./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 10:12:10,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 10:12:10,701 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-19 10:12:10,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 10:12:10,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 10:12:10,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 10:12:10,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 10:12:10,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 10:12:10,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 10:12:10,732 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 10:12:10,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 10:12:10,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 10:12:10,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 10:12:10,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 10:12:10,735 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 10:12:10,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 10:12:10,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 10:12:10,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 10:12:10,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 10:12:10,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 10:12:10,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 10:12:10,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 10:12:10,739 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 10:12:10,739 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 10:12:10,739 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 10:12:10,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 10:12:10,740 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 10:12:10,740 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 10:12:10,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 10:12:10,740 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 10:12:10,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 10:12:10,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 10:12:10,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 10:12:10,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 10:12:10,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 10:12:10,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 10:12:10,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 10:12:10,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 10:12:10,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 10:12:10,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 10:12:10,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 10:12:10,743 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2024-11-19 10:12:10,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 10:12:10,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 10:12:10,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 10:12:10,960 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 10:12:10,961 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 10:12:10,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter3.c [2024-11-19 10:12:12,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 10:12:12,440 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 10:12:12,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter3.c [2024-11-19 10:12:12,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afa662acc/a636ac7670774825ba750e60d8a04017/FLAG3ac766633 [2024-11-19 10:12:12,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afa662acc/a636ac7670774825ba750e60d8a04017 [2024-11-19 10:12:12,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 10:12:12,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 10:12:12,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 10:12:12,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 10:12:12,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 10:12:12,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18554419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12, skipping insertion in model container [2024-11-19 10:12:12,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 10:12:12,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 10:12:12,661 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 10:12:12,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 10:12:12,688 INFO L204 MainTranslator]: Completed translation [2024-11-19 10:12:12,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12 WrapperNode [2024-11-19 10:12:12,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 10:12:12,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 10:12:12,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 10:12:12,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 10:12:12,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,715 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2024-11-19 10:12:12,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 10:12:12,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 10:12:12,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 10:12:12,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 10:12:12,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,730 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-19 10:12:12,730 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,730 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 10:12:12,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 10:12:12,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 10:12:12,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 10:12:12,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (1/1) ... [2024-11-19 10:12:12,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 10:12:12,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:12,800 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) [2024-11-19 10:12:12,804 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 [2024-11-19 10:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2024-11-19 10:12:12,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2024-11-19 10:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 10:12:12,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 10:12:12,891 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 10:12:12,893 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 10:12:13,041 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-19 10:12:13,041 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 10:12:13,093 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 10:12:13,093 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 10:12:13,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:12:13 BoogieIcfgContainer [2024-11-19 10:12:13,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 10:12:13,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 10:12:13,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 10:12:13,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 10:12:13,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:12:12" (1/3) ... [2024-11-19 10:12:13,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33164400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:12:13, skipping insertion in model container [2024-11-19 10:12:13,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:12:12" (2/3) ... [2024-11-19 10:12:13,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33164400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:12:13, skipping insertion in model container [2024-11-19 10:12:13,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:12:13" (3/3) ... [2024-11-19 10:12:13,109 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2024-11-19 10:12:13,123 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 10:12:13,123 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 10:12:13,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 10:12:13,187 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;@6cd3f302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 10:12:13,187 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 10:12:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 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) [2024-11-19 10:12:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 10:12:13,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:13,199 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:13,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:13,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:13,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1089293515, now seen corresponding path program 1 times [2024-11-19 10:12:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:13,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525639482] [2024-11-19 10:12:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 10:12:13,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:13,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525639482] [2024-11-19 10:12:13,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525639482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 10:12:13,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 10:12:13,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 10:12:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940103883] [2024-11-19 10:12:13,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 10:12:13,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 10:12:13,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:13,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 10:12:13,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 10:12:13,416 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 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 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 10:12:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:13,511 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2024-11-19 10:12:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 10:12:13,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 10:12:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:13,519 INFO L225 Difference]: With dead ends: 65 [2024-11-19 10:12:13,519 INFO L226 Difference]: Without dead ends: 39 [2024-11-19 10:12:13,521 INFO L431 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 [2024-11-19 10:12:13,524 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:13,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 100 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-19 10:12:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2024-11-19 10:12:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 29 states have internal predecessors, (37), 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) [2024-11-19 10:12:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-19 10:12:13,555 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2024-11-19 10:12:13,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:13,556 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-19 10:12:13,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 10:12:13,556 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-19 10:12:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 10:12:13,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:13,556 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:13,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 10:12:13,557 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:13,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash -591639365, now seen corresponding path program 1 times [2024-11-19 10:12:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891621926] [2024-11-19 10:12:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 10:12:13,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:13,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891621926] [2024-11-19 10:12:13,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891621926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 10:12:13,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 10:12:13,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 10:12:13,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32910373] [2024-11-19 10:12:13,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 10:12:13,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 10:12:13,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 10:12:13,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 10:12:13,606 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 10:12:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:13,645 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-11-19 10:12:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 10:12:13,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-19 10:12:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:13,647 INFO L225 Difference]: With dead ends: 36 [2024-11-19 10:12:13,647 INFO L226 Difference]: Without dead ends: 35 [2024-11-19 10:12:13,647 INFO L431 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 [2024-11-19 10:12:13,648 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 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 [2024-11-19 10:12:13,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 10:12:13,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-19 10:12:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2024-11-19 10:12:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 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) [2024-11-19 10:12:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-11-19 10:12:13,662 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2024-11-19 10:12:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:13,662 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-11-19 10:12:13,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 10:12:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-19 10:12:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 10:12:13,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:13,664 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:13,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 10:12:13,664 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:13,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:13,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1479083013, now seen corresponding path program 1 times [2024-11-19 10:12:13,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:13,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507826936] [2024-11-19 10:12:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:13,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 10:12:13,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507826936] [2024-11-19 10:12:13,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507826936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893480611] [2024-11-19 10:12:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:13,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:13,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:13,769 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) [2024-11-19 10:12:13,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 10:12:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:13,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 10:12:13,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 10:12:13,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 10:12:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893480611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:13,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-19 10:12:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246788199] [2024-11-19 10:12:13,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:13,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 10:12:13,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 10:12:13,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-19 10:12:13,935 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2024-11-19 10:12:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:14,018 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-19 10:12:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 10:12:14,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 12 [2024-11-19 10:12:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:14,019 INFO L225 Difference]: With dead ends: 39 [2024-11-19 10:12:14,020 INFO L226 Difference]: Without dead ends: 38 [2024-11-19 10:12:14,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-19 10:12:14,025 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 115 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:14,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 64 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 10:12:14,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-19 10:12:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2024-11-19 10:12:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) 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) [2024-11-19 10:12:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-19 10:12:14,040 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2024-11-19 10:12:14,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:14,040 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-19 10:12:14,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2024-11-19 10:12:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-19 10:12:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 10:12:14,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:14,041 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:14,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 10:12:14,242 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 [2024-11-19 10:12:14,242 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:14,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454171, now seen corresponding path program 1 times [2024-11-19 10:12:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661399628] [2024-11-19 10:12:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:14,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 10:12:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:14,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661399628] [2024-11-19 10:12:14,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661399628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 10:12:14,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 10:12:14,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 10:12:14,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497168736] [2024-11-19 10:12:14,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 10:12:14,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 10:12:14,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 10:12:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 10:12:14,279 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2024-11-19 10:12:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:14,292 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2024-11-19 10:12:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 10:12:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 [2024-11-19 10:12:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:14,293 INFO L225 Difference]: With dead ends: 32 [2024-11-19 10:12:14,293 INFO L226 Difference]: Without dead ends: 31 [2024-11-19 10:12:14,293 INFO L431 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 [2024-11-19 10:12:14,294 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 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 [2024-11-19 10:12:14,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 10:12:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-19 10:12:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-19 10:12:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 26 states have internal predecessors, (32), 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) [2024-11-19 10:12:14,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-19 10:12:14,303 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2024-11-19 10:12:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:14,303 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-19 10:12:14,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2024-11-19 10:12:14,303 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-19 10:12:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 10:12:14,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:14,304 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:14,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 10:12:14,304 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:14,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:14,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454226, now seen corresponding path program 1 times [2024-11-19 10:12:14,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:14,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997031683] [2024-11-19 10:12:14,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:14,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 10:12:14,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997031683] [2024-11-19 10:12:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997031683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 10:12:14,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 10:12:14,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 10:12:14,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930137486] [2024-11-19 10:12:14,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 10:12:14,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 10:12:14,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 10:12:14,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 10:12:14,355 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2024-11-19 10:12:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:14,365 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2024-11-19 10:12:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 10:12:14,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 [2024-11-19 10:12:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:14,366 INFO L225 Difference]: With dead ends: 31 [2024-11-19 10:12:14,367 INFO L226 Difference]: Without dead ends: 30 [2024-11-19 10:12:14,368 INFO L431 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 [2024-11-19 10:12:14,368 INFO L432 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 [2024-11-19 10:12:14,370 INFO L433 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] [2024-11-19 10:12:14,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-19 10:12:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-19 10:12:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 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) [2024-11-19 10:12:14,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-19 10:12:14,376 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2024-11-19 10:12:14,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:14,377 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-19 10:12:14,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2024-11-19 10:12:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-19 10:12:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 10:12:14,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:14,378 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:14,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 10:12:14,379 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:14,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 805406401, now seen corresponding path program 1 times [2024-11-19 10:12:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:14,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499287687] [2024-11-19 10:12:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:14,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 10:12:14,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:14,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499287687] [2024-11-19 10:12:14,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499287687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 10:12:14,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 10:12:14,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 10:12:14,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244375146] [2024-11-19 10:12:14,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 10:12:14,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 10:12:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 10:12:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 10:12:14,427 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-19 10:12:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:14,448 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2024-11-19 10:12:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 10:12:14,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2024-11-19 10:12:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:14,449 INFO L225 Difference]: With dead ends: 37 [2024-11-19 10:12:14,451 INFO L226 Difference]: Without dead ends: 34 [2024-11-19 10:12:14,451 INFO L431 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 [2024-11-19 10:12:14,452 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 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 [2024-11-19 10:12:14,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 10:12:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-19 10:12:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-19 10:12:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 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) [2024-11-19 10:12:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-19 10:12:14,459 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2024-11-19 10:12:14,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:14,459 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-19 10:12:14,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-19 10:12:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-19 10:12:14,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 10:12:14,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:14,460 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:14,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 10:12:14,461 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:14,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:14,461 INFO L85 PathProgramCache]: Analyzing trace with hash 805408099, now seen corresponding path program 1 times [2024-11-19 10:12:14,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:14,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079677630] [2024-11-19 10:12:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:14,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 10:12:14,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:14,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079677630] [2024-11-19 10:12:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079677630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 10:12:14,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 10:12:14,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 10:12:14,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067161303] [2024-11-19 10:12:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 10:12:14,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 10:12:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 10:12:14,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 10:12:14,521 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-19 10:12:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:14,539 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2024-11-19 10:12:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 10:12:14,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2024-11-19 10:12:14,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:14,542 INFO L225 Difference]: With dead ends: 60 [2024-11-19 10:12:14,542 INFO L226 Difference]: Without dead ends: 38 [2024-11-19 10:12:14,543 INFO L431 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 [2024-11-19 10:12:14,543 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 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 [2024-11-19 10:12:14,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 10:12:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-19 10:12:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-19 10:12:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 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) [2024-11-19 10:12:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-19 10:12:14,552 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2024-11-19 10:12:14,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:14,552 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-19 10:12:14,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-19 10:12:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-19 10:12:14,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 10:12:14,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:14,553 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:14,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 10:12:14,554 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:14,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash 842415392, now seen corresponding path program 1 times [2024-11-19 10:12:14,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:14,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586110908] [2024-11-19 10:12:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:14,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 10:12:14,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:14,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586110908] [2024-11-19 10:12:14,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586110908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:14,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244703127] [2024-11-19 10:12:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:14,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:14,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:14,714 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) [2024-11-19 10:12:14,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 10:12:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:14,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 10:12:14,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 10:12:14,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 10:12:14,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244703127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 10:12:14,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 10:12:14,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-19 10:12:14,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123477012] [2024-11-19 10:12:14,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 10:12:14,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 10:12:14,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:14,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 10:12:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-19 10:12:14,816 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-11-19 10:12:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:14,836 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2024-11-19 10:12:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 10:12:14,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 28 [2024-11-19 10:12:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:14,837 INFO L225 Difference]: With dead ends: 38 [2024-11-19 10:12:14,837 INFO L226 Difference]: Without dead ends: 37 [2024-11-19 10:12:14,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-19 10:12:14,838 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 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 [2024-11-19 10:12:14,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 10:12:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-19 10:12:14,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-19 10:12:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 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) [2024-11-19 10:12:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-19 10:12:14,842 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2024-11-19 10:12:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:14,843 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-19 10:12:14,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2024-11-19 10:12:14,843 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-19 10:12:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 10:12:14,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:14,844 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:14,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 10:12:15,044 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 [2024-11-19 10:12:15,044 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:15,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 903079569, now seen corresponding path program 1 times [2024-11-19 10:12:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157207329] [2024-11-19 10:12:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 10:12:15,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:15,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157207329] [2024-11-19 10:12:15,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157207329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:15,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904101201] [2024-11-19 10:12:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 10:12:15,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:15,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:15,090 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) [2024-11-19 10:12:15,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 10:12:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:15,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 10:12:15,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 10:12:15,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 10:12:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904101201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:15,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:15,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2024-11-19 10:12:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433235986] [2024-11-19 10:12:15,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:15,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 10:12:15,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 10:12:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-19 10:12:15,343 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 10:12:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:15,526 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2024-11-19 10:12:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 10:12:15,526 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 31 [2024-11-19 10:12:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:15,528 INFO L225 Difference]: With dead ends: 110 [2024-11-19 10:12:15,528 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 10:12:15,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-11-19 10:12:15,529 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:15,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 10:12:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2024-11-19 10:12:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 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) [2024-11-19 10:12:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2024-11-19 10:12:15,543 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 31 [2024-11-19 10:12:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:15,544 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2024-11-19 10:12:15,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 10:12:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2024-11-19 10:12:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-19 10:12:15,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:15,545 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:15,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 10:12:15,746 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 [2024-11-19 10:12:15,747 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:15,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash 801873460, now seen corresponding path program 2 times [2024-11-19 10:12:15,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:15,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153859923] [2024-11-19 10:12:15,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 10:12:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:15,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 10:12:15,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-19 10:12:16,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153859923] [2024-11-19 10:12:16,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153859923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228858923] [2024-11-19 10:12:16,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 10:12:16,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:16,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:16,103 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) [2024-11-19 10:12:16,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 10:12:16,158 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 10:12:16,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:16,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 10:12:16,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-19 10:12:16,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-19 10:12:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228858923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:16,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:16,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2024-11-19 10:12:16,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676795707] [2024-11-19 10:12:16,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:16,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 10:12:16,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:16,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 10:12:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-19 10:12:16,978 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 10:12:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:17,093 INFO L93 Difference]: Finished difference Result 143 states and 173 transitions. [2024-11-19 10:12:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 10:12:17,093 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2024-11-19 10:12:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:17,094 INFO L225 Difference]: With dead ends: 143 [2024-11-19 10:12:17,094 INFO L226 Difference]: Without dead ends: 85 [2024-11-19 10:12:17,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 166 SyntacticMatches, 16 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-19 10:12:17,095 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:17,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-19 10:12:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-19 10:12:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 76 states have internal predecessors, (83), 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) [2024-11-19 10:12:17,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2024-11-19 10:12:17,108 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 92 [2024-11-19 10:12:17,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:17,109 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2024-11-19 10:12:17,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 10:12:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2024-11-19 10:12:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-19 10:12:17,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:17,111 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:17,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 10:12:17,311 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 [2024-11-19 10:12:17,312 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:17,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1485258322, now seen corresponding path program 3 times [2024-11-19 10:12:17,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:17,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946149899] [2024-11-19 10:12:17,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 10:12:17,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:17,324 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 10:12:17,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-19 10:12:17,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:17,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946149899] [2024-11-19 10:12:17,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946149899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:17,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978179076] [2024-11-19 10:12:17,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 10:12:17,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:17,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:17,423 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) [2024-11-19 10:12:17,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 10:12:17,466 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 10:12:17,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:17,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 10:12:17,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-19 10:12:17,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 84 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-19 10:12:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978179076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:17,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-19 10:12:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440060666] [2024-11-19 10:12:17,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:17,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 10:12:17,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 10:12:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-19 10:12:17,653 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 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) [2024-11-19 10:12:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:17,717 INFO L93 Difference]: Finished difference Result 175 states and 206 transitions. [2024-11-19 10:12:17,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 10:12:17,718 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 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 88 [2024-11-19 10:12:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:17,720 INFO L225 Difference]: With dead ends: 175 [2024-11-19 10:12:17,721 INFO L226 Difference]: Without dead ends: 170 [2024-11-19 10:12:17,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-19 10:12:17,725 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:17,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 10:12:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-19 10:12:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 109. [2024-11-19 10:12:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 100 states have (on average 1.11) internal successors, (111), 100 states have internal predecessors, (111), 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) [2024-11-19 10:12:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2024-11-19 10:12:17,747 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 88 [2024-11-19 10:12:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:17,748 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2024-11-19 10:12:17,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 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) [2024-11-19 10:12:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2024-11-19 10:12:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 10:12:17,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:17,753 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:17,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 10:12:17,954 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 [2024-11-19 10:12:17,955 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:17,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:17,955 INFO L85 PathProgramCache]: Analyzing trace with hash 369482670, now seen corresponding path program 4 times [2024-11-19 10:12:17,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:17,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975368044] [2024-11-19 10:12:17,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 10:12:17,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:17,992 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 10:12:17,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 197 proven. 143 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-19 10:12:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975368044] [2024-11-19 10:12:18,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975368044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:18,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181393857] [2024-11-19 10:12:18,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 10:12:18,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:18,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:18,619 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) [2024-11-19 10:12:18,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 10:12:18,685 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 10:12:18,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:18,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 10:12:18,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-19 10:12:18,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-19 10:12:19,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181393857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:19,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:19,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16, 16] total 52 [2024-11-19 10:12:19,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74928184] [2024-11-19 10:12:19,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:19,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 10:12:19,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:19,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 10:12:19,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=2353, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 10:12:19,887 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 52 states, 52 states have (on average 2.480769230769231) internal successors, (129), 42 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-19 10:12:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:20,585 INFO L93 Difference]: Finished difference Result 498 states and 562 transitions. [2024-11-19 10:12:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-19 10:12:20,586 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.480769230769231) internal successors, (129), 42 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 110 [2024-11-19 10:12:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:20,589 INFO L225 Difference]: With dead ends: 498 [2024-11-19 10:12:20,589 INFO L226 Difference]: Without dead ends: 274 [2024-11-19 10:12:20,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1171, Invalid=8729, Unknown=0, NotChecked=0, Total=9900 [2024-11-19 10:12:20,594 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:20,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 202 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-19 10:12:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 202. [2024-11-19 10:12:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 187 states have (on average 1.0748663101604279) internal successors, (201), 187 states have internal predecessors, (201), 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) [2024-11-19 10:12:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 216 transitions. [2024-11-19 10:12:20,612 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 216 transitions. Word has length 110 [2024-11-19 10:12:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:20,613 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 216 transitions. [2024-11-19 10:12:20,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.480769230769231) internal successors, (129), 42 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-19 10:12:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 216 transitions. [2024-11-19 10:12:20,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-19 10:12:20,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:20,617 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:20,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 10:12:20,817 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 [2024-11-19 10:12:20,817 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:20,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1281574126, now seen corresponding path program 5 times [2024-11-19 10:12:20,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:20,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018285891] [2024-11-19 10:12:20,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 10:12:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:20,841 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-19 10:12:20,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1041 proven. 53 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2024-11-19 10:12:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018285891] [2024-11-19 10:12:21,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018285891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:21,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962072036] [2024-11-19 10:12:21,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 10:12:21,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:21,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:21,024 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) [2024-11-19 10:12:21,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 10:12:21,112 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-19 10:12:21,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:21,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 10:12:21,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1025 proven. 88 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2024-11-19 10:12:21,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1043 proven. 70 refuted. 0 times theorem prover too weak. 1369 trivial. 0 not checked. [2024-11-19 10:12:22,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962072036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:22,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:22,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 23 [2024-11-19 10:12:22,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133605246] [2024-11-19 10:12:22,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:22,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 10:12:22,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:22,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 10:12:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-19 10:12:22,143 INFO L87 Difference]: Start difference. First operand 202 states and 216 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 21 states have internal predecessors, (64), 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) [2024-11-19 10:12:22,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:22,391 INFO L93 Difference]: Finished difference Result 347 states and 378 transitions. [2024-11-19 10:12:22,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 10:12:22,391 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 21 states have internal predecessors, (64), 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 230 [2024-11-19 10:12:22,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:22,392 INFO L225 Difference]: With dead ends: 347 [2024-11-19 10:12:22,393 INFO L226 Difference]: Without dead ends: 217 [2024-11-19 10:12:22,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 441 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=1094, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 10:12:22,394 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:22,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:22,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-19 10:12:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-11-19 10:12:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 202 states have (on average 1.0594059405940595) internal successors, (214), 202 states have internal predecessors, (214), 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) [2024-11-19 10:12:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 229 transitions. [2024-11-19 10:12:22,405 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 229 transitions. Word has length 230 [2024-11-19 10:12:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:22,406 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 229 transitions. [2024-11-19 10:12:22,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 21 states have internal predecessors, (64), 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) [2024-11-19 10:12:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 229 transitions. [2024-11-19 10:12:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-19 10:12:22,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:22,408 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:22,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 10:12:22,611 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 [2024-11-19 10:12:22,612 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:22,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:22,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1037813284, now seen corresponding path program 6 times [2024-11-19 10:12:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:22,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416945945] [2024-11-19 10:12:22,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 10:12:22,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:22,650 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-19 10:12:22,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 1093 proven. 120 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2024-11-19 10:12:22,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416945945] [2024-11-19 10:12:22,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416945945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623709584] [2024-11-19 10:12:22,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 10:12:22,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:22,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:22,939 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) [2024-11-19 10:12:22,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 10:12:23,032 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-19 10:12:23,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:23,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 10:12:23,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 1093 proven. 120 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2024-11-19 10:12:23,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 1093 proven. 120 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2024-11-19 10:12:23,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623709584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:23,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:23,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2024-11-19 10:12:23,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375854943] [2024-11-19 10:12:23,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:23,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 10:12:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:23,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 10:12:23,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2024-11-19 10:12:23,663 INFO L87 Difference]: Start difference. First operand 217 states and 229 transitions. Second operand has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 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) [2024-11-19 10:12:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:24,099 INFO L93 Difference]: Finished difference Result 614 states and 695 transitions. [2024-11-19 10:12:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-19 10:12:24,100 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 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 248 [2024-11-19 10:12:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:24,102 INFO L225 Difference]: With dead ends: 614 [2024-11-19 10:12:24,102 INFO L226 Difference]: Without dead ends: 555 [2024-11-19 10:12:24,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=676, Invalid=2404, Unknown=0, NotChecked=0, Total=3080 [2024-11-19 10:12:24,103 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:24,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-19 10:12:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 247. [2024-11-19 10:12:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 232 states have (on average 1.0862068965517242) internal successors, (252), 232 states have internal predecessors, (252), 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) [2024-11-19 10:12:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 267 transitions. [2024-11-19 10:12:24,120 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 267 transitions. Word has length 248 [2024-11-19 10:12:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:24,120 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 267 transitions. [2024-11-19 10:12:24,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 28 states have internal predecessors, (68), 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) [2024-11-19 10:12:24,121 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 267 transitions. [2024-11-19 10:12:24,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-19 10:12:24,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:24,123 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:24,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 10:12:24,326 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 [2024-11-19 10:12:24,327 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:24,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1046145730, now seen corresponding path program 7 times [2024-11-19 10:12:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456072173] [2024-11-19 10:12:24,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 10:12:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4211 backedges. 2388 proven. 90 refuted. 0 times theorem prover too weak. 1733 trivial. 0 not checked. [2024-11-19 10:12:24,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456072173] [2024-11-19 10:12:24,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456072173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152098670] [2024-11-19 10:12:24,839 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 10:12:24,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:24,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:24,840 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) [2024-11-19 10:12:24,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 10:12:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:24,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 10:12:24,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4211 backedges. 1958 proven. 177 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2024-11-19 10:12:25,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4211 backedges. 1958 proven. 177 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2024-11-19 10:12:28,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152098670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:28,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:28,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 28] total 37 [2024-11-19 10:12:28,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185435124] [2024-11-19 10:12:28,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:28,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-19 10:12:28,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:28,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-19 10:12:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 10:12:28,167 INFO L87 Difference]: Start difference. First operand 247 states and 267 transitions. Second operand has 37 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 31 states have internal predecessors, (93), 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) [2024-11-19 10:12:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:28,729 INFO L93 Difference]: Finished difference Result 413 states and 454 transitions. [2024-11-19 10:12:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-19 10:12:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 31 states have internal predecessors, (93), 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 [2024-11-19 10:12:28,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:28,731 INFO L225 Difference]: With dead ends: 413 [2024-11-19 10:12:28,731 INFO L226 Difference]: Without dead ends: 256 [2024-11-19 10:12:28,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 502 SyntacticMatches, 26 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1975 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=512, Invalid=3910, Unknown=0, NotChecked=0, Total=4422 [2024-11-19 10:12:28,733 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:28,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 294 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 10:12:28,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-19 10:12:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-19 10:12:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 241 states have (on average 1.070539419087137) internal successors, (258), 241 states have internal predecessors, (258), 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) [2024-11-19 10:12:28,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 273 transitions. [2024-11-19 10:12:28,747 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 273 transitions. Word has length 272 [2024-11-19 10:12:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:28,748 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 273 transitions. [2024-11-19 10:12:28,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 31 states have internal predecessors, (93), 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) [2024-11-19 10:12:28,748 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 273 transitions. [2024-11-19 10:12:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-19 10:12:28,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:28,750 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:28,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 10:12:28,950 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 [2024-11-19 10:12:28,951 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:28,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash 875739105, now seen corresponding path program 8 times [2024-11-19 10:12:28,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:28,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836625170] [2024-11-19 10:12:28,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 10:12:28,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:28,990 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 10:12:28,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4539 backedges. 2742 proven. 138 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2024-11-19 10:12:29,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836625170] [2024-11-19 10:12:29,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836625170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76896631] [2024-11-19 10:12:29,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 10:12:29,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:29,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:29,479 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) [2024-11-19 10:12:29,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 10:12:29,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 10:12:29,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:29,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 10:12:29,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4539 backedges. 2566 proven. 311 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2024-11-19 10:12:29,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4539 backedges. 2566 proven. 311 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2024-11-19 10:12:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76896631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:33,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:33,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2024-11-19 10:12:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838459446] [2024-11-19 10:12:33,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:33,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 10:12:33,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 10:12:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 10:12:33,861 INFO L87 Difference]: Start difference. First operand 256 states and 273 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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) [2024-11-19 10:12:34,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:34,710 INFO L93 Difference]: Finished difference Result 407 states and 441 transitions. [2024-11-19 10:12:34,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-19 10:12:34,710 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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 271 [2024-11-19 10:12:34,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:34,712 INFO L225 Difference]: With dead ends: 407 [2024-11-19 10:12:34,712 INFO L226 Difference]: Without dead ends: 265 [2024-11-19 10:12:34,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 492 SyntacticMatches, 31 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3327 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=823, Invalid=6659, Unknown=0, NotChecked=0, Total=7482 [2024-11-19 10:12:34,714 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:34,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 10:12:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-19 10:12:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-11-19 10:12:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 250 states have (on average 1.06) internal successors, (265), 250 states have internal predecessors, (265), 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) [2024-11-19 10:12:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 280 transitions. [2024-11-19 10:12:34,729 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 280 transitions. Word has length 271 [2024-11-19 10:12:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:34,730 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 280 transitions. [2024-11-19 10:12:34,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 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) [2024-11-19 10:12:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 280 transitions. [2024-11-19 10:12:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-19 10:12:34,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:34,733 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:34,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 10:12:34,937 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 [2024-11-19 10:12:34,937 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:34,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash -622580716, now seen corresponding path program 9 times [2024-11-19 10:12:34,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:34,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134474742] [2024-11-19 10:12:34,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 10:12:34,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:34,966 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-19 10:12:34,967 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5013 backedges. 2343 proven. 678 refuted. 0 times theorem prover too weak. 1992 trivial. 0 not checked. [2024-11-19 10:12:35,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:35,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134474742] [2024-11-19 10:12:35,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134474742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:35,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646688822] [2024-11-19 10:12:35,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 10:12:35,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:35,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:35,372 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) [2024-11-19 10:12:35,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 10:12:35,600 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-19 10:12:35,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:35,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 10:12:35,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5013 backedges. 2343 proven. 678 refuted. 0 times theorem prover too weak. 1992 trivial. 0 not checked. [2024-11-19 10:12:35,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5013 backedges. 2343 proven. 678 refuted. 0 times theorem prover too weak. 1992 trivial. 0 not checked. [2024-11-19 10:12:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646688822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:36,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:36,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2024-11-19 10:12:36,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279210643] [2024-11-19 10:12:36,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:36,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 10:12:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 10:12:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1545, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 10:12:36,819 INFO L87 Difference]: Start difference. First operand 265 states and 280 transitions. Second operand has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 40 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 10:12:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:38,217 INFO L93 Difference]: Finished difference Result 947 states and 1070 transitions. [2024-11-19 10:12:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-19 10:12:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 40 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 280 [2024-11-19 10:12:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:38,222 INFO L225 Difference]: With dead ends: 947 [2024-11-19 10:12:38,222 INFO L226 Difference]: Without dead ends: 827 [2024-11-19 10:12:38,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4731 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2981, Invalid=11299, Unknown=0, NotChecked=0, Total=14280 [2024-11-19 10:12:38,227 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:38,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-19 10:12:38,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 328. [2024-11-19 10:12:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 313 states have (on average 1.1022364217252396) internal successors, (345), 313 states have internal predecessors, (345), 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) [2024-11-19 10:12:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 360 transitions. [2024-11-19 10:12:38,271 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 360 transitions. Word has length 280 [2024-11-19 10:12:38,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:38,272 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 360 transitions. [2024-11-19 10:12:38,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 40 states have internal predecessors, (96), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-19 10:12:38,272 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 360 transitions. [2024-11-19 10:12:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-19 10:12:38,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:38,274 INFO L215 NwaCegarLoop]: trace histogram [68, 68, 68, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:38,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 10:12:38,476 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 [2024-11-19 10:12:38,476 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:38,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:38,477 INFO L85 PathProgramCache]: Analyzing trace with hash 423325153, now seen corresponding path program 10 times [2024-11-19 10:12:38,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:38,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402920417] [2024-11-19 10:12:38,477 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 10:12:38,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:38,572 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 10:12:38,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8209 backedges. 2360 proven. 247 refuted. 0 times theorem prover too weak. 5602 trivial. 0 not checked. [2024-11-19 10:12:39,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402920417] [2024-11-19 10:12:39,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402920417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:39,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427221715] [2024-11-19 10:12:39,420 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 10:12:39,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:39,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:39,422 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) [2024-11-19 10:12:39,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 10:12:39,651 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 10:12:39,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:39,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 10:12:39,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8209 backedges. 2360 proven. 247 refuted. 0 times theorem prover too weak. 5602 trivial. 0 not checked. [2024-11-19 10:12:39,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 8209 backedges. 2360 proven. 247 refuted. 0 times theorem prover too weak. 5602 trivial. 0 not checked. [2024-11-19 10:12:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427221715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:40,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:40,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 59 [2024-11-19 10:12:40,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369190327] [2024-11-19 10:12:40,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:40,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-19 10:12:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-19 10:12:40,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2024-11-19 10:12:40,579 INFO L87 Difference]: Start difference. First operand 328 states and 360 transitions. Second operand has 60 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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) [2024-11-19 10:12:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:40,775 INFO L93 Difference]: Finished difference Result 711 states and 862 transitions. [2024-11-19 10:12:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 10:12:40,776 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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 331 [2024-11-19 10:12:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:40,781 INFO L225 Difference]: With dead ends: 711 [2024-11-19 10:12:40,781 INFO L226 Difference]: Without dead ends: 706 [2024-11-19 10:12:40,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2024-11-19 10:12:40,784 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:40,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-19 10:12:40,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 412. [2024-11-19 10:12:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 397 states have (on average 1.1158690176322419) internal successors, (443), 397 states have internal predecessors, (443), 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) [2024-11-19 10:12:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 458 transitions. [2024-11-19 10:12:40,826 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 458 transitions. Word has length 331 [2024-11-19 10:12:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:40,827 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 458 transitions. [2024-11-19 10:12:40,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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) [2024-11-19 10:12:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 458 transitions. [2024-11-19 10:12:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-19 10:12:40,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:40,829 INFO L215 NwaCegarLoop]: trace histogram [82, 82, 82, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:40,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 10:12:41,030 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 [2024-11-19 10:12:41,030 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:41,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1529004031, now seen corresponding path program 11 times [2024-11-19 10:12:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:41,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159546093] [2024-11-19 10:12:41,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 10:12:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:41,076 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-19 10:12:41,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11492 backedges. 4871 proven. 444 refuted. 0 times theorem prover too weak. 6177 trivial. 0 not checked. [2024-11-19 10:12:41,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:41,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159546093] [2024-11-19 10:12:41,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159546093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:41,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66982914] [2024-11-19 10:12:41,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 10:12:41,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:41,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:41,603 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) [2024-11-19 10:12:41,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 10:12:41,820 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2024-11-19 10:12:41,820 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:41,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 10:12:41,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11492 backedges. 4644 proven. 696 refuted. 0 times theorem prover too weak. 6152 trivial. 0 not checked. [2024-11-19 10:12:41,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11492 backedges. 4644 proven. 696 refuted. 0 times theorem prover too weak. 6152 trivial. 0 not checked. [2024-11-19 10:12:44,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66982914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:44,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:44,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 33, 33] total 40 [2024-11-19 10:12:44,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685599076] [2024-11-19 10:12:44,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:44,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-19 10:12:44,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:44,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-19 10:12:44,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 10:12:44,487 INFO L87 Difference]: Start difference. First operand 412 states and 458 transitions. Second operand has 40 states, 40 states have (on average 2.425) internal successors, (97), 35 states have internal predecessors, (97), 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) [2024-11-19 10:12:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:45,108 INFO L93 Difference]: Finished difference Result 758 states and 850 transitions. [2024-11-19 10:12:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-19 10:12:45,109 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.425) internal successors, (97), 35 states have internal predecessors, (97), 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 373 [2024-11-19 10:12:45,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:45,111 INFO L225 Difference]: With dead ends: 758 [2024-11-19 10:12:45,111 INFO L226 Difference]: Without dead ends: 436 [2024-11-19 10:12:45,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 710 SyntacticMatches, 27 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2352 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=735, Invalid=5427, Unknown=0, NotChecked=0, Total=6162 [2024-11-19 10:12:45,113 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:45,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-19 10:12:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2024-11-19 10:12:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 420 states have (on average 1.1071428571428572) internal successors, (465), 420 states have internal predecessors, (465), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 13 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-19 10:12:45,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 481 transitions. [2024-11-19 10:12:45,147 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 481 transitions. Word has length 373 [2024-11-19 10:12:45,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:45,148 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 481 transitions. [2024-11-19 10:12:45,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.425) internal successors, (97), 35 states have internal predecessors, (97), 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) [2024-11-19 10:12:45,148 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 481 transitions. [2024-11-19 10:12:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-11-19 10:12:45,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:45,150 INFO L215 NwaCegarLoop]: trace histogram [88, 88, 88, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:45,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 10:12:45,354 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 [2024-11-19 10:12:45,355 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:45,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:45,355 INFO L85 PathProgramCache]: Analyzing trace with hash 153888760, now seen corresponding path program 12 times [2024-11-19 10:12:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:45,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518872696] [2024-11-19 10:12:45,356 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 10:12:45,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:45,389 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-19 10:12:45,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13290 backedges. 5809 proven. 4003 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2024-11-19 10:12:45,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:45,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518872696] [2024-11-19 10:12:45,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518872696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:45,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389459627] [2024-11-19 10:12:45,853 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 10:12:45,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:45,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:45,855 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) [2024-11-19 10:12:45,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 10:12:46,130 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2024-11-19 10:12:46,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:12:46,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-19 10:12:46,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13290 backedges. 5809 proven. 4003 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2024-11-19 10:12:46,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13290 backedges. 5809 proven. 4003 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2024-11-19 10:12:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389459627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:47,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:47,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-19 10:12:47,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125905275] [2024-11-19 10:12:47,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:47,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 10:12:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:47,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 10:12:47,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=2207, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 10:12:47,994 INFO L87 Difference]: Start difference. First operand 436 states and 481 transitions. Second operand has 52 states, 51 states have (on average 2.235294117647059) internal successors, (114), 46 states have internal predecessors, (114), 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) [2024-11-19 10:12:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:12:50,467 INFO L93 Difference]: Finished difference Result 1465 states and 1668 transitions. [2024-11-19 10:12:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2024-11-19 10:12:50,467 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.235294117647059) internal successors, (114), 46 states have internal predecessors, (114), 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 402 [2024-11-19 10:12:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:12:50,475 INFO L225 Difference]: With dead ends: 1465 [2024-11-19 10:12:50,478 INFO L226 Difference]: Without dead ends: 1124 [2024-11-19 10:12:50,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12686 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6997, Invalid=26675, Unknown=0, NotChecked=0, Total=33672 [2024-11-19 10:12:50,485 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:12:50,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:12:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-19 10:12:50,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 535. [2024-11-19 10:12:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 517 states have (on average 1.1237911025145069) internal successors, (581), 517 states have internal predecessors, (581), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 15 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-19 10:12:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 599 transitions. [2024-11-19 10:12:50,551 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 599 transitions. Word has length 402 [2024-11-19 10:12:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:12:50,552 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 599 transitions. [2024-11-19 10:12:50,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.235294117647059) internal successors, (114), 46 states have internal predecessors, (114), 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) [2024-11-19 10:12:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 599 transitions. [2024-11-19 10:12:50,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-19 10:12:50,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:12:50,555 INFO L215 NwaCegarLoop]: trace histogram [117, 117, 117, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1] [2024-11-19 10:12:50,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 10:12:50,759 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 [2024-11-19 10:12:50,760 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:12:50,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:12:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2104897059, now seen corresponding path program 13 times [2024-11-19 10:12:50,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:12:50,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442503349] [2024-11-19 10:12:50,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 10:12:50,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:12:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 23025 backedges. 8697 proven. 1337 refuted. 0 times theorem prover too weak. 12991 trivial. 0 not checked. [2024-11-19 10:12:52,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:12:52,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442503349] [2024-11-19 10:12:52,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442503349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:12:52,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351040614] [2024-11-19 10:12:52,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 10:12:52,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:12:52,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:12:52,267 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) [2024-11-19 10:12:52,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 10:12:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 10:12:52,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 10:12:52,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:12:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 23025 backedges. 8716 proven. 1316 refuted. 0 times theorem prover too weak. 12993 trivial. 0 not checked. [2024-11-19 10:12:52,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:12:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 23025 backedges. 8716 proven. 1316 refuted. 0 times theorem prover too weak. 12993 trivial. 0 not checked. [2024-11-19 10:12:59,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351040614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:12:59,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:12:59,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 43 [2024-11-19 10:12:59,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48968951] [2024-11-19 10:12:59,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:12:59,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-19 10:12:59,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:12:59,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-19 10:12:59,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1583, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 10:12:59,574 INFO L87 Difference]: Start difference. First operand 535 states and 599 transitions. Second operand has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 35 states have internal predecessors, (100), 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) [2024-11-19 10:13:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:13:00,528 INFO L93 Difference]: Finished difference Result 980 states and 1109 transitions. [2024-11-19 10:13:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-19 10:13:00,531 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 35 states have internal predecessors, (100), 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 511 [2024-11-19 10:13:00,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:13:00,534 INFO L225 Difference]: With dead ends: 980 [2024-11-19 10:13:00,534 INFO L226 Difference]: Without dead ends: 562 [2024-11-19 10:13:00,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 983 SyntacticMatches, 37 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3033 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1132, Invalid=7058, Unknown=0, NotChecked=0, Total=8190 [2024-11-19 10:13:00,537 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 10:13:00,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 10:13:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-19 10:13:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-19 10:13:00,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 543 states have (on average 1.1197053406998159) internal successors, (608), 543 states have internal predecessors, (608), 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) [2024-11-19 10:13:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 627 transitions. [2024-11-19 10:13:00,593 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 627 transitions. Word has length 511 [2024-11-19 10:13:00,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:13:00,593 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 627 transitions. [2024-11-19 10:13:00,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.3255813953488373) internal successors, (100), 35 states have internal predecessors, (100), 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) [2024-11-19 10:13:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 627 transitions. [2024-11-19 10:13:00,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-19 10:13:00,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:13:00,596 INFO L215 NwaCegarLoop]: trace histogram [123, 123, 123, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1] [2024-11-19 10:13:00,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 10:13:00,800 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 [2024-11-19 10:13:00,800 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:13:00,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:13:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash 570088634, now seen corresponding path program 14 times [2024-11-19 10:13:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:13:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460517717] [2024-11-19 10:13:00,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 10:13:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:13:00,930 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 10:13:00,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:13:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 25539 backedges. 9937 proven. 429 refuted. 0 times theorem prover too weak. 15173 trivial. 0 not checked. [2024-11-19 10:13:02,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:13:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460517717] [2024-11-19 10:13:02,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460517717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:13:02,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72106774] [2024-11-19 10:13:02,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 10:13:02,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:13:02,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:13:02,018 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) [2024-11-19 10:13:02,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 10:13:02,425 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 10:13:02,426 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:13:02,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 10:13:02,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:13:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 25539 backedges. 9867 proven. 499 refuted. 0 times theorem prover too weak. 15173 trivial. 0 not checked. [2024-11-19 10:13:02,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:13:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25539 backedges. 9867 proven. 499 refuted. 0 times theorem prover too weak. 15173 trivial. 0 not checked. [2024-11-19 10:13:09,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72106774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:13:09,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:13:09,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 40 [2024-11-19 10:13:09,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948676510] [2024-11-19 10:13:09,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:13:09,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-19 10:13:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:13:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-19 10:13:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1343, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 10:13:09,956 INFO L87 Difference]: Start difference. First operand 562 states and 627 transitions. Second operand has 40 states, 40 states have (on average 2.375) internal successors, (95), 32 states have internal predecessors, (95), 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) [2024-11-19 10:13:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:13:10,520 INFO L93 Difference]: Finished difference Result 980 states and 1108 transitions. [2024-11-19 10:13:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-19 10:13:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 32 states have internal predecessors, (95), 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 540 [2024-11-19 10:13:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:13:10,523 INFO L225 Difference]: With dead ends: 980 [2024-11-19 10:13:10,523 INFO L226 Difference]: Without dead ends: 562 [2024-11-19 10:13:10,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1042 SyntacticMatches, 36 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=878, Invalid=4822, Unknown=0, NotChecked=0, Total=5700 [2024-11-19 10:13:10,527 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 10:13:10,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 10:13:10,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-19 10:13:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-19 10:13:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 543 states have (on average 1.1049723756906078) internal successors, (600), 543 states have internal predecessors, (600), 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) [2024-11-19 10:13:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 619 transitions. [2024-11-19 10:13:10,585 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 619 transitions. Word has length 540 [2024-11-19 10:13:10,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:13:10,586 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 619 transitions. [2024-11-19 10:13:10,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.375) internal successors, (95), 32 states have internal predecessors, (95), 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) [2024-11-19 10:13:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 619 transitions. [2024-11-19 10:13:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2024-11-19 10:13:10,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:13:10,590 INFO L215 NwaCegarLoop]: trace histogram [124, 124, 124, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1] [2024-11-19 10:13:10,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 10:13:10,792 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 [2024-11-19 10:13:10,793 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:13:10,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:13:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1825140551, now seen corresponding path program 15 times [2024-11-19 10:13:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:13:10,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001279215] [2024-11-19 10:13:10,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 10:13:10,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:13:10,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-19 10:13:10,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:13:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25923 backedges. 11862 proven. 7858 refuted. 0 times theorem prover too weak. 6203 trivial. 0 not checked. [2024-11-19 10:13:11,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:13:11,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001279215] [2024-11-19 10:13:11,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001279215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:13:11,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473699555] [2024-11-19 10:13:11,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 10:13:11,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:13:11,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:13:11,480 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) [2024-11-19 10:13:11,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 10:13:12,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-19 10:13:12,030 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:13:12,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 10:13:12,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:13:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25923 backedges. 11862 proven. 7858 refuted. 0 times theorem prover too weak. 6203 trivial. 0 not checked. [2024-11-19 10:13:12,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:13:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 25923 backedges. 11862 proven. 7858 refuted. 0 times theorem prover too weak. 6203 trivial. 0 not checked. [2024-11-19 10:13:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473699555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:13:15,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:13:15,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-19 10:13:15,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133054165] [2024-11-19 10:13:15,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:13:15,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-19 10:13:15,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:13:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-19 10:13:15,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=3185, Unknown=0, NotChecked=0, Total=3782 [2024-11-19 10:13:15,408 INFO L87 Difference]: Start difference. First operand 562 states and 619 transitions. Second operand has 62 states, 61 states have (on average 2.2295081967213113) internal successors, (136), 54 states have internal predecessors, (136), 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) [2024-11-19 10:13:20,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:13:20,160 INFO L93 Difference]: Finished difference Result 2199 states and 2507 transitions. [2024-11-19 10:13:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2024-11-19 10:13:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.2295081967213113) internal successors, (136), 54 states have internal predecessors, (136), 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 543 [2024-11-19 10:13:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:13:20,165 INFO L225 Difference]: With dead ends: 2199 [2024-11-19 10:13:20,166 INFO L226 Difference]: Without dead ends: 1773 [2024-11-19 10:13:20,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1315 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28151 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=14041, Invalid=54341, Unknown=0, NotChecked=0, Total=68382 [2024-11-19 10:13:20,173 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 10:13:20,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 258 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 10:13:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2024-11-19 10:13:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 679. [2024-11-19 10:13:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 658 states have (on average 1.121580547112462) internal successors, (738), 658 states have internal predecessors, (738), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 18 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 10:13:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 759 transitions. [2024-11-19 10:13:20,263 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 759 transitions. Word has length 543 [2024-11-19 10:13:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:13:20,264 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 759 transitions. [2024-11-19 10:13:20,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.2295081967213113) internal successors, (136), 54 states have internal predecessors, (136), 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) [2024-11-19 10:13:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 759 transitions. [2024-11-19 10:13:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2024-11-19 10:13:20,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:13:20,267 INFO L215 NwaCegarLoop]: trace histogram [159, 159, 159, 20, 19, 19, 19, 19, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1] [2024-11-19 10:13:20,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 10:13:20,471 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 [2024-11-19 10:13:20,472 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:13:20,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:13:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1966590478, now seen corresponding path program 16 times [2024-11-19 10:13:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:13:20,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437719654] [2024-11-19 10:13:20,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 10:13:20,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:13:20,873 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 10:13:20,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:13:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 42095 backedges. 16347 proven. 254 refuted. 0 times theorem prover too weak. 25494 trivial. 0 not checked. [2024-11-19 10:13:22,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:13:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437719654] [2024-11-19 10:13:22,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437719654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:13:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130180948] [2024-11-19 10:13:22,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 10:13:22,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:13:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:13:22,131 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) [2024-11-19 10:13:22,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 10:13:22,706 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 10:13:22,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:13:22,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-19 10:13:22,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:13:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 42095 backedges. 15203 proven. 2126 refuted. 0 times theorem prover too weak. 24766 trivial. 0 not checked. [2024-11-19 10:13:23,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 10:13:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 42095 backedges. 15203 proven. 2126 refuted. 0 times theorem prover too weak. 24766 trivial. 0 not checked. [2024-11-19 10:13:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130180948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 10:13:34,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 10:13:34,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 45, 45] total 60 [2024-11-19 10:13:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428158941] [2024-11-19 10:13:34,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 10:13:34,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-19 10:13:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 10:13:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-19 10:13:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=3210, Unknown=0, NotChecked=0, Total=3540 [2024-11-19 10:13:34,008 INFO L87 Difference]: Start difference. First operand 679 states and 759 transitions. Second operand has 60 states, 60 states have (on average 2.283333333333333) internal successors, (137), 51 states have internal predecessors, (137), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-19 10:13:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 10:13:35,474 INFO L93 Difference]: Finished difference Result 1244 states and 1405 transitions. [2024-11-19 10:13:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-19 10:13:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.283333333333333) internal successors, (137), 51 states have internal predecessors, (137), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 680 [2024-11-19 10:13:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 10:13:35,478 INFO L225 Difference]: With dead ends: 1244 [2024-11-19 10:13:35,478 INFO L226 Difference]: Without dead ends: 709 [2024-11-19 10:13:35,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1474 GetRequests, 1295 SyntacticMatches, 42 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8686 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2301, Invalid=16881, Unknown=0, NotChecked=0, Total=19182 [2024-11-19 10:13:35,481 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 10:13:35,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 266 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 10:13:35,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-19 10:13:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-11-19 10:13:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 687 states have (on average 1.1179039301310043) internal successors, (768), 687 states have internal predecessors, (768), 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) [2024-11-19 10:13:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 790 transitions. [2024-11-19 10:13:35,589 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 790 transitions. Word has length 680 [2024-11-19 10:13:35,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 10:13:35,589 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 790 transitions. [2024-11-19 10:13:35,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.283333333333333) internal successors, (137), 51 states have internal predecessors, (137), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-19 10:13:35,590 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 790 transitions. [2024-11-19 10:13:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2024-11-19 10:13:35,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 10:13:35,594 INFO L215 NwaCegarLoop]: trace histogram [167, 167, 167, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1] [2024-11-19 10:13:35,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 10:13:35,798 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 [2024-11-19 10:13:35,798 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 10:13:35,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 10:13:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1273482063, now seen corresponding path program 17 times [2024-11-19 10:13:35,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 10:13:35,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088026737] [2024-11-19 10:13:35,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 10:13:35,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 10:13:35,861 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-19 10:13:35,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:13:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 46308 backedges. 23432 proven. 1570 refuted. 0 times theorem prover too weak. 21306 trivial. 0 not checked. [2024-11-19 10:13:37,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 10:13:37,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088026737] [2024-11-19 10:13:37,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088026737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 10:13:37,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124329263] [2024-11-19 10:13:37,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 10:13:37,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 10:13:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 10:13:37,176 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) [2024-11-19 10:13:37,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 10:13:37,846 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-19 10:13:37,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 10:13:37,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 1235 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 10:13:37,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 10:13:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 46308 backedges. 23499 proven. 1661 refuted. 0 times theorem prover too weak. 21148 trivial. 0 not checked. [2024-11-19 10:13:38,119 INFO L311 TraceCheckSpWp]: Computing backward predicates...