./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/mine2017-ex4.6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/mine2017-ex4.6.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 32bit --witnessprinter.graph.data.programhash 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:28:16,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:28:16,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 20:28:16,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:28:16,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:28:16,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:28:16,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:28:16,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:28:16,222 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:28:16,222 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:28:16,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:28:16,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:28:16,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:28:16,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:28:16,224 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:28:16,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:28:16,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 20:28:16,225 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:28:16,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:28:16,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:28:16,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:28:16,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 20:28:16,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:28:16,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 20:28:16,229 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:28:16,231 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 20:28:16,232 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:28:16,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:28:16,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 20:28:16,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:28:16,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:28:16,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:28:16,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:28:16,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:28:16,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:28:16,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:28:16,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:28:16,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 20:28:16,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:28:16,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:28:16,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:28:16,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:28:16,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:28:16,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:28:16,237 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76 [2024-10-11 20:28:16,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:28:16,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:28:16,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:28:16,527 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:28:16,528 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:28:16,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/mine2017-ex4.6.i [2024-10-11 20:28:17,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:28:18,074 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:28:18,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/mine2017-ex4.6.i [2024-10-11 20:28:18,081 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/28cfc9c76/b269b2677ecf4a8485ef57573a0a56c1/FLAG14e0525b6 [2024-10-11 20:28:18,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/28cfc9c76/b269b2677ecf4a8485ef57573a0a56c1 [2024-10-11 20:28:18,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:28:18,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:28:18,102 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:28:18,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:28:18,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:28:18,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486581d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18, skipping insertion in model container [2024-10-11 20:28:18,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:28:18,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:28:18,320 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:28:18,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:28:18,346 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:28:18,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18 WrapperNode [2024-10-11 20:28:18,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:28:18,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:28:18,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:28:18,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:28:18,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,376 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2024-10-11 20:28:18,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:28:18,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:28:18,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:28:18,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:28:18,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,394 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 20:28:18,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:28:18,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:28:18,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:28:18,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:28:18,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (1/1) ... [2024-10-11 20:28:18,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:28:18,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:28:18,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:28:18,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:28:18,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:28:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 20:28:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:28:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:28:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 20:28:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 20:28:18,553 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:28:18,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:28:18,666 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-11 20:28:18,667 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:28:18,695 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:28:18,695 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 20:28:18,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:28:18 BoogieIcfgContainer [2024-10-11 20:28:18,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:28:18,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:28:18,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:28:18,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:28:18,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:28:18" (1/3) ... [2024-10-11 20:28:18,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce9566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:28:18, skipping insertion in model container [2024-10-11 20:28:18,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:28:18" (2/3) ... [2024-10-11 20:28:18,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce9566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:28:18, skipping insertion in model container [2024-10-11 20:28:18,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:28:18" (3/3) ... [2024-10-11 20:28:18,708 INFO L112 eAbstractionObserver]: Analyzing ICFG mine2017-ex4.6.i [2024-10-11 20:28:18,725 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:28:18,726 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 20:28:18,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:28:18,789 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;@60906cf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:28:18,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 20:28:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 20:28:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 20:28:18,802 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:28:18,803 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:28:18,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:28:18,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:28:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1016299012, now seen corresponding path program 1 times [2024-10-11 20:28:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:28:18,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978640256] [2024-10-11 20:28:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:28:18,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:28:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 20:28:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:28:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:28:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978640256] [2024-10-11 20:28:19,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978640256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:28:19,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:28:19,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:28:19,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880076261] [2024-10-11 20:28:19,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:28:19,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:28:19,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:28:19,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:28:19,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:28:19,106 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 20:28:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:28:19,172 INFO L93 Difference]: Finished difference Result 39 states and 58 transitions. [2024-10-11 20:28:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:28:19,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2024-10-11 20:28:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:28:19,179 INFO L225 Difference]: With dead ends: 39 [2024-10-11 20:28:19,179 INFO L226 Difference]: Without dead ends: 18 [2024-10-11 20:28:19,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:28:19,185 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 20:28:19,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 20:28:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-11 20:28:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-10-11 20:28:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 20:28:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-10-11 20:28:19,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2024-10-11 20:28:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:28:19,220 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-10-11 20:28:19,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 20:28:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-10-11 20:28:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 20:28:19,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:28:19,222 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:28:19,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 20:28:19,223 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:28:19,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:28:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1440498347, now seen corresponding path program 1 times [2024-10-11 20:28:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:28:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623243236] [2024-10-11 20:28:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:28:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:28:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 20:28:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:28:19,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:28:19,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623243236] [2024-10-11 20:28:19,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623243236] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:28:19,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:28:19,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:28:19,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604757768] [2024-10-11 20:28:19,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:28:19,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:28:19,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:28:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:28:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:28:19,319 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 20:28:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:28:19,344 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-10-11 20:28:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:28:19,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-10-11 20:28:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:28:19,345 INFO L225 Difference]: With dead ends: 17 [2024-10-11 20:28:19,345 INFO L226 Difference]: Without dead ends: 16 [2024-10-11 20:28:19,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:28:19,346 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 20:28:19,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 20:28:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-11 20:28:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-11 20:28:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-11 20:28:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-10-11 20:28:19,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2024-10-11 20:28:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:28:19,357 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-10-11 20:28:19,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 20:28:19,358 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-10-11 20:28:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 20:28:19,358 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:28:19,359 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 20:28:19,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 20:28:19,359 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:28:19,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:28:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2112290042, now seen corresponding path program 1 times [2024-10-11 20:28:19,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:28:19,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800149330] [2024-10-11 20:28:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:28:19,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:28:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 20:28:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 20:28:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 20:28:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 20:28:19,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:28:19,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800149330] [2024-10-11 20:28:19,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800149330] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:28:19,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913443658] [2024-10-11 20:28:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:28:19,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:28:19,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:28:19,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:28:19,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 20:28:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:19,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:28:19,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:28:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 20:28:19,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:28:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 20:28:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913443658] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:28:19,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:28:19,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-11 20:28:19,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616124850] [2024-10-11 20:28:19,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:28:19,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:28:19,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:28:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:28:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:28:19,816 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 20:28:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:28:19,902 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2024-10-11 20:28:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:28:19,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2024-10-11 20:28:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:28:19,904 INFO L225 Difference]: With dead ends: 35 [2024-10-11 20:28:19,905 INFO L226 Difference]: Without dead ends: 34 [2024-10-11 20:28:19,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:28:19,908 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 20:28:19,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 20:28:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-11 20:28:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-10-11 20:28:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 20:28:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-10-11 20:28:19,919 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 23 [2024-10-11 20:28:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:28:19,920 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-10-11 20:28:19,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 20:28:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-10-11 20:28:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 20:28:19,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:28:19,925 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1] [2024-10-11 20:28:19,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 20:28:20,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:28:20,126 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:28:20,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:28:20,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1787392756, now seen corresponding path program 2 times [2024-10-11 20:28:20,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:28:20,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304398631] [2024-10-11 20:28:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:28:20,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:28:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 20:28:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 20:28:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 20:28:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 20:28:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-11 20:28:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 20:28:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-11 20:28:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 20:28:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 20:28:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-11 20:28:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:28:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304398631] [2024-10-11 20:28:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304398631] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:28:20,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431677891] [2024-10-11 20:28:20,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:28:20,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:28:20,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:28:20,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:28:20,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 20:28:20,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:28:20,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:28:20,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 20:28:20,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:28:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-11 20:28:20,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:28:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-11 20:28:20,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431677891] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:28:20,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:28:20,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-10-11 20:28:20,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946009327] [2024-10-11 20:28:20,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:28:20,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 20:28:20,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:28:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 20:28:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-11 20:28:20,988 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-11 20:28:21,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:28:21,129 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2024-10-11 20:28:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:28:21,130 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 65 [2024-10-11 20:28:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:28:21,132 INFO L225 Difference]: With dead ends: 71 [2024-10-11 20:28:21,132 INFO L226 Difference]: Without dead ends: 70 [2024-10-11 20:28:21,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-11 20:28:21,133 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 20:28:21,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 20:28:21,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-11 20:28:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-10-11 20:28:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 20:28:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2024-10-11 20:28:21,148 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 65 [2024-10-11 20:28:21,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:28:21,148 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2024-10-11 20:28:21,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-11 20:28:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2024-10-11 20:28:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-11 20:28:21,151 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 20:28:21,151 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1] [2024-10-11 20:28:21,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 20:28:21,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:28:21,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-11 20:28:21,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:28:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash -415282536, now seen corresponding path program 3 times [2024-10-11 20:28:21,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 20:28:21,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131856023] [2024-10-11 20:28:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:28:21,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 20:28:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 20:28:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 20:28:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-11 20:28:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-11 20:28:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-11 20:28:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 20:28:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-11 20:28:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 20:28:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-11 20:28:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-11 20:28:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-11 20:28:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-11 20:28:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-11 20:28:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-11 20:28:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-11 20:28:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-11 20:28:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-11 20:28:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:21,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-11 20:28:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:22,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-11 20:28:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:22,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-11 20:28:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:22,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-11 20:28:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:28:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-11 20:28:22,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 20:28:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131856023] [2024-10-11 20:28:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131856023] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 20:28:22,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567847837] [2024-10-11 20:28:22,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:28:22,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:28:22,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:28:22,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 20:28:22,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 20:28:22,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 20:28:22,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:28:22,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 20:28:22,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:28:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-10-11 20:28:22,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:28:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2024-10-11 20:28:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567847837] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:28:22,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 20:28:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 5, 5] total 30 [2024-10-11 20:28:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374638444] [2024-10-11 20:28:22,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 20:28:22,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 20:28:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 20:28:22,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 20:28:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2024-10-11 20:28:22,358 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 31 states, 30 states have (on average 2.1) internal successors, (63), 31 states have internal predecessors, (63), 14 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) [2024-10-11 20:28:22,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 20:28:22,575 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2024-10-11 20:28:22,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 20:28:22,576 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.1) internal successors, (63), 31 states have internal predecessors, (63), 14 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) Word has length 149 [2024-10-11 20:28:22,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 20:28:22,577 INFO L225 Difference]: With dead ends: 80 [2024-10-11 20:28:22,577 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 20:28:22,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2024-10-11 20:28:22,578 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 20:28:22,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 29 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 20:28:22,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 20:28:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 20:28:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:28:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 20:28:22,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2024-10-11 20:28:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 20:28:22,583 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 20:28:22,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1) internal successors, (63), 31 states have internal predecessors, (63), 14 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (27), 14 states have call predecessors, (27), 14 states have call successors, (27) [2024-10-11 20:28:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 20:28:22,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 20:28:22,586 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-10-11 20:28:22,587 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-10-11 20:28:22,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 20:28:22,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 20:28:22,790 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 20:28:22,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-11 20:28:22,925 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 20:28:22,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 08:28:22 BoogieIcfgContainer [2024-10-11 20:28:22,943 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 20:28:22,944 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 20:28:22,944 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 20:28:22,944 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 20:28:22,945 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:28:18" (3/4) ... [2024-10-11 20:28:22,947 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 20:28:22,950 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-11 20:28:22,954 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-11 20:28:22,955 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 20:28:22,955 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 20:28:22,955 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 20:28:23,044 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 20:28:23,045 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 20:28:23,046 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 20:28:23,046 INFO L158 Benchmark]: Toolchain (without parser) took 4946.02ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 126.1MB in the beginning and 132.4MB in the end (delta: -6.3MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2024-10-11 20:28:23,046 INFO L158 Benchmark]: CDTParser took 1.08ms. Allocated memory is still 113.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:28:23,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.92ms. Allocated memory is still 163.6MB. Free memory was 126.0MB in the beginning and 114.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 20:28:23,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.05ms. Allocated memory is still 163.6MB. Free memory was 114.4MB in the beginning and 112.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 20:28:23,047 INFO L158 Benchmark]: Boogie Preprocessor took 24.69ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 111.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:28:23,047 INFO L158 Benchmark]: RCFGBuilder took 293.27ms. Allocated memory is still 163.6MB. Free memory was 111.3MB in the beginning and 100.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:28:23,048 INFO L158 Benchmark]: TraceAbstraction took 4244.84ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 99.8MB in the beginning and 136.6MB in the end (delta: -36.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:28:23,048 INFO L158 Benchmark]: Witness Printer took 101.99ms. Allocated memory is still 197.1MB. Free memory was 136.6MB in the beginning and 132.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 20:28:23,050 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08ms. Allocated memory is still 113.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.92ms. Allocated memory is still 163.6MB. Free memory was 126.0MB in the beginning and 114.4MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.05ms. Allocated memory is still 163.6MB. Free memory was 114.4MB in the beginning and 112.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.69ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 111.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 293.27ms. Allocated memory is still 163.6MB. Free memory was 111.3MB in the beginning and 100.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4244.84ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 99.8MB in the beginning and 136.6MB in the end (delta: -36.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 101.99ms. Allocated memory is still 197.1MB. Free memory was 136.6MB in the beginning and 132.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 139 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 297 IncrementalHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 38 mSDtfsCounter, 297 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 579 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=4, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 493 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 1214 SizeOfPredicates, 0 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 3602/4086 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((0 <= x) && (x <= 40)) - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-11 20:28:23,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE