:32,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2025-03-17 14:49:32,020 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:32,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:32,068 INFO L93 Difference]: Finished difference Result 174 states and 210 transitions. [2025-03-17 14:49:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 14:49:32,068 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2025-03-17 14:49:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:32,070 INFO L225 Difference]: With dead ends: 174 [2025-03-17 14:49:32,070 INFO L226 Difference]: Without dead ends: 169 [2025-03-17 14:49:32,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2025-03-17 14:49:32,071 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:32,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 14:49:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-03-17 14:49:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 108. [2025-03-17 14:49:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 99 states have (on average 1.1616161616161615) internal successors, (115), 99 states have internal predecessors, (115), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-17 14:49:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2025-03-17 14:49:32,085 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 87 [2025-03-17 14:49:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:32,085 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2025-03-17 14:49:32,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2025-03-17 14:49:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-17 14:49:32,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:32,088 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2025-03-17 14:49:32,094 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 14:49:32,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:32,288 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:32,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash -491790284, now seen corresponding path program 5 times [2025-03-17 14:49:32,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:32,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763280797] [2025-03-17 14:49:32,289 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:49:32,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:32,293 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 109 statements into 8 equivalence classes. [2025-03-17 14:49:32,318 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 109 of 109 statements. [2025-03-17 14:49:32,318 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-03-17 14:49:32,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 99 proven. 164 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2025-03-17 14:49:32,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763280797] [2025-03-17 14:49:32,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763280797] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611315510] [2025-03-17 14:49:32,491 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:49:32,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:32,493 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 14:49:32,495 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 14:49:32,522 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 109 statements into 8 equivalence classes. [2025-03-17 14:49:32,544 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 109 of 109 statements. [2025-03-17 14:49:32,544 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-03-17 14:49:32,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:32,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 14:49:32,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 259 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2025-03-17 14:49:32,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 259 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2025-03-17 14:49:33,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611315510] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:33,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:33,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 33 [2025-03-17 14:49:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49361090] [2025-03-17 14:49:33,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:33,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-17 14:49:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:33,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-17 14:49:33,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2025-03-17 14:49:33,270 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 34 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-17 14:49:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:33,738 INFO L93 Difference]: Finished difference Result 381 states and 446 transitions. [2025-03-17 14:49:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-03-17 14:49:33,739 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 109 [2025-03-17 14:49:33,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:33,740 INFO L225 Difference]: With dead ends: 381 [2025-03-17 14:49:33,740 INFO L226 Difference]: Without dead ends: 255 [2025-03-17 14:49:33,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=804, Invalid=4308, Unknown=0, NotChecked=0, Total=5112 [2025-03-17 14:49:33,742 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:33,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:49:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-03-17 14:49:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 183. [2025-03-17 14:49:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 169 states have (on average 1.183431952662722) internal successors, (200), 169 states have internal predecessors, (200), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-17 14:49:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 214 transitions. [2025-03-17 14:49:33,753 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 214 transitions. Word has length 109 [2025-03-17 14:49:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:33,753 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 214 transitions. [2025-03-17 14:49:33,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8484848484848486) internal successors, (94), 26 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-17 14:49:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 214 transitions. [2025-03-17 14:49:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2025-03-17 14:49:33,754 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:33,754 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 28, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-03-17 14:49:33,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 14:49:33,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:33,955 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:33,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash -951232081, now seen corresponding path program 6 times [2025-03-17 14:49:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:33,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880989767] [2025-03-17 14:49:33,956 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:49:33,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:33,962 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 199 statements into 11 equivalence classes. [2025-03-17 14:49:33,980 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 159 of 199 statements. [2025-03-17 14:49:33,980 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-17 14:49:33,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1929 backedges. 731 proven. 88 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2025-03-17 14:49:34,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880989767] [2025-03-17 14:49:34,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880989767] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481823044] [2025-03-17 14:49:34,156 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:49:34,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:34,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:34,159 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 14:49:34,160 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 14:49:34,198 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 199 statements into 11 equivalence classes. [2025-03-17 14:49:34,229 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 159 of 199 statements. [2025-03-17 14:49:34,229 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-03-17 14:49:34,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:34,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:49:34,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1929 backedges. 731 proven. 88 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2025-03-17 14:49:34,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1929 backedges. 731 proven. 88 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2025-03-17 14:49:34,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481823044] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:34,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:34,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2025-03-17 14:49:34,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126971568] [2025-03-17 14:49:34,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:34,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 14:49:34,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:34,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 14:49:34,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2025-03-17 14:49:34,659 INFO L87 Difference]: Start difference. First operand 183 states and 214 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 14:49:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:34,925 INFO L93 Difference]: Finished difference Result 702 states and 854 transitions. [2025-03-17 14:49:34,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-03-17 14:49:34,926 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 199 [2025-03-17 14:49:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:34,928 INFO L225 Difference]: With dead ends: 702 [2025-03-17 14:49:34,928 INFO L226 Difference]: Without dead ends: 651 [2025-03-17 14:49:34,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=430, Invalid=1462, Unknown=0, NotChecked=0, Total=1892 [2025-03-17 14:49:34,929 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:34,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:49:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2025-03-17 14:49:34,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 198. [2025-03-17 14:49:34,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 184 states have (on average 1.1956521739130435) internal successors, (220), 184 states have internal predecessors, (220), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-17 14:49:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 234 transitions. [2025-03-17 14:49:34,955 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 234 transitions. Word has length 199 [2025-03-17 14:49:34,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:34,955 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 234 transitions. [2025-03-17 14:49:34,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 14:49:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 234 transitions. [2025-03-17 14:49:34,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-03-17 14:49:34,956 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:34,956 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-03-17 14:49:34,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 14:49:35,157 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,SelfDestructingSolverStorable13 [2025-03-17 14:49:35,157 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:35,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:35,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1581890947, now seen corresponding path program 7 times [2025-03-17 14:49:35,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:35,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624296801] [2025-03-17 14:49:35,158 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:49:35,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:35,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-17 14:49:35,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-17 14:49:35,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:35,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 1368 proven. 51 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2025-03-17 14:49:35,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624296801] [2025-03-17 14:49:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624296801] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144749455] [2025-03-17 14:49:35,500 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:49:35,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:35,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:35,503 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 14:49:35,504 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 14:49:35,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-03-17 14:49:35,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-03-17 14:49:35,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:35,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:35,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 14:49:35,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 1060 proven. 88 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2025-03-17 14:49:35,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 1060 proven. 88 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2025-03-17 14:49:37,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144749455] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:37,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:37,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 23] total 30 [2025-03-17 14:49:37,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883790925] [2025-03-17 14:49:37,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:37,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-17 14:49:37,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:37,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-17 14:49:37,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2025-03-17 14:49:37,454 INFO L87 Difference]: Start difference. First operand 198 states and 234 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 25 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-17 14:49:37,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:37,830 INFO L93 Difference]: Finished difference Result 427 states and 510 transitions. [2025-03-17 14:49:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 14:49:37,831 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 25 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 214 [2025-03-17 14:49:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:37,832 INFO L225 Difference]: With dead ends: 427 [2025-03-17 14:49:37,832 INFO L226 Difference]: Without dead ends: 255 [2025-03-17 14:49:37,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 394 SyntacticMatches, 21 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=2057, Unknown=0, NotChecked=0, Total=2352 [2025-03-17 14:49:37,835 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:37,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 301 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 14:49:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-03-17 14:49:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 244. [2025-03-17 14:49:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 227 states have (on average 1.092511013215859) internal successors, (248), 227 states have internal predecessors, (248), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-17 14:49:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 265 transitions. [2025-03-17 14:49:37,850 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 265 transitions. Word has length 214 [2025-03-17 14:49:37,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:37,850 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 265 transitions. [2025-03-17 14:49:37,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 25 states have internal predecessors, (78), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-17 14:49:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 265 transitions. [2025-03-17 14:49:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2025-03-17 14:49:37,852 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:37,852 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-03-17 14:49:37,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 14:49:38,056 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,SelfDestructingSolverStorable14 [2025-03-17 14:49:38,056 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:38,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1589681005, now seen corresponding path program 8 times [2025-03-17 14:49:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:38,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520372473] [2025-03-17 14:49:38,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:49:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:38,063 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 223 statements into 2 equivalence classes. [2025-03-17 14:49:38,097 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 223 of 223 statements. [2025-03-17 14:49:38,097 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:49:38,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1654 proven. 90 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2025-03-17 14:49:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520372473] [2025-03-17 14:49:38,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520372473] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:38,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80408516] [2025-03-17 14:49:38,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:49:38,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:38,465 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 14:49:38,467 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 14:49:38,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 223 statements into 2 equivalence classes. [2025-03-17 14:49:38,562 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 223 of 223 statements. [2025-03-17 14:49:38,563 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:49:38,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:38,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 14:49:38,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1478 proven. 177 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2025-03-17 14:49:38,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1478 proven. 177 refuted. 0 times theorem prover too weak. 1110 trivial. 0 not checked. [2025-03-17 14:49:40,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80408516] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:40,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:40,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 28] total 37 [2025-03-17 14:49:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032741080] [2025-03-17 14:49:40,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:40,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-17 14:49:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:40,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-17 14:49:40,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2025-03-17 14:49:40,861 INFO L87 Difference]: Start difference. First operand 244 states and 265 transitions. Second operand has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-17 14:49:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:41,412 INFO L93 Difference]: Finished difference Result 502 states and 547 transitions. [2025-03-17 14:49:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-03-17 14:49:41,413 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 223 [2025-03-17 14:49:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:41,414 INFO L225 Difference]: With dead ends: 502 [2025-03-17 14:49:41,414 INFO L226 Difference]: Without dead ends: 330 [2025-03-17 14:49:41,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 404 SyntacticMatches, 26 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=512, Invalid=3910, Unknown=0, NotChecked=0, Total=4422 [2025-03-17 14:49:41,416 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:41,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 396 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 14:49:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2025-03-17 14:49:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 300. [2025-03-17 14:49:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 280 states have (on average 1.0785714285714285) internal successors, (302), 280 states have internal predecessors, (302), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 14:49:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 322 transitions. [2025-03-17 14:49:41,437 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 322 transitions. Word has length 223 [2025-03-17 14:49:41,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:41,437 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 322 transitions. [2025-03-17 14:49:41,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 31 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-17 14:49:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 322 transitions. [2025-03-17 14:49:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2025-03-17 14:49:41,441 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:41,442 INFO L218 NwaCegarLoop]: trace histogram [39, 39, 39, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-03-17 14:49:41,448 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 14:49:41,645 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,SelfDestructingSolverStorable15 [2025-03-17 14:49:41,645 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:41,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2034862411, now seen corresponding path program 9 times [2025-03-17 14:49:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:41,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683340769] [2025-03-17 14:49:41,646 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:49:41,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:41,652 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 242 statements into 13 equivalence classes. [2025-03-17 14:49:41,663 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 163 of 242 statements. [2025-03-17 14:49:41,664 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-03-17 14:49:41,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3237 backedges. 794 proven. 70 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2025-03-17 14:49:41,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683340769] [2025-03-17 14:49:41,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683340769] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227689630] [2025-03-17 14:49:41,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:49:41,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:41,866 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 14:49:41,868 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 14:49:41,959 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 242 statements into 13 equivalence classes. [2025-03-17 14:49:41,989 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 163 of 242 statements. [2025-03-17 14:49:41,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-03-17 14:49:41,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:41,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 14:49:41,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3237 backedges. 794 proven. 70 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2025-03-17 14:49:42,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3237 backedges. 794 proven. 70 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2025-03-17 14:49:42,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227689630] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:42,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:42,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2025-03-17 14:49:42,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326698544] [2025-03-17 14:49:42,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:42,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-17 14:49:42,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:42,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-17 14:49:42,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=815, Unknown=0, NotChecked=0, Total=1122 [2025-03-17 14:49:42,427 INFO L87 Difference]: Start difference. First operand 300 states and 322 transitions. Second operand has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:42,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:42,526 INFO L93 Difference]: Finished difference Result 665 states and 786 transitions. [2025-03-17 14:49:42,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-17 14:49:42,527 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 242 [2025-03-17 14:49:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:42,529 INFO L225 Difference]: With dead ends: 665 [2025-03-17 14:49:42,529 INFO L226 Difference]: Without dead ends: 660 [2025-03-17 14:49:42,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=815, Unknown=0, NotChecked=0, Total=1122 [2025-03-17 14:49:42,530 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:42,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:49:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2025-03-17 14:49:42,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 348. [2025-03-17 14:49:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 328 states have (on average 1.0914634146341464) internal successors, (358), 328 states have internal predecessors, (358), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-17 14:49:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 378 transitions. [2025-03-17 14:49:42,562 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 378 transitions. Word has length 242 [2025-03-17 14:49:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:42,563 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 378 transitions. [2025-03-17 14:49:42,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-17 14:49:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 378 transitions. [2025-03-17 14:49:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2025-03-17 14:49:42,565 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:42,565 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 47, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-03-17 14:49:42,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 14:49:42,769 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,SelfDestructingSolverStorable16 [2025-03-17 14:49:42,769 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:42,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:42,770 INFO L85 PathProgramCache]: Analyzing trace with hash 449409611, now seen corresponding path program 10 times [2025-03-17 14:49:42,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:42,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847442855] [2025-03-17 14:49:42,770 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:49:42,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:42,780 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 256 statements into 2 equivalence classes. [2025-03-17 14:49:42,842 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 256 of 256 statements. [2025-03-17 14:49:42,842 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:49:42,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4228 backedges. 2579 proven. 144 refuted. 0 times theorem prover too weak. 1505 trivial. 0 not checked. [2025-03-17 14:49:43,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847442855] [2025-03-17 14:49:43,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847442855] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365628347] [2025-03-17 14:49:43,315 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:49:43,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:43,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:43,316 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 14:49:43,317 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 14:49:43,410 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 256 statements into 2 equivalence classes. [2025-03-17 14:49:43,445 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 256 of 256 statements. [2025-03-17 14:49:43,445 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:49:43,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:43,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-03-17 14:49:43,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4228 backedges. 2439 proven. 311 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2025-03-17 14:49:43,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4228 backedges. 2439 proven. 311 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2025-03-17 14:49:46,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365628347] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:46,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:46,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 42 [2025-03-17 14:49:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142553604] [2025-03-17 14:49:46,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:46,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-17 14:49:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:46,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-17 14:49:46,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 14:49:46,416 INFO L87 Difference]: Start difference. First operand 348 states and 378 transitions. Second operand has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 35 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-17 14:49:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:47,356 INFO L93 Difference]: Finished difference Result 715 states and 776 transitions. [2025-03-17 14:49:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-03-17 14:49:47,356 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 35 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 256 [2025-03-17 14:49:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:47,358 INFO L225 Difference]: With dead ends: 715 [2025-03-17 14:49:47,358 INFO L226 Difference]: Without dead ends: 480 [2025-03-17 14:49:47,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 464 SyntacticMatches, 31 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2913 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=823, Invalid=6659, Unknown=0, NotChecked=0, Total=7482 [2025-03-17 14:49:47,361 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:47,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 462 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 14:49:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2025-03-17 14:49:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 428. [2025-03-17 14:49:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 404 states have (on average 1.0792079207920793) internal successors, (436), 404 states have internal predecessors, (436), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-17 14:49:47,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 460 transitions. [2025-03-17 14:49:47,394 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 460 transitions. Word has length 256 [2025-03-17 14:49:47,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:47,394 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 460 transitions. [2025-03-17 14:49:47,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4285714285714284) internal successors, (102), 35 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-17 14:49:47,394 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 460 transitions. [2025-03-17 14:49:47,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2025-03-17 14:49:47,395 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:47,396 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-03-17 14:49:47,402 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 14:49:47,596 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,SelfDestructingSolverStorable17 [2025-03-17 14:49:47,596 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:47,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1592721091, now seen corresponding path program 11 times [2025-03-17 14:49:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:47,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911995370] [2025-03-17 14:49:47,597 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:49:47,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:47,607 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 272 statements into 16 equivalence classes. [2025-03-17 14:49:47,638 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) and asserted 247 of 272 statements. [2025-03-17 14:49:47,638 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2025-03-17 14:49:47,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4642 backedges. 2840 proven. 188 refuted. 0 times theorem prover too weak. 1614 trivial. 0 not checked. [2025-03-17 14:49:48,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:48,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911995370] [2025-03-17 14:49:48,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911995370] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:48,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782153656] [2025-03-17 14:49:48,086 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:49:48,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:48,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:48,088 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 14:49:48,090 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 14:49:48,208 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 272 statements into 16 equivalence classes. [2025-03-17 14:49:48,247 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) and asserted 247 of 272 statements. [2025-03-17 14:49:48,248 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2025-03-17 14:49:48,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:48,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-17 14:49:48,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4642 backedges. 2895 proven. 518 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2025-03-17 14:49:48,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4642 backedges. 2921 proven. 492 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2025-03-17 14:49:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782153656] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:50,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:50,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 34, 34] total 45 [2025-03-17 14:49:50,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791982535] [2025-03-17 14:49:50,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:50,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-17 14:49:50,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:50,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-17 14:49:50,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1775, Unknown=0, NotChecked=0, Total=1980 [2025-03-17 14:49:50,480 INFO L87 Difference]: Start difference. First operand 428 states and 460 transitions. Second operand has 45 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 39 states have internal predecessors, (110), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-17 14:49:51,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:51,686 INFO L93 Difference]: Finished difference Result 868 states and 930 transitions. [2025-03-17 14:49:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-03-17 14:49:51,686 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 39 states have internal predecessors, (110), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 272 [2025-03-17 14:49:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:51,688 INFO L225 Difference]: With dead ends: 868 [2025-03-17 14:49:51,688 INFO L226 Difference]: Without dead ends: 618 [2025-03-17 14:49:51,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 497 SyntacticMatches, 31 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3841 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1340, Invalid=9166, Unknown=0, NotChecked=0, Total=10506 [2025-03-17 14:49:51,692 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:51,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 14:49:51,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2025-03-17 14:49:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2025-03-17 14:49:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 509 states have (on average 1.068762278978389) internal successors, (544), 509 states have internal predecessors, (544), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 26 states have call predecessors, (26), 2 states have call successors, (26) [2025-03-17 14:49:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 573 transitions. [2025-03-17 14:49:51,748 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 573 transitions. Word has length 272 [2025-03-17 14:49:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:51,749 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 573 transitions. [2025-03-17 14:49:51,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 39 states have internal predecessors, (110), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-17 14:49:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 573 transitions. [2025-03-17 14:49:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2025-03-17 14:49:51,751 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:51,751 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-03-17 14:49:51,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 14:49:51,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:51,952 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:51,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 738759983, now seen corresponding path program 12 times [2025-03-17 14:49:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:51,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139771581] [2025-03-17 14:49:51,952 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:49:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:51,964 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 265 statements into 16 equivalence classes. [2025-03-17 14:49:51,998 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 265 of 265 statements. [2025-03-17 14:49:51,998 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-17 14:49:51,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4690 backedges. 1772 proven. 330 refuted. 0 times theorem prover too weak. 2588 trivial. 0 not checked. [2025-03-17 14:49:52,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139771581] [2025-03-17 14:49:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139771581] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888625856] [2025-03-17 14:49:52,576 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:49:52,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:52,578 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 14:49:52,579 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 14:49:52,723 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 265 statements into 16 equivalence classes. [2025-03-17 14:49:52,768 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 265 of 265 statements. [2025-03-17 14:49:52,768 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-17 14:49:52,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:52,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-17 14:49:52,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4690 backedges. 2155 proven. 410 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2025-03-17 14:49:52,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4690 backedges. 2155 proven. 410 refuted. 0 times theorem prover too weak. 2125 trivial. 0 not checked. [2025-03-17 14:49:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888625856] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:53,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 20, 20] total 56 [2025-03-17 14:49:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335387408] [2025-03-17 14:49:53,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:53,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-17 14:49:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:53,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-17 14:49:53,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=690, Invalid=2502, Unknown=0, NotChecked=0, Total=3192 [2025-03-17 14:49:53,543 INFO L87 Difference]: Start difference. First operand 538 states and 573 transitions. Second operand has 57 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 55 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 14:49:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:49:54,809 INFO L93 Difference]: Finished difference Result 1984 states and 2311 transitions. [2025-03-17 14:49:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2025-03-17 14:49:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 55 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 265 [2025-03-17 14:49:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:49:54,815 INFO L225 Difference]: With dead ends: 1984 [2025-03-17 14:49:54,815 INFO L226 Difference]: Without dead ends: 1857 [2025-03-17 14:49:54,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3487 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2969, Invalid=11073, Unknown=0, NotChecked=0, Total=14042 [2025-03-17 14:49:54,819 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:49:54,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:49:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2025-03-17 14:49:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 637. [2025-03-17 14:49:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 608 states have (on average 1.0986842105263157) internal successors, (668), 608 states have internal predecessors, (668), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 26 states have call predecessors, (26), 2 states have call successors, (26) [2025-03-17 14:49:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 697 transitions. [2025-03-17 14:49:54,893 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 697 transitions. Word has length 265 [2025-03-17 14:49:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:49:54,893 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 697 transitions. [2025-03-17 14:49:54,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 55 states have internal predecessors, (108), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-17 14:49:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 697 transitions. [2025-03-17 14:49:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-17 14:49:54,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:49:54,895 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 75, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1] [2025-03-17 14:49:54,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-17 14:49:55,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:55,096 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:49:55,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:49:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash -824060163, now seen corresponding path program 13 times [2025-03-17 14:49:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:49:55,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744375311] [2025-03-17 14:49:55,097 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:49:55,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:49:55,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 14:49:55,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 14:49:55,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:55,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9590 backedges. 4537 proven. 1339 refuted. 0 times theorem prover too weak. 3714 trivial. 0 not checked. [2025-03-17 14:49:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:49:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744375311] [2025-03-17 14:49:55,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744375311] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:49:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80909029] [2025-03-17 14:49:55,961 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:49:55,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:49:55,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:49:55,963 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 14:49:55,964 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 14:49:56,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 14:49:56,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 14:49:56,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:49:56,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:49:56,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-17 14:49:56,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:49:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9590 backedges. 4556 proven. 1316 refuted. 0 times theorem prover too weak. 3718 trivial. 0 not checked. [2025-03-17 14:49:56,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:49:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9590 backedges. 4556 proven. 1316 refuted. 0 times theorem prover too weak. 3718 trivial. 0 not checked. [2025-03-17 14:49:59,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80909029] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:49:59,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:49:59,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 43 [2025-03-17 14:49:59,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086043141] [2025-03-17 14:49:59,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:49:59,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-17 14:49:59,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:49:59,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-17 14:49:59,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1587, Unknown=0, NotChecked=0, Total=1806 [2025-03-17 14:49:59,466 INFO L87 Difference]: Start difference. First operand 637 states and 697 transitions. Second operand has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 35 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-17 14:50:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:50:00,134 INFO L93 Difference]: Finished difference Result 939 states and 1039 transitions. [2025-03-17 14:50:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2025-03-17 14:50:00,134 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 35 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 340 [2025-03-17 14:50:00,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:50:00,136 INFO L225 Difference]: With dead ends: 939 [2025-03-17 14:50:00,136 INFO L226 Difference]: Without dead ends: 399 [2025-03-17 14:50:00,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 641 SyntacticMatches, 37 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2978 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1132, Invalid=7058, Unknown=0, NotChecked=0, Total=8190 [2025-03-17 14:50:00,139 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:50:00,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:50:00,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2025-03-17 14:50:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2025-03-17 14:50:00,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 384 states have (on average 1.1015625) internal successors, (423), 384 states have internal predecessors, (423), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-17 14:50:00,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 438 transitions. [2025-03-17 14:50:00,171 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 438 transitions. Word has length 340 [2025-03-17 14:50:00,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:50:00,172 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 438 transitions. [2025-03-17 14:50:00,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.302325581395349) internal successors, (99), 35 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-17 14:50:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 438 transitions. [2025-03-17 14:50:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2025-03-17 14:50:00,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:50:00,186 INFO L218 NwaCegarLoop]: trace histogram [82, 82, 82, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2025-03-17 14:50:00,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 14:50:00,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:00,390 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:50:00,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:50:00,390 INFO L85 PathProgramCache]: Analyzing trace with hash 400516600, now seen corresponding path program 14 times [2025-03-17 14:50:00,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:50:00,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276279257] [2025-03-17 14:50:00,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:50:00,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:50:00,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 372 statements into 2 equivalence classes. [2025-03-17 14:50:00,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 372 of 372 statements. [2025-03-17 14:50:00,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:50:00,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11492 backedges. 5212 proven. 4855 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2025-03-17 14:50:02,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:50:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276279257] [2025-03-17 14:50:02,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276279257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:50:02,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436031021] [2025-03-17 14:50:02,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:50:02,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:02,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:50:02,540 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:50:02,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 14:50:02,741 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 372 statements into 2 equivalence classes. [2025-03-17 14:50:02,804 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 372 of 372 statements. [2025-03-17 14:50:02,804 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:50:02,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:02,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-17 14:50:02,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:50:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11492 backedges. 5603 proven. 3267 refuted. 0 times theorem prover too weak. 2622 trivial. 0 not checked. [2025-03-17 14:50:03,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:50:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 11492 backedges. 5603 proven. 3267 refuted. 0 times theorem prover too weak. 2622 trivial. 0 not checked. [2025-03-17 14:50:08,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436031021] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:50:08,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:50:08,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 50, 50] total 81 [2025-03-17 14:50:08,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394438283] [2025-03-17 14:50:08,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:50:08,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2025-03-17 14:50:08,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:50:08,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2025-03-17 14:50:08,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=795, Invalid=5685, Unknown=0, NotChecked=0, Total=6480 [2025-03-17 14:50:08,008 INFO L87 Difference]: Start difference. First operand 399 states and 438 transitions. Second operand has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 71 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 11 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-17 14:50:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:50:10,018 INFO L93 Difference]: Finished difference Result 751 states and 836 transitions. [2025-03-17 14:50:10,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2025-03-17 14:50:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 71 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 11 states have call predecessors, (12), 1 states have call successors, (12) Word has length 372 [2025-03-17 14:50:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:50:10,021 INFO L225 Difference]: With dead ends: 751 [2025-03-17 14:50:10,021 INFO L226 Difference]: Without dead ends: 495 [2025-03-17 14:50:10,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 694 SyntacticMatches, 47 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18036 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4354, Invalid=39118, Unknown=0, NotChecked=0, Total=43472 [2025-03-17 14:50:10,029 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 110 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 14:50:10,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 184 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 14:50:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2025-03-17 14:50:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 462. [2025-03-17 14:50:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 445 states have (on average 1.09438202247191) internal successors, (487), 445 states have internal predecessors, (487), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-17 14:50:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 504 transitions. [2025-03-17 14:50:10,069 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 504 transitions. Word has length 372 [2025-03-17 14:50:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:50:10,070 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 504 transitions. [2025-03-17 14:50:10,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 2.0246913580246915) internal successors, (164), 71 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 11 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-17 14:50:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 504 transitions. [2025-03-17 14:50:10,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2025-03-17 14:50:10,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:50:10,071 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 15, 14, 14, 14, 14, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1] [2025-03-17 14:50:10,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 14:50:10,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-17 14:50:10,272 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:50:10,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:50:10,273 INFO L85 PathProgramCache]: Analyzing trace with hash -580261347, now seen corresponding path program 15 times [2025-03-17 14:50:10,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:50:10,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193268671] [2025-03-17 14:50:10,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:50:10,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:50:10,284 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 414 statements into 25 equivalence classes. [2025-03-17 14:50:10,305 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 262 of 414 statements. [2025-03-17 14:50:10,306 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 14:50:10,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 6402 proven. 2903 refuted. 0 times theorem prover too weak. 4390 trivial. 0 not checked. [2025-03-17 14:50:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:50:10,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193268671] [2025-03-17 14:50:10,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193268671] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:50:10,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492615126] [2025-03-17 14:50:10,696 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:50:10,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:10,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:50:10,698 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:50:10,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 14:50:10,984 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 414 statements into 25 equivalence classes. [2025-03-17 14:50:11,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 262 of 414 statements. [2025-03-17 14:50:11,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-17 14:50:11,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:11,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-17 14:50:11,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:50:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 5901 proven. 4105 refuted. 0 times theorem prover too weak. 3689 trivial. 0 not checked. [2025-03-17 14:50:11,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:50:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 5901 proven. 4105 refuted. 0 times theorem prover too weak. 3689 trivial. 0 not checked. [2025-03-17 14:50:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492615126] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:50:12,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:50:12,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 26] total 53 [2025-03-17 14:50:12,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348232322] [2025-03-17 14:50:12,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:50:12,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-03-17 14:50:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:50:12,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-03-17 14:50:12,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2383, Unknown=0, NotChecked=0, Total=2862 [2025-03-17 14:50:12,777 INFO L87 Difference]: Start difference. First operand 462 states and 504 transitions. Second operand has 54 states, 53 states have (on average 2.207547169811321) internal successors, (117), 48 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-17 14:50:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:50:15,076 INFO L93 Difference]: Finished difference Result 1477 states and 1685 transitions. [2025-03-17 14:50:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2025-03-17 14:50:15,077 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.207547169811321) internal successors, (117), 48 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 414 [2025-03-17 14:50:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:50:15,081 INFO L225 Difference]: With dead ends: 1477 [2025-03-17 14:50:15,081 INFO L226 Difference]: Without dead ends: 1184 [2025-03-17 14:50:15,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15265 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=8021, Invalid=30985, Unknown=0, NotChecked=0, Total=39006 [2025-03-17 14:50:15,086 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 14:50:15,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 14:50:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2025-03-17 14:50:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 669. [2025-03-17 14:50:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 647 states have (on average 1.1081916537867078) internal successors, (717), 647 states have internal predecessors, (717), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-17 14:50:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 739 transitions. [2025-03-17 14:50:15,172 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 739 transitions. Word has length 414 [2025-03-17 14:50:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:50:15,172 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 739 transitions. [2025-03-17 14:50:15,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.207547169811321) internal successors, (117), 48 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-17 14:50:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 739 transitions. [2025-03-17 14:50:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2025-03-17 14:50:15,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:50:15,175 INFO L218 NwaCegarLoop]: trace histogram [132, 132, 132, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1] [2025-03-17 14:50:15,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 14:50:15,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:15,375 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:50:15,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:50:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash -613292758, now seen corresponding path program 16 times [2025-03-17 14:50:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:50:15,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079381847] [2025-03-17 14:50:15,376 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:50:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:50:15,388 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 566 statements into 2 equivalence classes. [2025-03-17 14:50:15,578 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 566 of 566 statements. [2025-03-17 14:50:15,578 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:50:15,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 29103 backedges. 16300 proven. 426 refuted. 0 times theorem prover too weak. 12377 trivial. 0 not checked. [2025-03-17 14:50:16,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:50:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079381847] [2025-03-17 14:50:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079381847] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:50:16,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600575840] [2025-03-17 14:50:16,842 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:50:16,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:16,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:50:16,843 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:50:16,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 14:50:17,112 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 566 statements into 2 equivalence classes. [2025-03-17 14:50:17,197 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 566 of 566 statements. [2025-03-17 14:50:17,197 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:50:17,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:17,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-03-17 14:50:17,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:50:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 29103 backedges. 17301 proven. 1477 refuted. 0 times theorem prover too weak. 10325 trivial. 0 not checked. [2025-03-17 14:50:17,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:50:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 29103 backedges. 17301 proven. 1477 refuted. 0 times theorem prover too weak. 10325 trivial. 0 not checked. [2025-03-17 14:50:28,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600575840] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:50:28,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:50:28,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 53, 53] total 70 [2025-03-17 14:50:28,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213269740] [2025-03-17 14:50:28,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:50:28,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-03-17 14:50:28,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:50:28,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-03-17 14:50:28,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=4408, Unknown=0, NotChecked=0, Total=4830 [2025-03-17 14:50:28,967 INFO L87 Difference]: Start difference. First operand 669 states and 739 transitions. Second operand has 70 states, 70 states have (on average 2.257142857142857) internal successors, (158), 59 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-17 14:50:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:50:31,451 INFO L93 Difference]: Finished difference Result 1039 states and 1169 transitions. [2025-03-17 14:50:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2025-03-17 14:50:31,452 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.257142857142857) internal successors, (158), 59 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 566 [2025-03-17 14:50:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:50:31,454 INFO L225 Difference]: With dead ends: 1039 [2025-03-17 14:50:31,454 INFO L226 Difference]: Without dead ends: 576 [2025-03-17 14:50:31,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1052 SyntacticMatches, 51 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13989 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3457, Invalid=31325, Unknown=0, NotChecked=0, Total=34782 [2025-03-17 14:50:31,458 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 3580 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 3589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 14:50:31,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 565 Invalid, 3589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 14:50:31,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-17 14:50:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2025-03-17 14:50:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 557 states have (on average 1.082585278276481) internal successors, (603), 557 states have internal predecessors, (603), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 16 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-17 14:50:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 622 transitions. [2025-03-17 14:50:31,511 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 622 transitions. Word has length 566 [2025-03-17 14:50:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:50:31,512 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 622 transitions. [2025-03-17 14:50:31,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.257142857142857) internal successors, (158), 59 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-17 14:50:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 622 transitions. [2025-03-17 14:50:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2025-03-17 14:50:31,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:50:31,515 INFO L218 NwaCegarLoop]: trace histogram [133, 133, 133, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1] [2025-03-17 14:50:31,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 14:50:31,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:31,715 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:50:31,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:50:31,716 INFO L85 PathProgramCache]: Analyzing trace with hash -872574202, now seen corresponding path program 17 times [2025-03-17 14:50:31,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:50:31,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455806747] [2025-03-17 14:50:31,716 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:50:31,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:50:31,745 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 569 statements into 25 equivalence classes. [2025-03-17 14:50:31,786 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 507 of 569 statements. [2025-03-17 14:50:31,786 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-03-17 14:50:31,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 29514 backedges. 15229 proven. 6908 refuted. 0 times theorem prover too weak. 7377 trivial. 0 not checked. [2025-03-17 14:50:33,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:50:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455806747] [2025-03-17 14:50:33,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455806747] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:50:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008195908] [2025-03-17 14:50:33,534 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:50:33,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:50:33,535 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:50:33,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 14:50:33,922 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 569 statements into 25 equivalence classes. [2025-03-17 14:50:34,013 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) and asserted 507 of 569 statements. [2025-03-17 14:50:34,013 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2025-03-17 14:50:34,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:34,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-03-17 14:50:34,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:50:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 29514 backedges. 15250 proven. 7079 refuted. 0 times theorem prover too weak. 7185 trivial. 0 not checked. [2025-03-17 14:50:34,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:50:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 29514 backedges. 15250 proven. 7079 refuted. 0 times theorem prover too weak. 7185 trivial. 0 not checked. [2025-03-17 14:50:43,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008195908] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:50:43,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:50:43,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 65, 65] total 90 [2025-03-17 14:50:43,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564599191] [2025-03-17 14:50:43,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:50:43,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2025-03-17 14:50:43,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:50:43,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2025-03-17 14:50:43,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=818, Invalid=7192, Unknown=0, NotChecked=0, Total=8010 [2025-03-17 14:50:43,852 INFO L87 Difference]: Start difference. First operand 576 states and 622 transitions. Second operand has 90 states, 90 states have (on average 2.2333333333333334) internal successors, (201), 77 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-17 14:50:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 14:50:48,522 INFO L93 Difference]: Finished difference Result 1138 states and 1249 transitions. [2025-03-17 14:50:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2025-03-17 14:50:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.2333333333333334) internal successors, (201), 77 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 569 [2025-03-17 14:50:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 14:50:48,526 INFO L225 Difference]: With dead ends: 1138 [2025-03-17 14:50:48,526 INFO L226 Difference]: Without dead ends: 801 [2025-03-17 14:50:48,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1424 GetRequests, 1074 SyntacticMatches, 37 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38372 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=11041, Invalid=87869, Unknown=0, NotChecked=0, Total=98910 [2025-03-17 14:50:48,533 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 14:50:48,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 14:50:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2025-03-17 14:50:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 801. [2025-03-17 14:50:48,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 777 states have (on average 1.0772200772200773) internal successors, (837), 777 states have internal predecessors, (837), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-17 14:50:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 861 transitions. [2025-03-17 14:50:48,617 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 861 transitions. Word has length 569 [2025-03-17 14:50:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 14:50:48,618 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 861 transitions. [2025-03-17 14:50:48,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 2.2333333333333334) internal successors, (201), 77 states have internal predecessors, (201), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-17 14:50:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 861 transitions. [2025-03-17 14:50:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2025-03-17 14:50:48,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 14:50:48,623 INFO L218 NwaCegarLoop]: trace histogram [183, 183, 183, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1] [2025-03-17 14:50:48,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 14:50:48,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:48,824 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2025-03-17 14:50:48,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:50:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1295867789, now seen corresponding path program 18 times [2025-03-17 14:50:48,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:50:48,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807687631] [2025-03-17 14:50:48,825 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:50:48,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:50:48,844 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 774 statements into 32 equivalence classes. [2025-03-17 14:50:48,963 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 733 of 774 statements. [2025-03-17 14:50:48,963 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-17 14:50:48,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 55749 backedges. 27292 proven. 9656 refuted. 0 times theorem prover too weak. 18801 trivial. 0 not checked. [2025-03-17 14:50:50,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:50:50,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807687631] [2025-03-17 14:50:50,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807687631] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:50:50,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256894238] [2025-03-17 14:50:50,156 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:50:50,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:50:50,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:50:50,158 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:50:50,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 14:50:50,661 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 774 statements into 32 equivalence classes. [2025-03-17 14:50:50,840 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 733 of 774 statements. [2025-03-17 14:50:50,840 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-17 14:50:50,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:50:50,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-17 14:50:50,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:50:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 55749 backedges. 27292 proven. 9656 refuted. 0 times theorem prover too weak. 18801 trivial. 0 not checked. [2025-03-17 14:50:51,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:50:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 55749 backedges. 27292 proven. 9656 refuted. 0 times theorem prover too weak. 18801 trivial. 0 not checked. [2025-03-17 14:50:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256894238] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:50:54,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:50:54,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2025-03-17 14:50:54,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188078343] [2025-03-17 14:50:54,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:50:54,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-03-17 14:50:54,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:50:54,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-03-17 14:50:54,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=4045, Unknown=0, NotChecked=0, Total=4830 [2025-03-17 14:50:54,611 INFO L87 Difference]: Start difference. First operand 801 states and 861 transitions. Second operand has 70 states, 69 states have (on average 2.130434782608696) internal successors, (147), 62 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9)