./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 18:06:36,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 18:06:36,601 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-20 18:06:36,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 18:06:36,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 18:06:36,644 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 18:06:36,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 18:06:36,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 18:06:36,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 18:06:36,647 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 18:06:36,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 18:06:36,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 18:06:36,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 18:06:36,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 18:06:36,650 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 18:06:36,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 18:06:36,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 18:06:36,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 18:06:36,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 18:06:36,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 18:06:36,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 18:06:36,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 18:06:36,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 18:06:36,655 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 18:06:36,655 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 18:06:36,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 18:06:36,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 18:06:36,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 18:06:36,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 18:06:36,657 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 18:06:36,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 18:06:36,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 18:06:36,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 18:06:36,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 18:06:36,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 18:06:36,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 18:06:36,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 18:06:36,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 18:06:36,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 18:06:36,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 18:06:36,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 18:06:36,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe [2024-11-20 18:06:36,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 18:06:36,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 18:06:36,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 18:06:36,927 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 18:06:36,928 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 18:06:36,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2024-11-20 18:06:38,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 18:06:38,502 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 18:06:38,503 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2024-11-20 18:06:38,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da73ffbf/a05bf59d25c2497fa3dfb19810740e67/FLAG2df9575e0 [2024-11-20 18:06:38,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da73ffbf/a05bf59d25c2497fa3dfb19810740e67 [2024-11-20 18:06:38,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 18:06:38,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 18:06:38,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 18:06:38,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 18:06:38,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 18:06:38,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:06:38" (1/1) ... [2024-11-20 18:06:38,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c12152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:38, skipping insertion in model container [2024-11-20 18:06:38,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:06:38" (1/1) ... [2024-11-20 18:06:38,931 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 18:06:39,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 18:06:39,108 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 18:06:39,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 18:06:39,138 INFO L204 MainTranslator]: Completed translation [2024-11-20 18:06:39,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39 WrapperNode [2024-11-20 18:06:39,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 18:06:39,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 18:06:39,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 18:06:39,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 18:06:39,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,167 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2024-11-20 18:06:39,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 18:06:39,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 18:06:39,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 18:06:39,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 18:06:39,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,179 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,185 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-20 18:06:39,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 18:06:39,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 18:06:39,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 18:06:39,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 18:06:39,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (1/1) ... [2024-11-20 18:06:39,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 18:06:39,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:39,224 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) [2024-11-20 18:06:39,230 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 [2024-11-20 18:06:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-20 18:06:39,272 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-20 18:06:39,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 18:06:39,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 18:06:39,327 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 18:06:39,329 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 18:06:39,470 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-20 18:06:39,471 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 18:06:39,489 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 18:06:39,489 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 18:06:39,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:39 BoogieIcfgContainer [2024-11-20 18:06:39,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 18:06:39,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 18:06:39,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 18:06:39,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 18:06:39,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:06:38" (1/3) ... [2024-11-20 18:06:39,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4304da78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:39, skipping insertion in model container [2024-11-20 18:06:39,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:06:39" (2/3) ... [2024-11-20 18:06:39,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4304da78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:06:39, skipping insertion in model container [2024-11-20 18:06:39,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:06:39" (3/3) ... [2024-11-20 18:06:39,500 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2024-11-20 18:06:39,516 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 18:06:39,517 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-20 18:06:39,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 18:06:39,586 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;@4ac18a1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 18:06:39,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 18:06:39,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 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) [2024-11-20 18:06:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 18:06:39,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:39,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:39,599 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:39,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225386, now seen corresponding path program 1 times [2024-11-20 18:06:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:39,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708225346] [2024-11-20 18:06:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:39,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:39,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:39,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708225346] [2024-11-20 18:06:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708225346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 18:06:39,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 18:06:39,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 18:06:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962980482] [2024-11-20 18:06:39,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 18:06:39,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 18:06:39,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:39,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 18:06:39,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 18:06:39,825 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.3333333333333335) 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) [2024-11-20 18:06:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:39,947 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-20 18:06:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 18:06:39,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-20 18:06:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:39,955 INFO L225 Difference]: With dead ends: 47 [2024-11-20 18:06:39,955 INFO L226 Difference]: Without dead ends: 29 [2024-11-20 18:06:39,957 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 [2024-11-20 18:06:39,960 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:39,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 92 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 18:06:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-20 18:06:39,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2024-11-20 18:06:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-20 18:06:39,986 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2024-11-20 18:06:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:39,987 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-20 18:06:39,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-20 18:06:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 18:06:39,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:39,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:39,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 18:06:39,988 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:39,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:39,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225162, now seen corresponding path program 1 times [2024-11-20 18:06:39,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921818897] [2024-11-20 18:06:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:40,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921818897] [2024-11-20 18:06:40,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921818897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 18:06:40,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 18:06:40,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 18:06:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037017421] [2024-11-20 18:06:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 18:06:40,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 18:06:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 18:06:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 18:06:40,085 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:40,134 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-20 18:06:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 18:06:40,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-20 18:06:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:40,138 INFO L225 Difference]: With dead ends: 29 [2024-11-20 18:06:40,138 INFO L226 Difference]: Without dead ends: 28 [2024-11-20 18:06:40,138 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 [2024-11-20 18:06:40,142 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:40,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 18:06:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-20 18:06:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-11-20 18:06:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-20 18:06:40,152 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2024-11-20 18:06:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:40,153 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-20 18:06:40,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-20 18:06:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 18:06:40,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:40,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:40,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 18:06:40,155 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:40,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1233653331, now seen corresponding path program 1 times [2024-11-20 18:06:40,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:40,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871751732] [2024-11-20 18:06:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871751732] [2024-11-20 18:06:40,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871751732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 18:06:40,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 18:06:40,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 18:06:40,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388047082] [2024-11-20 18:06:40,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 18:06:40,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 18:06:40,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:40,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 18:06:40,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 18:06:40,245 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-20 18:06:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:40,303 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-11-20 18:06:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 18:06:40,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-11-20 18:06:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:40,306 INFO L225 Difference]: With dead ends: 35 [2024-11-20 18:06:40,306 INFO L226 Difference]: Without dead ends: 34 [2024-11-20 18:06:40,306 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 [2024-11-20 18:06:40,308 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:40,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 18:06:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-20 18:06:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-11-20 18:06:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-20 18:06:40,315 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2024-11-20 18:06:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:40,315 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-20 18:06:40,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-20 18:06:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-20 18:06:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 18:06:40,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:40,316 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:40,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 18:06:40,317 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:40,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1233660282, now seen corresponding path program 1 times [2024-11-20 18:06:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336798154] [2024-11-20 18:06:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336798154] [2024-11-20 18:06:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336798154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 18:06:40,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 18:06:40,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 18:06:40,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083778426] [2024-11-20 18:06:40,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 18:06:40,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 18:06:40,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 18:06:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 18:06:40,403 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-20 18:06:40,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:40,447 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-20 18:06:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 18:06:40,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-11-20 18:06:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:40,454 INFO L225 Difference]: With dead ends: 33 [2024-11-20 18:06:40,455 INFO L226 Difference]: Without dead ends: 32 [2024-11-20 18:06:40,455 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 [2024-11-20 18:06:40,456 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:40,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 18:06:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-20 18:06:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-20 18:06:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-20 18:06:40,468 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2024-11-20 18:06:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:40,468 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-20 18:06:40,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-20 18:06:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-20 18:06:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 18:06:40,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:40,469 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:40,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 18:06:40,470 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:40,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:40,470 INFO L85 PathProgramCache]: Analyzing trace with hash -525255754, now seen corresponding path program 1 times [2024-11-20 18:06:40,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:40,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702633528] [2024-11-20 18:06:40,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702633528] [2024-11-20 18:06:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702633528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931178216] [2024-11-20 18:06:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:40,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:40,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:40,585 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) [2024-11-20 18:06:40,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 18:06:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:40,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 18:06:40,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:40,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931178216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:40,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 18:06:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844031652] [2024-11-20 18:06:40,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:40,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 18:06:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 18:06:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-20 18:06:40,790 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-20 18:06:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:40,914 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-11-20 18:06:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 18:06:40,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 18:06:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:40,917 INFO L225 Difference]: With dead ends: 66 [2024-11-20 18:06:40,917 INFO L226 Difference]: Without dead ends: 65 [2024-11-20 18:06:40,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-20 18:06:40,918 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:40,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 106 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 18:06:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-20 18:06:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2024-11-20 18:06:40,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 40 states have internal predecessors, (47), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-11-20 18:06:40,932 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2024-11-20 18:06:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:40,933 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-11-20 18:06:40,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-20 18:06:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-11-20 18:06:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 18:06:40,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:40,935 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:40,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 18:06:41,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:41,136 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:41,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash -525255530, now seen corresponding path program 1 times [2024-11-20 18:06:41,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:41,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976282559] [2024-11-20 18:06:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:41,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:41,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:41,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976282559] [2024-11-20 18:06:41,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976282559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:41,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906555059] [2024-11-20 18:06:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:41,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:41,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:41,214 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) [2024-11-20 18:06:41,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 18:06:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:41,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 18:06:41,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:41,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 18:06:41,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906555059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 18:06:41,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 18:06:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-20 18:06:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916124329] [2024-11-20 18:06:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 18:06:41,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 18:06:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 18:06:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-20 18:06:41,299 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:41,373 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-11-20 18:06:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 18:06:41,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 18:06:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:41,375 INFO L225 Difference]: With dead ends: 60 [2024-11-20 18:06:41,375 INFO L226 Difference]: Without dead ends: 59 [2024-11-20 18:06:41,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 18:06:41,376 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:41,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 18:06:41,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-20 18:06:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-11-20 18:06:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 43 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2024-11-20 18:06:41,390 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2024-11-20 18:06:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:41,391 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2024-11-20 18:06:41,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2024-11-20 18:06:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 18:06:41,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:41,392 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:41,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 18:06:41,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-20 18:06:41,593 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:41,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash 909324273, now seen corresponding path program 1 times [2024-11-20 18:06:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:41,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248817239] [2024-11-20 18:06:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:41,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:41,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:41,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248817239] [2024-11-20 18:06:41,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248817239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:41,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635159432] [2024-11-20 18:06:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:41,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:41,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:41,654 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) [2024-11-20 18:06:41,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 18:06:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:41,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 18:06:41,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:41,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635159432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:41,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:41,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 18:06:41,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223194159] [2024-11-20 18:06:41,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:41,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 18:06:41,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:41,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 18:06:41,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-20 18:06:41,780 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-20 18:06:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:42,055 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2024-11-20 18:06:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 18:06:42,055 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 18:06:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:42,060 INFO L225 Difference]: With dead ends: 101 [2024-11-20 18:06:42,060 INFO L226 Difference]: Without dead ends: 99 [2024-11-20 18:06:42,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-20 18:06:42,062 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 95 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:42,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 102 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 18:06:42,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-20 18:06:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2024-11-20 18:06:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 62 states have internal predecessors, (79), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2024-11-20 18:06:42,078 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 14 [2024-11-20 18:06:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:42,079 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2024-11-20 18:06:42,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-20 18:06:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2024-11-20 18:06:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-20 18:06:42,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:42,080 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:42,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 18:06:42,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:42,281 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:42,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:42,282 INFO L85 PathProgramCache]: Analyzing trace with hash 909324497, now seen corresponding path program 1 times [2024-11-20 18:06:42,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:42,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011291335] [2024-11-20 18:06:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:42,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:42,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:42,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011291335] [2024-11-20 18:06:42,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011291335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:42,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975327933] [2024-11-20 18:06:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:42,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:42,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:42,348 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) [2024-11-20 18:06:42,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 18:06:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:42,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 18:06:42,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:42,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:42,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975327933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:42,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:42,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 18:06:42,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254261220] [2024-11-20 18:06:42,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:42,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 18:06:42,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:42,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 18:06:42,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-20 18:06:42,468 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-20 18:06:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:42,786 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2024-11-20 18:06:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 18:06:42,789 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-20 18:06:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:42,790 INFO L225 Difference]: With dead ends: 117 [2024-11-20 18:06:42,790 INFO L226 Difference]: Without dead ends: 115 [2024-11-20 18:06:42,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2024-11-20 18:06:42,791 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 120 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:42,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 72 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 18:06:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-20 18:06:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2024-11-20 18:06:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 75 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2024-11-20 18:06:42,812 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 14 [2024-11-20 18:06:42,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:42,812 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2024-11-20 18:06:42,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-20 18:06:42,812 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2024-11-20 18:06:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-20 18:06:42,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:42,813 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:42,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 18:06:43,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:43,017 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:43,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:43,017 INFO L85 PathProgramCache]: Analyzing trace with hash 896947802, now seen corresponding path program 1 times [2024-11-20 18:06:43,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:43,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878488068] [2024-11-20 18:06:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:43,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:43,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:43,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878488068] [2024-11-20 18:06:43,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878488068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:43,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599890029] [2024-11-20 18:06:43,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:43,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:43,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:43,079 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) [2024-11-20 18:06:43,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 18:06:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:43,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 18:06:43,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:43,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 18:06:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599890029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 18:06:43,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 18:06:43,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-20 18:06:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710740788] [2024-11-20 18:06:43,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 18:06:43,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 18:06:43,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:43,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 18:06:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-20 18:06:43,143 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:43,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:43,198 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2024-11-20 18:06:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 18:06:43,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-20 18:06:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:43,199 INFO L225 Difference]: With dead ends: 102 [2024-11-20 18:06:43,199 INFO L226 Difference]: Without dead ends: 101 [2024-11-20 18:06:43,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 18:06:43,202 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:43,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 18:06:43,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-20 18:06:43,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2024-11-20 18:06:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 79 states have internal predecessors, (99), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2024-11-20 18:06:43,221 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 15 [2024-11-20 18:06:43,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:43,222 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2024-11-20 18:06:43,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2024-11-20 18:06:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-20 18:06:43,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:43,222 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:43,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 18:06:43,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:43,424 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:43,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1875718568, now seen corresponding path program 1 times [2024-11-20 18:06:43,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:43,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429581705] [2024-11-20 18:06:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:43,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:43,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429581705] [2024-11-20 18:06:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429581705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375713428] [2024-11-20 18:06:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:43,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:43,478 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) [2024-11-20 18:06:43,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 18:06:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:43,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 18:06:43,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:43,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 18:06:43,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375713428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 18:06:43,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 18:06:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-20 18:06:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216179141] [2024-11-20 18:06:43,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 18:06:43,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 18:06:43,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 18:06:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-20 18:06:43,545 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:43,599 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2024-11-20 18:06:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 18:06:43,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-20 18:06:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:43,600 INFO L225 Difference]: With dead ends: 98 [2024-11-20 18:06:43,600 INFO L226 Difference]: Without dead ends: 97 [2024-11-20 18:06:43,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-20 18:06:43,601 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:43,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 52 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 18:06:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-20 18:06:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2024-11-20 18:06:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 72 states have internal predecessors, (89), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2024-11-20 18:06:43,617 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 15 [2024-11-20 18:06:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:43,619 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2024-11-20 18:06:43,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2024-11-20 18:06:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-20 18:06:43,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:43,620 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:43,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 18:06:43,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:43,821 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:43,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:43,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1875711617, now seen corresponding path program 1 times [2024-11-20 18:06:43,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:43,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984119663] [2024-11-20 18:06:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:43,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:43,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:43,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984119663] [2024-11-20 18:06:43,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984119663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:43,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347686783] [2024-11-20 18:06:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:43,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:43,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:43,880 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) [2024-11-20 18:06:43,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 18:06:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:43,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 18:06:43,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:43,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347686783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:44,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 18:06:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713363819] [2024-11-20 18:06:44,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:44,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 18:06:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 18:06:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-20 18:06:44,008 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-20 18:06:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:44,119 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-20 18:06:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 18:06:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 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 15 [2024-11-20 18:06:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:44,121 INFO L225 Difference]: With dead ends: 86 [2024-11-20 18:06:44,122 INFO L226 Difference]: Without dead ends: 85 [2024-11-20 18:06:44,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-20 18:06:44,123 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:44,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 48 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 18:06:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-20 18:06:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2024-11-20 18:06:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 65 states have internal predecessors, (75), 13 states have call successors, (13), 11 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:44,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-11-20 18:06:44,136 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 15 [2024-11-20 18:06:44,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:44,138 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-11-20 18:06:44,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-20 18:06:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-11-20 18:06:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 18:06:44,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:44,139 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:44,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 18:06:44,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:44,340 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:44,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1504515633, now seen corresponding path program 1 times [2024-11-20 18:06:44,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:44,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156031246] [2024-11-20 18:06:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:44,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:44,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156031246] [2024-11-20 18:06:44,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156031246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:44,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338917867] [2024-11-20 18:06:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:44,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:44,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:44,420 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) [2024-11-20 18:06:44,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 18:06:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:44,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 18:06:44,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:44,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:44,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338917867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:44,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:44,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2024-11-20 18:06:44,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715744716] [2024-11-20 18:06:44,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:44,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 18:06:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 18:06:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-20 18:06:44,666 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:45,260 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2024-11-20 18:06:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-20 18:06:45,260 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-20 18:06:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:45,261 INFO L225 Difference]: With dead ends: 151 [2024-11-20 18:06:45,261 INFO L226 Difference]: Without dead ends: 149 [2024-11-20 18:06:45,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=477, Invalid=1875, Unknown=0, NotChecked=0, Total=2352 [2024-11-20 18:06:45,263 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 275 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:45,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 76 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 18:06:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-20 18:06:45,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 77. [2024-11-20 18:06:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2024-11-20 18:06:45,274 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 26 [2024-11-20 18:06:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:45,274 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2024-11-20 18:06:45,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2024-11-20 18:06:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 18:06:45,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:45,276 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:45,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 18:06:45,476 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,SelfDestructingSolverStorable11 [2024-11-20 18:06:45,477 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:45,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1343457996, now seen corresponding path program 1 times [2024-11-20 18:06:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:45,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528928402] [2024-11-20 18:06:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:45,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:45,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:45,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528928402] [2024-11-20 18:06:45,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528928402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:45,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372998236] [2024-11-20 18:06:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:45,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:45,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:45,604 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) [2024-11-20 18:06:45,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 18:06:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:45,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 18:06:45,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:45,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:45,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372998236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:45,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:45,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-20 18:06:45,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772555159] [2024-11-20 18:06:45,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:45,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 18:06:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 18:06:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-20 18:06:45,795 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:46,285 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2024-11-20 18:06:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-20 18:06:46,286 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-20 18:06:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:46,287 INFO L225 Difference]: With dead ends: 195 [2024-11-20 18:06:46,287 INFO L226 Difference]: Without dead ends: 193 [2024-11-20 18:06:46,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2024-11-20 18:06:46,288 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 129 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:46,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 114 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 18:06:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-20 18:06:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 119. [2024-11-20 18:06:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 99 states have internal predecessors, (119), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2024-11-20 18:06:46,302 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 26 [2024-11-20 18:06:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:46,302 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2024-11-20 18:06:46,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:46,303 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2024-11-20 18:06:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 18:06:46,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:46,304 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 18:06:46,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 18:06:46,507 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,SelfDestructingSolverStorable12 [2024-11-20 18:06:46,508 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:46,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1894821127, now seen corresponding path program 2 times [2024-11-20 18:06:46,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:46,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485598003] [2024-11-20 18:06:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:46,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:46,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485598003] [2024-11-20 18:06:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485598003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:46,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790409584] [2024-11-20 18:06:46,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 18:06:46,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:46,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:46,669 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) [2024-11-20 18:06:46,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 18:06:46,698 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 18:06:46,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:06:46,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 18:06:46,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:46,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:47,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790409584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:47,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:47,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 29 [2024-11-20 18:06:47,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207180386] [2024-11-20 18:06:47,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:47,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-20 18:06:47,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-20 18:06:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2024-11-20 18:06:47,017 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:47,978 INFO L93 Difference]: Finished difference Result 263 states and 303 transitions. [2024-11-20 18:06:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-20 18:06:47,979 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-20 18:06:47,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:47,980 INFO L225 Difference]: With dead ends: 263 [2024-11-20 18:06:47,980 INFO L226 Difference]: Without dead ends: 261 [2024-11-20 18:06:47,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1149, Invalid=5013, Unknown=0, NotChecked=0, Total=6162 [2024-11-20 18:06:47,982 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 382 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:47,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 137 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 18:06:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-20 18:06:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 144. [2024-11-20 18:06:47,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 119 states have (on average 1.218487394957983) internal successors, (145), 120 states have internal predecessors, (145), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2024-11-20 18:06:48,001 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 38 [2024-11-20 18:06:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:48,001 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2024-11-20 18:06:48,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2024-11-20 18:06:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 18:06:48,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:48,002 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 18:06:48,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 18:06:48,202 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,SelfDestructingSolverStorable13 [2024-11-20 18:06:48,203 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:48,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash 28164967, now seen corresponding path program 2 times [2024-11-20 18:06:48,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:48,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002276173] [2024-11-20 18:06:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:48,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 18:06:48,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:48,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002276173] [2024-11-20 18:06:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002276173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326802736] [2024-11-20 18:06:48,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 18:06:48,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:48,316 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) [2024-11-20 18:06:48,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 18:06:48,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 18:06:48,350 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:06:48,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 18:06:48,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 18:06:48,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 41 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 18:06:48,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326802736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:48,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:48,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2024-11-20 18:06:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975468340] [2024-11-20 18:06:48,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:48,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 18:06:48,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 18:06:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-11-20 18:06:48,666 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:49,179 INFO L93 Difference]: Finished difference Result 406 states and 473 transitions. [2024-11-20 18:06:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 18:06:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-20 18:06:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:49,181 INFO L225 Difference]: With dead ends: 406 [2024-11-20 18:06:49,181 INFO L226 Difference]: Without dead ends: 330 [2024-11-20 18:06:49,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2024-11-20 18:06:49,184 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 130 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:49,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 122 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 18:06:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-20 18:06:49,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 260. [2024-11-20 18:06:49,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 214 states have (on average 1.1682242990654206) internal successors, (250), 219 states have internal predecessors, (250), 44 states have call successors, (44), 40 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:49,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 294 transitions. [2024-11-20 18:06:49,224 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 294 transitions. Word has length 38 [2024-11-20 18:06:49,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:49,225 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 294 transitions. [2024-11-20 18:06:49,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:49,225 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 294 transitions. [2024-11-20 18:06:49,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 18:06:49,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:49,226 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:49,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-20 18:06:49,430 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,SelfDestructingSolverStorable14 [2024-11-20 18:06:49,431 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:49,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash 917101277, now seen corresponding path program 2 times [2024-11-20 18:06:49,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:49,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228016697] [2024-11-20 18:06:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:49,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:49,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:49,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228016697] [2024-11-20 18:06:49,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228016697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:49,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654295629] [2024-11-20 18:06:49,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 18:06:49,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:49,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:49,581 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) [2024-11-20 18:06:49,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 18:06:49,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 18:06:49,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:06:49,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 18:06:49,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:49,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654295629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:49,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-20 18:06:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136563632] [2024-11-20 18:06:49,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:49,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-20 18:06:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-20 18:06:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-20 18:06:49,835 INFO L87 Difference]: Start difference. First operand 260 states and 294 transitions. Second operand has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:50,640 INFO L93 Difference]: Finished difference Result 582 states and 644 transitions. [2024-11-20 18:06:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-20 18:06:50,640 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-20 18:06:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:50,642 INFO L225 Difference]: With dead ends: 582 [2024-11-20 18:06:50,642 INFO L226 Difference]: Without dead ends: 580 [2024-11-20 18:06:50,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=981, Invalid=4275, Unknown=0, NotChecked=0, Total=5256 [2024-11-20 18:06:50,646 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 462 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:50,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 128 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 18:06:50,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-20 18:06:50,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 301. [2024-11-20 18:06:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 248 states have (on average 1.1733870967741935) internal successors, (291), 253 states have internal predecessors, (291), 51 states have call successors, (51), 47 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:50,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 342 transitions. [2024-11-20 18:06:50,689 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 342 transitions. Word has length 38 [2024-11-20 18:06:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:50,690 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 342 transitions. [2024-11-20 18:06:50,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 342 transitions. [2024-11-20 18:06:50,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-20 18:06:50,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:50,691 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 18:06:50,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 18:06:50,891 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,SelfDestructingSolverStorable15 [2024-11-20 18:06:50,892 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:50,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1885503363, now seen corresponding path program 3 times [2024-11-20 18:06:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:50,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497619302] [2024-11-20 18:06:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 68 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 18:06:51,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497619302] [2024-11-20 18:06:51,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497619302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:51,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554323503] [2024-11-20 18:06:51,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 18:06:51,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:51,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:51,060 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) [2024-11-20 18:06:51,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 18:06:51,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-20 18:06:51,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:06:51,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 18:06:51,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-20 18:06:51,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-20 18:06:51,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554323503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:51,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:51,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-20 18:06:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257535928] [2024-11-20 18:06:51,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:51,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 18:06:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 18:06:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-20 18:06:51,164 INFO L87 Difference]: Start difference. First operand 301 states and 342 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:51,314 INFO L93 Difference]: Finished difference Result 334 states and 380 transitions. [2024-11-20 18:06:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 18:06:51,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-20 18:06:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:51,316 INFO L225 Difference]: With dead ends: 334 [2024-11-20 18:06:51,316 INFO L226 Difference]: Without dead ends: 142 [2024-11-20 18:06:51,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-20 18:06:51,317 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:51,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 83 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 18:06:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-20 18:06:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2024-11-20 18:06:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2024-11-20 18:06:51,342 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 50 [2024-11-20 18:06:51,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:51,344 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2024-11-20 18:06:51,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:51,344 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2024-11-20 18:06:51,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 18:06:51,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:51,345 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:51,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 18:06:51,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 18:06:51,547 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:51,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1446440850, now seen corresponding path program 4 times [2024-11-20 18:06:51,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:51,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360862151] [2024-11-20 18:06:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:51,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:51,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360862151] [2024-11-20 18:06:51,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360862151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:51,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995414117] [2024-11-20 18:06:51,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 18:06:51,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:51,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:51,887 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) [2024-11-20 18:06:51,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 18:06:51,929 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 18:06:51,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:06:51,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-20 18:06:51,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:52,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:52,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995414117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:52,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:52,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2024-11-20 18:06:52,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417624866] [2024-11-20 18:06:52,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:52,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-20 18:06:52,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:52,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-20 18:06:52,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2024-11-20 18:06:52,381 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:53,759 INFO L93 Difference]: Finished difference Result 247 states and 263 transitions. [2024-11-20 18:06:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-20 18:06:53,759 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-20 18:06:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:53,761 INFO L225 Difference]: With dead ends: 247 [2024-11-20 18:06:53,761 INFO L226 Difference]: Without dead ends: 246 [2024-11-20 18:06:53,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3422 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2251, Invalid=9739, Unknown=0, NotChecked=0, Total=11990 [2024-11-20 18:06:53,765 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 692 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:53,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 91 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 18:06:53,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-20 18:06:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2024-11-20 18:06:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 198 states have (on average 1.0303030303030303) internal successors, (204), 198 states have internal predecessors, (204), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 243 transitions. [2024-11-20 18:06:53,797 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 243 transitions. Word has length 62 [2024-11-20 18:06:53,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:53,798 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 243 transitions. [2024-11-20 18:06:53,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 243 transitions. [2024-11-20 18:06:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 18:06:53,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:53,799 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2024-11-20 18:06:53,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-20 18:06:53,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:53,999 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:54,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash -349479622, now seen corresponding path program 2 times [2024-11-20 18:06:54,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:54,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130040420] [2024-11-20 18:06:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:54,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130040420] [2024-11-20 18:06:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130040420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919008123] [2024-11-20 18:06:54,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 18:06:54,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:54,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:54,499 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) [2024-11-20 18:06:54,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 18:06:54,544 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 18:06:54,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:06:54,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 18:06:54,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:54,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:55,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919008123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:55,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:55,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-11-20 18:06:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579617288] [2024-11-20 18:06:55,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:55,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-20 18:06:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-20 18:06:55,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2024-11-20 18:06:55,233 INFO L87 Difference]: Start difference. First operand 238 states and 243 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:06:56,011 INFO L93 Difference]: Finished difference Result 279 states and 286 transitions. [2024-11-20 18:06:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-20 18:06:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-20 18:06:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:06:56,013 INFO L225 Difference]: With dead ends: 279 [2024-11-20 18:06:56,013 INFO L226 Difference]: Without dead ends: 278 [2024-11-20 18:06:56,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2350 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1323, Invalid=7419, Unknown=0, NotChecked=0, Total=8742 [2024-11-20 18:06:56,014 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 416 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 18:06:56,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 168 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 18:06:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-20 18:06:56,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2024-11-20 18:06:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 223 states have (on average 1.0179372197309418) internal successors, (227), 223 states have internal predecessors, (227), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 271 transitions. [2024-11-20 18:06:56,047 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 271 transitions. Word has length 80 [2024-11-20 18:06:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:06:56,048 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 271 transitions. [2024-11-20 18:06:56,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:06:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 271 transitions. [2024-11-20 18:06:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-20 18:06:56,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:06:56,049 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:06:56,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 18:06:56,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:56,254 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:06:56,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:06:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash -168402537, now seen corresponding path program 5 times [2024-11-20 18:06:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:06:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249810062] [2024-11-20 18:06:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:06:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:06:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:06:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:57,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:06:57,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249810062] [2024-11-20 18:06:57,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249810062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:06:57,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361205561] [2024-11-20 18:06:57,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 18:06:57,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:06:57,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:06:57,117 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) [2024-11-20 18:06:57,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 18:06:57,200 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-11-20 18:06:57,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:06:57,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-20 18:06:57,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:06:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:57,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:06:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:06:58,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361205561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:06:58,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:06:58,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2024-11-20 18:06:58,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157013223] [2024-11-20 18:06:58,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:06:58,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-20 18:06:58,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:06:58,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-20 18:06:58,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=6640, Unknown=0, NotChecked=0, Total=7656 [2024-11-20 18:06:58,535 INFO L87 Difference]: Start difference. First operand 268 states and 271 transitions. Second operand has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:02,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:07:02,794 INFO L93 Difference]: Finished difference Result 496 states and 526 transitions. [2024-11-20 18:07:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2024-11-20 18:07:02,795 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-11-20 18:07:02,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:07:02,797 INFO L225 Difference]: With dead ends: 496 [2024-11-20 18:07:02,797 INFO L226 Difference]: Without dead ends: 495 [2024-11-20 18:07:02,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16416 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=9399, Invalid=41451, Unknown=0, NotChecked=0, Total=50850 [2024-11-20 18:07:02,802 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1307 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 18:07:02,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 114 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 18:07:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-20 18:07:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 484. [2024-11-20 18:07:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 403 states have (on average 1.022332506203474) internal successors, (412), 403 states have internal predecessors, (412), 80 states have call successors, (80), 80 states have call predecessors, (80), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 492 transitions. [2024-11-20 18:07:02,887 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 492 transitions. Word has length 128 [2024-11-20 18:07:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:07:02,887 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 492 transitions. [2024-11-20 18:07:02,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 492 transitions. [2024-11-20 18:07:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-20 18:07:02,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:07:02,889 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1] [2024-11-20 18:07:02,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-20 18:07:03,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:07:03,090 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:07:03,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:07:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash 734997364, now seen corresponding path program 3 times [2024-11-20 18:07:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:07:03,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371210266] [2024-11-20 18:07:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:07:03,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:07:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:07:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:04,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:07:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371210266] [2024-11-20 18:07:04,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371210266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:07:04,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784427270] [2024-11-20 18:07:04,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 18:07:04,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:07:04,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:07:04,524 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) [2024-11-20 18:07:04,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 18:07:04,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-20 18:07:04,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:07:04,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-20 18:07:04,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:07:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:04,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:07:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:06,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784427270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:07:06,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:07:06,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 111 [2024-11-20 18:07:06,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681212381] [2024-11-20 18:07:06,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:07:06,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-11-20 18:07:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:07:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-11-20 18:07:06,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1628, Invalid=10804, Unknown=0, NotChecked=0, Total=12432 [2024-11-20 18:07:06,766 INFO L87 Difference]: Start difference. First operand 484 states and 492 transitions. Second operand has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:07:09,437 INFO L93 Difference]: Finished difference Result 577 states and 591 transitions. [2024-11-20 18:07:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-20 18:07:09,437 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-20 18:07:09,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:07:09,440 INFO L225 Difference]: With dead ends: 577 [2024-11-20 18:07:09,440 INFO L226 Difference]: Without dead ends: 576 [2024-11-20 18:07:09,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11009 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5383, Invalid=31289, Unknown=0, NotChecked=0, Total=36672 [2024-11-20 18:07:09,441 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 786 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 18:07:09,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 282 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 18:07:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-20 18:07:09,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 562. [2024-11-20 18:07:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 468 states have (on average 1.017094017094017) internal successors, (476), 468 states have internal predecessors, (476), 93 states have call successors, (93), 93 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:09,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 569 transitions. [2024-11-20 18:07:09,523 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 569 transitions. Word has length 164 [2024-11-20 18:07:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:07:09,523 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 569 transitions. [2024-11-20 18:07:09,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 569 transitions. [2024-11-20 18:07:09,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-20 18:07:09,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:07:09,529 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 41, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:07:09,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 18:07:09,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:07:09,730 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:07:09,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:07:09,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1178058702, now seen corresponding path program 6 times [2024-11-20 18:07:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:07:09,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622479001] [2024-11-20 18:07:09,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:07:09,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:07:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:07:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:12,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:07:12,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622479001] [2024-11-20 18:07:12,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622479001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:07:12,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309209495] [2024-11-20 18:07:12,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 18:07:12,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:07:12,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:07:12,752 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) [2024-11-20 18:07:12,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 18:07:12,878 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-11-20 18:07:12,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:07:12,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-20 18:07:12,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:07:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:13,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:07:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:17,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309209495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:07:17,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:07:17,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 171 [2024-11-20 18:07:17,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803814789] [2024-11-20 18:07:17,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:07:17,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2024-11-20 18:07:17,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:07:17,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2024-11-20 18:07:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3786, Invalid=25626, Unknown=0, NotChecked=0, Total=29412 [2024-11-20 18:07:17,238 INFO L87 Difference]: Start difference. First operand 562 states and 569 transitions. Second operand has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:07:34,448 INFO L93 Difference]: Finished difference Result 1026 states and 1090 transitions. [2024-11-20 18:07:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 378 states. [2024-11-20 18:07:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2024-11-20 18:07:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:07:34,455 INFO L225 Difference]: With dead ends: 1026 [2024-11-20 18:07:34,455 INFO L226 Difference]: Without dead ends: 1025 [2024-11-20 18:07:34,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70334 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=39019, Invalid=173963, Unknown=0, NotChecked=0, Total=212982 [2024-11-20 18:07:34,468 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3741 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 18:07:34,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 169 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 18:07:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-11-20 18:07:34,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1006. [2024-11-20 18:07:34,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 838 states have (on average 1.0202863961813842) internal successors, (855), 838 states have internal predecessors, (855), 167 states have call successors, (167), 167 states have call predecessors, (167), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1022 transitions. [2024-11-20 18:07:34,588 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1022 transitions. Word has length 254 [2024-11-20 18:07:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:07:34,589 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1022 transitions. [2024-11-20 18:07:34,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1022 transitions. [2024-11-20 18:07:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-20 18:07:34,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:07:34,594 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 1, 1, 1, 1, 1] [2024-11-20 18:07:34,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-20 18:07:34,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:07:34,795 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:07:34,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:07:34,795 INFO L85 PathProgramCache]: Analyzing trace with hash 95073512, now seen corresponding path program 4 times [2024-11-20 18:07:34,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:07:34,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561807727] [2024-11-20 18:07:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:07:34,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:07:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 18:07:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:39,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 18:07:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561807727] [2024-11-20 18:07:39,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561807727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 18:07:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110325598] [2024-11-20 18:07:39,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 18:07:39,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:07:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 18:07:39,945 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) [2024-11-20 18:07:39,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 18:07:40,146 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 18:07:40,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 18:07:40,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-20 18:07:40,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 18:07:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:40,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 18:07:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 18:07:47,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110325598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 18:07:47,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 18:07:47,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112, 112] total 223 [2024-11-20 18:07:47,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942639462] [2024-11-20 18:07:47,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 18:07:47,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2024-11-20 18:07:47,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 18:07:47,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2024-11-20 18:07:47,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6388, Invalid=43564, Unknown=0, NotChecked=0, Total=49952 [2024-11-20 18:07:47,198 INFO L87 Difference]: Start difference. First operand 1006 states and 1022 transitions. Second operand has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:56,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 18:07:56,994 INFO L93 Difference]: Finished difference Result 1177 states and 1205 transitions. [2024-11-20 18:07:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2024-11-20 18:07:56,995 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2024-11-20 18:07:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 18:07:57,000 INFO L225 Difference]: With dead ends: 1177 [2024-11-20 18:07:57,001 INFO L226 Difference]: Without dead ends: 1176 [2024-11-20 18:07:57,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47437 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=21735, Invalid=128421, Unknown=0, NotChecked=0, Total=150156 [2024-11-20 18:07:57,009 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2275 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 18:07:57,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2275 Valid, 477 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 18:07:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-20 18:07:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1156. [2024-11-20 18:07:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 963 states have (on average 1.0145379023883696) internal successors, (977), 963 states have internal predecessors, (977), 192 states have call successors, (192), 192 states have call predecessors, (192), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1169 transitions. [2024-11-20 18:07:57,179 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1169 transitions. Word has length 332 [2024-11-20 18:07:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 18:07:57,180 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1169 transitions. [2024-11-20 18:07:57,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 18:07:57,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1169 transitions. [2024-11-20 18:07:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-20 18:07:57,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 18:07:57,186 INFO L215 NwaCegarLoop]: trace histogram [85, 85, 84, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 18:07:57,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-20 18:07:57,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 18:07:57,387 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 18:07:57,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 18:07:57,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1663037353, now seen corresponding path program 7 times [2024-11-20 18:07:57,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 18:07:57,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900553438] [2024-11-20 18:07:57,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 18:07:57,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 18:07:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat