./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/Ackermann01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/Ackermann01-1.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 380ed529f726f53285b49ce40e57404dbe066b029b8c3af7ce337366515780a5 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 11:14:17,712 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 11:14:17,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-09 11:14:17,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 11:14:17,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 11:14:17,796 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 11:14:17,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 11:14:17,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 11:14:17,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 11:14:17,800 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 11:14:17,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 11:14:17,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 11:14:17,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 11:14:17,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 11:14:17,801 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 11:14:17,802 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 11:14:17,802 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 11:14:17,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 11:14:17,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 11:14:17,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 11:14:17,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 11:14:17,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 11:14:17,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 11:14:17,805 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 11:14:17,805 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 11:14:17,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 11:14:17,805 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 11:14:17,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 11:14:17,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 11:14:17,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 11:14:17,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 11:14:17,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 11:14:17,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 11:14:17,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 11:14:17,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 11:14:17,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 11:14:17,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 11:14:17,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 11:14:17,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 11:14:17,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 11:14:17,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 11:14:17,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 380ed529f726f53285b49ce40e57404dbe066b029b8c3af7ce337366515780a5 [2024-11-09 11:14:18,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 11:14:18,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 11:14:18,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 11:14:18,057 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 11:14:18,058 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 11:14:18,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Ackermann01-1.c [2024-11-09 11:14:19,444 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 11:14:19,591 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 11:14:19,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Ackermann01-1.c [2024-11-09 11:14:19,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403b7b48d/b07dc20ffa984b7d83cf66436d69a63b/FLAGd38184c18 [2024-11-09 11:14:19,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403b7b48d/b07dc20ffa984b7d83cf66436d69a63b [2024-11-09 11:14:19,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 11:14:19,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 11:14:19,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 11:14:19,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 11:14:19,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 11:14:19,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cda8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19, skipping insertion in model container [2024-11-09 11:14:19,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,636 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 11:14:19,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 11:14:19,781 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 11:14:19,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 11:14:19,806 INFO L204 MainTranslator]: Completed translation [2024-11-09 11:14:19,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19 WrapperNode [2024-11-09 11:14:19,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 11:14:19,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 11:14:19,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 11:14:19,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 11:14:19,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,831 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2024-11-09 11:14:19,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 11:14:19,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 11:14:19,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 11:14:19,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 11:14:19,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,841 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,873 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 11:14:19,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 11:14:19,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 11:14:19,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 11:14:19,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 11:14:19,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (1/1) ... [2024-11-09 11:14:19,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 11:14:19,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:19,926 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) [2024-11-09 11:14:19,935 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 [2024-11-09 11:14:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 11:14:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 11:14:19,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 11:14:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2024-11-09 11:14:19,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2024-11-09 11:14:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 11:14:20,040 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 11:14:20,042 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 11:14:20,160 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-09 11:14:20,160 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 11:14:20,173 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 11:14:20,173 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 11:14:20,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:14:20 BoogieIcfgContainer [2024-11-09 11:14:20,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 11:14:20,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 11:14:20,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 11:14:20,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 11:14:20,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 11:14:19" (1/3) ... [2024-11-09 11:14:20,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443b89d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:14:20, skipping insertion in model container [2024-11-09 11:14:20,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:14:19" (2/3) ... [2024-11-09 11:14:20,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@443b89d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:14:20, skipping insertion in model container [2024-11-09 11:14:20,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:14:20" (3/3) ... [2024-11-09 11:14:20,184 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann01-1.c [2024-11-09 11:14:20,212 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 11:14:20,212 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-09 11:14:20,286 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 11:14:20,293 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;@7e65d0eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 11:14:20,293 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-09 11:14:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 11:14:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 11:14:20,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:20,302 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:20,303 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:20,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash 180823785, now seen corresponding path program 1 times [2024-11-09 11:14:20,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:20,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702211645] [2024-11-09 11:14:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:20,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:20,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:20,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702211645] [2024-11-09 11:14:20,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702211645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 11:14:20,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 11:14:20,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 11:14:20,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342199393] [2024-11-09 11:14:20,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 11:14:20,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 11:14:20,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 11:14:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 11:14:20,559 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.52) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2024-11-09 11:14:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:20,694 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-09 11:14:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 11:14:20,697 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 [2024-11-09 11:14:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:20,703 INFO L225 Difference]: With dead ends: 71 [2024-11-09 11:14:20,704 INFO L226 Difference]: Without dead ends: 59 [2024-11-09 11:14:20,708 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 [2024-11-09 11:14:20,714 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:20,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 119 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:14:20,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-09 11:14:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-11-09 11:14:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 42 states have internal predecessors, (52), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 11:14:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2024-11-09 11:14:20,759 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 8 [2024-11-09 11:14:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:20,772 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2024-11-09 11:14:20,772 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) [2024-11-09 11:14:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2024-11-09 11:14:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 11:14:20,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:20,772 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:20,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 11:14:20,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:20,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:20,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1310575100, now seen corresponding path program 1 times [2024-11-09 11:14:20,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:20,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737852951] [2024-11-09 11:14:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:20,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:20,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737852951] [2024-11-09 11:14:20,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737852951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 11:14:20,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 11:14:20,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 11:14:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991779868] [2024-11-09 11:14:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 11:14:20,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 11:14:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 11:14:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 11:14:20,898 INFO L87 Difference]: Start difference. First operand 51 states and 65 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) [2024-11-09 11:14:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:20,976 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2024-11-09 11:14:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 11:14:20,977 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 [2024-11-09 11:14:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:20,978 INFO L225 Difference]: With dead ends: 101 [2024-11-09 11:14:20,978 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 11:14:20,979 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 [2024-11-09 11:14:20,981 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:20,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 105 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:14:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 11:14:20,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2024-11-09 11:14:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 70 states have internal predecessors, (92), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 11:14:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 115 transitions. [2024-11-09 11:14:21,001 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 115 transitions. Word has length 9 [2024-11-09 11:14:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:21,001 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 115 transitions. [2024-11-09 11:14:21,001 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) [2024-11-09 11:14:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 115 transitions. [2024-11-09 11:14:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 11:14:21,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:21,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:21,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 11:14:21,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:21,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:21,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1310570103, now seen corresponding path program 1 times [2024-11-09 11:14:21,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:21,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373167146] [2024-11-09 11:14:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:21,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:21,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373167146] [2024-11-09 11:14:21,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373167146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 11:14:21,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 11:14:21,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 11:14:21,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431946517] [2024-11-09 11:14:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 11:14:21,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 11:14:21,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:21,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 11:14:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 11:14:21,070 INFO L87 Difference]: Start difference. First operand 85 states and 115 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 11:14:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:21,139 INFO L93 Difference]: Finished difference Result 118 states and 157 transitions. [2024-11-09 11:14:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 11:14:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 11:14:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:21,141 INFO L225 Difference]: With dead ends: 118 [2024-11-09 11:14:21,141 INFO L226 Difference]: Without dead ends: 114 [2024-11-09 11:14:21,142 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 [2024-11-09 11:14:21,142 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:21,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 97 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:14:21,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-09 11:14:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2024-11-09 11:14:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.445945945945946) internal successors, (107), 83 states have internal predecessors, (107), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 11:14:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 136 transitions. [2024-11-09 11:14:21,154 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 136 transitions. Word has length 9 [2024-11-09 11:14:21,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:21,154 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 136 transitions. [2024-11-09 11:14:21,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 11:14:21,154 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 136 transitions. [2024-11-09 11:14:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 11:14:21,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:21,155 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:21,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 11:14:21,155 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ackermannErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:21,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1973122508, now seen corresponding path program 1 times [2024-11-09 11:14:21,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:21,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407318625] [2024-11-09 11:14:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:21,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:21,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407318625] [2024-11-09 11:14:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407318625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 11:14:21,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 11:14:21,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 11:14:21,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123114160] [2024-11-09 11:14:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 11:14:21,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 11:14:21,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:21,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 11:14:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 11:14:21,192 INFO L87 Difference]: Start difference. First operand 102 states and 136 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-09 11:14:21,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:21,247 INFO L93 Difference]: Finished difference Result 110 states and 153 transitions. [2024-11-09 11:14:21,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 11:14:21,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10 [2024-11-09 11:14:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:21,253 INFO L225 Difference]: With dead ends: 110 [2024-11-09 11:14:21,253 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 11:14:21,253 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 [2024-11-09 11:14:21,254 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:21,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 11:14:21,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 11:14:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2024-11-09 11:14:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 81 states have internal predecessors, (97), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 11:14:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2024-11-09 11:14:21,280 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 10 [2024-11-09 11:14:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:21,280 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2024-11-09 11:14:21,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-09 11:14:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2024-11-09 11:14:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 11:14:21,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:21,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:21,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 11:14:21,281 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:21,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:21,282 INFO L85 PathProgramCache]: Analyzing trace with hash -612398535, now seen corresponding path program 1 times [2024-11-09 11:14:21,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:21,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608476212] [2024-11-09 11:14:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:21,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:21,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:21,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608476212] [2024-11-09 11:14:21,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608476212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 11:14:21,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 11:14:21,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 11:14:21,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845678239] [2024-11-09 11:14:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 11:14:21,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 11:14:21,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:21,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 11:14:21,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 11:14:21,346 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 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) [2024-11-09 11:14:21,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:21,400 INFO L93 Difference]: Finished difference Result 170 states and 225 transitions. [2024-11-09 11:14:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 11:14:21,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 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 [2024-11-09 11:14:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:21,403 INFO L225 Difference]: With dead ends: 170 [2024-11-09 11:14:21,403 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 11:14:21,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 11:14:21,407 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:21,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 11:14:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 11:14:21,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2024-11-09 11:14:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 71 states have (on average 1.295774647887324) internal successors, (92), 78 states have internal predecessors, (92), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 11:14:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2024-11-09 11:14:21,434 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 15 [2024-11-09 11:14:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:21,434 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2024-11-09 11:14:21,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 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) [2024-11-09 11:14:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2024-11-09 11:14:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 11:14:21,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:21,435 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:21,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 11:14:21,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:21,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -612398311, now seen corresponding path program 1 times [2024-11-09 11:14:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760572372] [2024-11-09 11:14:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:21,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:21,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:21,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760572372] [2024-11-09 11:14:21,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760572372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:21,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328766695] [2024-11-09 11:14:21,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:21,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:21,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:21,512 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) [2024-11-09 11:14:21,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 11:14:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:21,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 11:14:21,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:21,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:21,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328766695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:21,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:21,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 11:14:21,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29711655] [2024-11-09 11:14:21,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:21,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 11:14:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 11:14:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 11:14:21,694 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 11:14:21,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:21,905 INFO L93 Difference]: Finished difference Result 276 states and 359 transitions. [2024-11-09 11:14:21,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 11:14:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 11:14:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:21,908 INFO L225 Difference]: With dead ends: 276 [2024-11-09 11:14:21,908 INFO L226 Difference]: Without dead ends: 274 [2024-11-09 11:14:21,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-09 11:14:21,909 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 215 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:21,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 206 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:14:21,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-09 11:14:21,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 236. [2024-11-09 11:14:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 182 states have (on average 1.2637362637362637) internal successors, (230), 189 states have internal predecessors, (230), 36 states have call successors, (36), 13 states have call predecessors, (36), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-09 11:14:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 299 transitions. [2024-11-09 11:14:21,936 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 299 transitions. Word has length 15 [2024-11-09 11:14:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:21,936 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 299 transitions. [2024-11-09 11:14:21,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 11:14:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 299 transitions. [2024-11-09 11:14:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 11:14:21,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:21,938 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:21,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 11:14:22,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 11:14:22,143 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:22,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:22,143 INFO L85 PathProgramCache]: Analyzing trace with hash -600892461, now seen corresponding path program 1 times [2024-11-09 11:14:22,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067207737] [2024-11-09 11:14:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:22,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:22,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:22,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067207737] [2024-11-09 11:14:22,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067207737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:22,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005436526] [2024-11-09 11:14:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:22,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:22,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:22,218 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) [2024-11-09 11:14:22,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 11:14:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:22,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 11:14:22,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:22,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005436526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:22,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 11:14:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574654226] [2024-11-09 11:14:22,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:22,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 11:14:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 11:14:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 11:14:22,357 INFO L87 Difference]: Start difference. First operand 236 states and 299 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) 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) [2024-11-09 11:14:22,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:22,584 INFO L93 Difference]: Finished difference Result 498 states and 669 transitions. [2024-11-09 11:14:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 11:14:22,585 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) 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 16 [2024-11-09 11:14:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:22,589 INFO L225 Difference]: With dead ends: 498 [2024-11-09 11:14:22,589 INFO L226 Difference]: Without dead ends: 496 [2024-11-09 11:14:22,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-09 11:14:22,590 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 142 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:22,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 162 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:14:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-09 11:14:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 445. [2024-11-09 11:14:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 347 states have (on average 1.2276657060518732) internal successors, (426), 354 states have internal predecessors, (426), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-09 11:14:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 561 transitions. [2024-11-09 11:14:22,639 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 561 transitions. Word has length 16 [2024-11-09 11:14:22,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:22,642 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 561 transitions. [2024-11-09 11:14:22,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) 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) [2024-11-09 11:14:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 561 transitions. [2024-11-09 11:14:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 11:14:22,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:22,643 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:22,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 11:14:22,843 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,SelfDestructingSolverStorable6 [2024-11-09 11:14:22,844 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:22,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:22,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1979487198, now seen corresponding path program 1 times [2024-11-09 11:14:22,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:22,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585269732] [2024-11-09 11:14:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:22,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:22,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 11:14:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585269732] [2024-11-09 11:14:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585269732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448582671] [2024-11-09 11:14:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:22,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:22,954 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) [2024-11-09 11:14:22,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 11:14:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:22,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 11:14:22,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 11:14:23,045 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 11:14:23,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448582671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 11:14:23,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 11:14:23,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-09 11:14:23,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604634441] [2024-11-09 11:14:23,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 11:14:23,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 11:14:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:23,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 11:14:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-09 11:14:23,047 INFO L87 Difference]: Start difference. First operand 445 states and 561 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 11:14:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:23,195 INFO L93 Difference]: Finished difference Result 494 states and 650 transitions. [2024-11-09 11:14:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 11:14:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-09 11:14:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:23,198 INFO L225 Difference]: With dead ends: 494 [2024-11-09 11:14:23,198 INFO L226 Difference]: Without dead ends: 493 [2024-11-09 11:14:23,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-09 11:14:23,199 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:23,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 139 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:14:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-09 11:14:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 444. [2024-11-09 11:14:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 347 states have (on average 1.2161383285302594) internal successors, (422), 353 states have internal predecessors, (422), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-09 11:14:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 557 transitions. [2024-11-09 11:14:23,229 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 557 transitions. Word has length 24 [2024-11-09 11:14:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:23,229 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 557 transitions. [2024-11-09 11:14:23,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 11:14:23,230 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 557 transitions. [2024-11-09 11:14:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 11:14:23,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:23,230 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:23,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 11:14:23,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:23,432 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:23,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1234561058, now seen corresponding path program 1 times [2024-11-09 11:14:23,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:23,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737408372] [2024-11-09 11:14:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:23,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:23,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 11:14:23,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:23,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737408372] [2024-11-09 11:14:23,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737408372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:23,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080512295] [2024-11-09 11:14:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:23,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:23,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:23,508 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) [2024-11-09 11:14:23,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 11:14:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:23,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 11:14:23,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 11:14:23,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 11:14:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080512295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:23,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:23,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 11:14:23,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451852702] [2024-11-09 11:14:23,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:23,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 11:14:23,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:23,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 11:14:23,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-09 11:14:23,742 INFO L87 Difference]: Start difference. First operand 444 states and 557 transitions. Second operand has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 11:14:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:24,064 INFO L93 Difference]: Finished difference Result 807 states and 1179 transitions. [2024-11-09 11:14:24,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 11:14:24,065 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-09 11:14:24,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:24,071 INFO L225 Difference]: With dead ends: 807 [2024-11-09 11:14:24,072 INFO L226 Difference]: Without dead ends: 805 [2024-11-09 11:14:24,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-09 11:14:24,074 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 123 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:24,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 177 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 11:14:24,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-09 11:14:24,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 641. [2024-11-09 11:14:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 477 states have (on average 1.2033542976939204) internal successors, (574), 505 states have internal predecessors, (574), 107 states have call successors, (107), 31 states have call predecessors, (107), 52 states have return successors, (194), 104 states have call predecessors, (194), 103 states have call successors, (194) [2024-11-09 11:14:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 875 transitions. [2024-11-09 11:14:24,141 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 875 transitions. Word has length 25 [2024-11-09 11:14:24,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:24,143 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 875 transitions. [2024-11-09 11:14:24,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 13 states have internal predecessors, (41), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 11:14:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 875 transitions. [2024-11-09 11:14:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 11:14:24,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:24,144 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:24,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 11:14:24,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:24,349 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:24,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2137182870, now seen corresponding path program 1 times [2024-11-09 11:14:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:24,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396861701] [2024-11-09 11:14:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:24,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:24,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396861701] [2024-11-09 11:14:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396861701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:24,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150595573] [2024-11-09 11:14:24,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:24,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:24,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:24,431 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) [2024-11-09 11:14:24,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 11:14:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:24,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 11:14:24,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:24,491 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:24,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150595573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:24,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:24,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 11:14:24,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381338271] [2024-11-09 11:14:24,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:24,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 11:14:24,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 11:14:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-09 11:14:24,571 INFO L87 Difference]: Start difference. First operand 641 states and 875 transitions. Second operand has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 11:14:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:24,890 INFO L93 Difference]: Finished difference Result 997 states and 1430 transitions. [2024-11-09 11:14:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 11:14:24,891 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 11:14:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:24,895 INFO L225 Difference]: With dead ends: 997 [2024-11-09 11:14:24,895 INFO L226 Difference]: Without dead ends: 996 [2024-11-09 11:14:24,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-11-09 11:14:24,896 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 184 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:24,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 292 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 11:14:24,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-11-09 11:14:24,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 917. [2024-11-09 11:14:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 681 states have (on average 1.171806167400881) internal successors, (798), 721 states have internal predecessors, (798), 155 states have call successors, (155), 43 states have call predecessors, (155), 76 states have return successors, (278), 152 states have call predecessors, (278), 151 states have call successors, (278) [2024-11-09 11:14:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1231 transitions. [2024-11-09 11:14:24,955 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1231 transitions. Word has length 27 [2024-11-09 11:14:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:24,955 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1231 transitions. [2024-11-09 11:14:24,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 10 states have internal predecessors, (45), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 11:14:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1231 transitions. [2024-11-09 11:14:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 11:14:24,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:24,956 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:24,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 11:14:25,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 11:14:25,157 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:25,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1007222953, now seen corresponding path program 1 times [2024-11-09 11:14:25,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:25,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162740674] [2024-11-09 11:14:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:25,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 11:14:25,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:25,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162740674] [2024-11-09 11:14:25,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162740674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:25,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949511210] [2024-11-09 11:14:25,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:25,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:25,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:25,235 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) [2024-11-09 11:14:25,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 11:14:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:25,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 11:14:25,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 11:14:25,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 11:14:25,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949511210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:25,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:25,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 11:14:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570509201] [2024-11-09 11:14:25,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:25,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 11:14:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 11:14:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-09 11:14:25,417 INFO L87 Difference]: Start difference. First operand 917 states and 1231 transitions. Second operand has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 11:14:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:25,743 INFO L93 Difference]: Finished difference Result 1478 states and 2205 transitions. [2024-11-09 11:14:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 11:14:25,743 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-09 11:14:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:25,750 INFO L225 Difference]: With dead ends: 1478 [2024-11-09 11:14:25,750 INFO L226 Difference]: Without dead ends: 1473 [2024-11-09 11:14:25,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-09 11:14:25,752 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 85 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:25,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 163 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 11:14:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-09 11:14:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1080. [2024-11-09 11:14:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 804 states have (on average 1.1703980099502487) internal successors, (941), 853 states have internal predecessors, (941), 175 states have call successors, (175), 53 states have call predecessors, (175), 96 states have return successors, (415), 173 states have call predecessors, (415), 170 states have call successors, (415) [2024-11-09 11:14:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1531 transitions. [2024-11-09 11:14:25,834 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1531 transitions. Word has length 27 [2024-11-09 11:14:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:25,835 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1531 transitions. [2024-11-09 11:14:25,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 13 states have internal predecessors, (37), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 11:14:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1531 transitions. [2024-11-09 11:14:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 11:14:25,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:25,837 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:25,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 11:14:26,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:26,037 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:26,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1878013265, now seen corresponding path program 1 times [2024-11-09 11:14:26,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:26,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936145156] [2024-11-09 11:14:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:26,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:26,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:26,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:14:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:26,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:26,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936145156] [2024-11-09 11:14:26,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936145156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:26,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430068079] [2024-11-09 11:14:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:26,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:26,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:26,134 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) [2024-11-09 11:14:26,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 11:14:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:26,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 11:14:26,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:26,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430068079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:26,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:26,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 11:14:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393253784] [2024-11-09 11:14:26,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:26,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 11:14:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 11:14:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-09 11:14:26,380 INFO L87 Difference]: Start difference. First operand 1080 states and 1531 transitions. Second operand has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 11:14:26,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:26,938 INFO L93 Difference]: Finished difference Result 1883 states and 3145 transitions. [2024-11-09 11:14:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 11:14:26,939 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2024-11-09 11:14:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:26,947 INFO L225 Difference]: With dead ends: 1883 [2024-11-09 11:14:26,948 INFO L226 Difference]: Without dead ends: 1869 [2024-11-09 11:14:26,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-11-09 11:14:26,949 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 108 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:26,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 179 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 11:14:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2024-11-09 11:14:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1577. [2024-11-09 11:14:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1149 states have (on average 1.162750217580505) internal successors, (1336), 1210 states have internal predecessors, (1336), 271 states have call successors, (271), 73 states have call predecessors, (271), 152 states have return successors, (774), 293 states have call predecessors, (774), 263 states have call successors, (774) [2024-11-09 11:14:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2381 transitions. [2024-11-09 11:14:27,078 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2381 transitions. Word has length 34 [2024-11-09 11:14:27,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:27,079 INFO L471 AbstractCegarLoop]: Abstraction has 1577 states and 2381 transitions. [2024-11-09 11:14:27,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 14 states have internal predecessors, (43), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 11:14:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2381 transitions. [2024-11-09 11:14:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 11:14:27,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:27,103 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:27,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 11:14:27,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:27,304 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:27,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash 889503256, now seen corresponding path program 1 times [2024-11-09 11:14:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:27,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950295525] [2024-11-09 11:14:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:27,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:27,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:14:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:27,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:27,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950295525] [2024-11-09 11:14:27,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950295525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:27,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741530419] [2024-11-09 11:14:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:27,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:27,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:27,469 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) [2024-11-09 11:14:27,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 11:14:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:27,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 11:14:27,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:27,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741530419] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:27,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 11:14:27,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 17 [2024-11-09 11:14:27,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528430721] [2024-11-09 11:14:27,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 11:14:27,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 11:14:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 11:14:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-09 11:14:27,706 INFO L87 Difference]: Start difference. First operand 1577 states and 2381 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 11:14:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:27,982 INFO L93 Difference]: Finished difference Result 1784 states and 2841 transitions. [2024-11-09 11:14:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 11:14:27,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-11-09 11:14:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:27,991 INFO L225 Difference]: With dead ends: 1784 [2024-11-09 11:14:27,991 INFO L226 Difference]: Without dead ends: 1783 [2024-11-09 11:14:27,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-11-09 11:14:27,992 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:27,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 206 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:14:27,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-11-09 11:14:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1614. [2024-11-09 11:14:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1173 states have (on average 1.1568627450980393) internal successors, (1357), 1231 states have internal predecessors, (1357), 287 states have call successors, (287), 73 states have call predecessors, (287), 149 states have return successors, (703), 309 states have call predecessors, (703), 279 states have call successors, (703) [2024-11-09 11:14:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2347 transitions. [2024-11-09 11:14:28,137 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2347 transitions. Word has length 36 [2024-11-09 11:14:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:28,137 INFO L471 AbstractCegarLoop]: Abstraction has 1614 states and 2347 transitions. [2024-11-09 11:14:28,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 11:14:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2347 transitions. [2024-11-09 11:14:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 11:14:28,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:28,139 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:28,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 11:14:28,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 11:14:28,339 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:28,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash 791091541, now seen corresponding path program 2 times [2024-11-09 11:14:28,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818896221] [2024-11-09 11:14:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:28,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 11:14:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 11:14:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818896221] [2024-11-09 11:14:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818896221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218354231] [2024-11-09 11:14:28,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 11:14:28,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:28,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:28,440 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) [2024-11-09 11:14:28,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 11:14:28,477 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 11:14:28,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 11:14:28,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 11:14:28,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 11:14:28,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 11:14:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218354231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:28,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:28,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2024-11-09 11:14:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98055535] [2024-11-09 11:14:28,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:28,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 11:14:28,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 11:14:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-09 11:14:28,707 INFO L87 Difference]: Start difference. First operand 1614 states and 2347 transitions. Second operand has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 11:14:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:29,522 INFO L93 Difference]: Finished difference Result 3197 states and 5554 transitions. [2024-11-09 11:14:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 11:14:29,523 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2024-11-09 11:14:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:29,539 INFO L225 Difference]: With dead ends: 3197 [2024-11-09 11:14:29,540 INFO L226 Difference]: Without dead ends: 3196 [2024-11-09 11:14:29,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=491, Invalid=1765, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 11:14:29,543 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 380 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:29,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 194 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 11:14:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3196 states. [2024-11-09 11:14:29,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3196 to 2201. [2024-11-09 11:14:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1612 states have (on average 1.1557071960297767) internal successors, (1863), 1689 states have internal predecessors, (1863), 372 states have call successors, (372), 107 states have call predecessors, (372), 212 states have return successors, (1147), 404 states have call predecessors, (1147), 364 states have call successors, (1147) [2024-11-09 11:14:29,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3382 transitions. [2024-11-09 11:14:29,839 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3382 transitions. Word has length 43 [2024-11-09 11:14:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:29,839 INFO L471 AbstractCegarLoop]: Abstraction has 2201 states and 3382 transitions. [2024-11-09 11:14:29,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.05) internal successors, (61), 17 states have internal predecessors, (61), 8 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 11:14:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3382 transitions. [2024-11-09 11:14:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 11:14:29,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:29,841 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:29,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 11:14:30,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 11:14:30,042 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:30,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash -328093970, now seen corresponding path program 2 times [2024-11-09 11:14:30,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790990018] [2024-11-09 11:14:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:30,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:30,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:30,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:14:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:30,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790990018] [2024-11-09 11:14:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790990018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:30,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013867941] [2024-11-09 11:14:30,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 11:14:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:30,207 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) [2024-11-09 11:14:30,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 11:14:30,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 11:14:30,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 11:14:30,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 11:14:30,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:30,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:14:30,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013867941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:30,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:30,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2024-11-09 11:14:30,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500513593] [2024-11-09 11:14:30,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:30,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 11:14:30,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 11:14:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-09 11:14:30,522 INFO L87 Difference]: Start difference. First operand 2201 states and 3382 transitions. Second operand has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 11:14:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:31,594 INFO L93 Difference]: Finished difference Result 4455 states and 8209 transitions. [2024-11-09 11:14:31,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 11:14:31,595 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 44 [2024-11-09 11:14:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:31,614 INFO L225 Difference]: With dead ends: 4455 [2024-11-09 11:14:31,614 INFO L226 Difference]: Without dead ends: 3140 [2024-11-09 11:14:31,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=501, Invalid=2049, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 11:14:31,629 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 178 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:31,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 338 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 11:14:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2024-11-09 11:14:31,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2494. [2024-11-09 11:14:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2494 states, 1823 states have (on average 1.1492046077893583) internal successors, (2095), 1909 states have internal predecessors, (2095), 428 states have call successors, (428), 122 states have call predecessors, (428), 238 states have return successors, (1243), 462 states have call predecessors, (1243), 420 states have call successors, (1243) [2024-11-09 11:14:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3766 transitions. [2024-11-09 11:14:31,927 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3766 transitions. Word has length 44 [2024-11-09 11:14:31,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:31,928 INFO L471 AbstractCegarLoop]: Abstraction has 2494 states and 3766 transitions. [2024-11-09 11:14:31,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 16 states have internal predecessors, (61), 5 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 11:14:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3766 transitions. [2024-11-09 11:14:31,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 11:14:31,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:31,930 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:31,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 11:14:32,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 11:14:32,131 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:32,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:32,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1781931564, now seen corresponding path program 1 times [2024-11-09 11:14:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:32,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092893636] [2024-11-09 11:14:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:32,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:32,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:32,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:14:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:32,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 11:14:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 11:14:32,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:32,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092893636] [2024-11-09 11:14:32,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092893636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:32,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776808765] [2024-11-09 11:14:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:32,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:32,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:32,191 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) [2024-11-09 11:14:32,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 11:14:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:32,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 11:14:32,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 11:14:32,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 11:14:32,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776808765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:32,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:32,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2024-11-09 11:14:32,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353243814] [2024-11-09 11:14:32,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:32,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 11:14:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:32,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 11:14:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-09 11:14:32,377 INFO L87 Difference]: Start difference. First operand 2494 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 11:14:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:32,724 INFO L93 Difference]: Finished difference Result 3517 states and 5520 transitions. [2024-11-09 11:14:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 11:14:32,724 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2024-11-09 11:14:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:32,739 INFO L225 Difference]: With dead ends: 3517 [2024-11-09 11:14:32,739 INFO L226 Difference]: Without dead ends: 1211 [2024-11-09 11:14:32,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-09 11:14:32,767 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 71 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:32,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 107 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:14:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2024-11-09 11:14:33,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1182. [2024-11-09 11:14:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 881 states have (on average 1.112372304199773) internal successors, (980), 905 states have internal predecessors, (980), 212 states have call successors, (212), 67 states have call predecessors, (212), 85 states have return successors, (333), 209 states have call predecessors, (333), 208 states have call successors, (333) [2024-11-09 11:14:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1525 transitions. [2024-11-09 11:14:33,082 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1525 transitions. Word has length 44 [2024-11-09 11:14:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:33,082 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1525 transitions. [2024-11-09 11:14:33,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-09 11:14:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1525 transitions. [2024-11-09 11:14:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 11:14:33,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:33,085 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:33,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 11:14:33,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 11:14:33,286 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:33,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash -603852535, now seen corresponding path program 1 times [2024-11-09 11:14:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571294935] [2024-11-09 11:14:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:33,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:33,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:14:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:33,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:14:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:33,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 11:14:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 11:14:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:33,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571294935] [2024-11-09 11:14:33,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571294935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:33,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439198402] [2024-11-09 11:14:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:33,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:33,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:33,539 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) [2024-11-09 11:14:33,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 11:14:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:33,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 11:14:33,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 11:14:33,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 11:14:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439198402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:34,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:34,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-11-09 11:14:34,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106275335] [2024-11-09 11:14:34,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:34,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 11:14:34,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:34,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 11:14:34,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2024-11-09 11:14:34,051 INFO L87 Difference]: Start difference. First operand 1182 states and 1525 transitions. Second operand has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 11:14:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:35,311 INFO L93 Difference]: Finished difference Result 3167 states and 5904 transitions. [2024-11-09 11:14:35,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-09 11:14:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 53 [2024-11-09 11:14:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:35,332 INFO L225 Difference]: With dead ends: 3167 [2024-11-09 11:14:35,332 INFO L226 Difference]: Without dead ends: 3161 [2024-11-09 11:14:35,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1079, Invalid=5083, Unknown=0, NotChecked=0, Total=6162 [2024-11-09 11:14:35,338 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 141 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:35,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 255 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 11:14:35,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2024-11-09 11:14:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2249. [2024-11-09 11:14:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 1552 states have (on average 1.0869845360824741) internal successors, (1687), 1580 states have internal predecessors, (1687), 429 states have call successors, (429), 81 states have call predecessors, (429), 264 states have return successors, (2579), 587 states have call predecessors, (2579), 423 states have call successors, (2579) [2024-11-09 11:14:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 4695 transitions. [2024-11-09 11:14:35,676 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 4695 transitions. Word has length 53 [2024-11-09 11:14:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:35,676 INFO L471 AbstractCegarLoop]: Abstraction has 2249 states and 4695 transitions. [2024-11-09 11:14:35,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.230769230769231) internal successors, (58), 21 states have internal predecessors, (58), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 11:14:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 4695 transitions. [2024-11-09 11:14:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 11:14:35,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:35,678 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:35,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 11:14:35,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 11:14:35,880 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ackermannErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:35,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash 38844242, now seen corresponding path program 1 times [2024-11-09 11:14:35,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:35,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343818949] [2024-11-09 11:14:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 11:14:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343818949] [2024-11-09 11:14:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343818949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879531598] [2024-11-09 11:14:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:36,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:36,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:36,006 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) [2024-11-09 11:14:36,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 11:14:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:36,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 11:14:36,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 11:14:36,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 11:14:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879531598] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:36,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:36,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-09 11:14:36,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420225271] [2024-11-09 11:14:36,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:36,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 11:14:36,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 11:14:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-11-09 11:14:36,278 INFO L87 Difference]: Start difference. First operand 2249 states and 4695 transitions. Second operand has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 11:14:37,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:37,510 INFO L93 Difference]: Finished difference Result 6168 states and 13112 transitions. [2024-11-09 11:14:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 11:14:37,515 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-09 11:14:37,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:37,609 INFO L225 Difference]: With dead ends: 6168 [2024-11-09 11:14:37,609 INFO L226 Difference]: Without dead ends: 6167 [2024-11-09 11:14:37,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 11:14:37,617 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 507 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:37,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 373 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 11:14:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2024-11-09 11:14:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 6083. [2024-11-09 11:14:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 4222 states have (on average 1.0888204642349597) internal successors, (4597), 4304 states have internal predecessors, (4597), 1161 states have call successors, (1161), 231 states have call predecessors, (1161), 696 states have return successors, (6995), 1547 states have call predecessors, (6995), 1155 states have call successors, (6995) [2024-11-09 11:14:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 12753 transitions. [2024-11-09 11:14:38,451 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 12753 transitions. Word has length 57 [2024-11-09 11:14:38,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:38,451 INFO L471 AbstractCegarLoop]: Abstraction has 6083 states and 12753 transitions. [2024-11-09 11:14:38,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (16), 10 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 11:14:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 12753 transitions. [2024-11-09 11:14:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 11:14:38,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:38,453 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:38,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 11:14:38,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 11:14:38,658 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:38,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash -476681264, now seen corresponding path program 1 times [2024-11-09 11:14:38,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:38,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289610424] [2024-11-09 11:14:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:38,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:38,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:14:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:38,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:14:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:38,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:14:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:38,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 11:14:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 11:14:38,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:38,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289610424] [2024-11-09 11:14:38,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289610424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:38,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071291868] [2024-11-09 11:14:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:38,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:38,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:38,856 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) [2024-11-09 11:14:38,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 11:14:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:38,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 11:14:38,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 11:14:38,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 11:14:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071291868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:39,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:39,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 13] total 26 [2024-11-09 11:14:39,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302927995] [2024-11-09 11:14:39,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:39,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 11:14:39,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 11:14:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-09 11:14:39,318 INFO L87 Difference]: Start difference. First operand 6083 states and 12753 transitions. Second operand has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 11:14:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:43,142 INFO L93 Difference]: Finished difference Result 24358 states and 94287 transitions. [2024-11-09 11:14:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-09 11:14:43,143 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2024-11-09 11:14:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:43,345 INFO L225 Difference]: With dead ends: 24358 [2024-11-09 11:14:43,345 INFO L226 Difference]: Without dead ends: 19150 [2024-11-09 11:14:43,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1184, Invalid=4822, Unknown=0, NotChecked=0, Total=6006 [2024-11-09 11:14:43,466 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 131 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:43,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 395 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 11:14:43,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19150 states. [2024-11-09 11:14:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19150 to 13376. [2024-11-09 11:14:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13376 states, 8766 states have (on average 1.0571526351813827) internal successors, (9267), 8809 states have internal predecessors, (9267), 2669 states have call successors, (2669), 308 states have call predecessors, (2669), 1937 states have return successors, (37183), 4258 states have call predecessors, (37183), 2658 states have call successors, (37183) [2024-11-09 11:14:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13376 states to 13376 states and 49119 transitions. [2024-11-09 11:14:47,221 INFO L78 Accepts]: Start accepts. Automaton has 13376 states and 49119 transitions. Word has length 55 [2024-11-09 11:14:47,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:47,222 INFO L471 AbstractCegarLoop]: Abstraction has 13376 states and 49119 transitions. [2024-11-09 11:14:47,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 21 states have internal predecessors, (62), 5 states have call successors, (7), 3 states have call predecessors, (7), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 11:14:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 13376 states and 49119 transitions. [2024-11-09 11:14:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 11:14:47,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:47,224 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:47,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 11:14:47,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:47,425 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:47,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:47,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1608770754, now seen corresponding path program 2 times [2024-11-09 11:14:47,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:47,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153075504] [2024-11-09 11:14:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:47,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:47,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:47,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153075504] [2024-11-09 11:14:47,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153075504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:47,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616117284] [2024-11-09 11:14:47,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 11:14:47,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:47,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:47,599 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) [2024-11-09 11:14:47,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 11:14:47,651 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 11:14:47,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 11:14:47,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 11:14:47,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:47,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 11:14:47,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616117284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:47,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:47,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-09 11:14:47,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204074395] [2024-11-09 11:14:47,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:47,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 11:14:47,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:47,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 11:14:47,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2024-11-09 11:14:47,982 INFO L87 Difference]: Start difference. First operand 13376 states and 49119 transitions. Second operand has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 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) [2024-11-09 11:14:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:14:51,711 INFO L93 Difference]: Finished difference Result 20225 states and 73221 transitions. [2024-11-09 11:14:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 11:14:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-09 11:14:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:14:51,935 INFO L225 Difference]: With dead ends: 20225 [2024-11-09 11:14:51,935 INFO L226 Difference]: Without dead ends: 20224 [2024-11-09 11:14:51,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=573, Invalid=1497, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 11:14:51,954 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 459 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 11:14:51,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 472 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 11:14:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20224 states. [2024-11-09 11:14:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20224 to 19840. [2024-11-09 11:14:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19840 states, 13022 states have (on average 1.0495315619720473) internal successors, (13667), 13129 states have internal predecessors, (13667), 3917 states have call successors, (3917), 452 states have call predecessors, (3917), 2897 states have return successors, (53631), 6258 states have call predecessors, (53631), 3906 states have call successors, (53631) [2024-11-09 11:14:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19840 states to 19840 states and 71215 transitions. [2024-11-09 11:14:57,019 INFO L78 Accepts]: Start accepts. Automaton has 19840 states and 71215 transitions. Word has length 59 [2024-11-09 11:14:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:14:57,019 INFO L471 AbstractCegarLoop]: Abstraction has 19840 states and 71215 transitions. [2024-11-09 11:14:57,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 18 states have internal predecessors, (101), 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) [2024-11-09 11:14:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 19840 states and 71215 transitions. [2024-11-09 11:14:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 11:14:57,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:14:57,022 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:14:57,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 11:14:57,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:57,223 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:14:57,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:14:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash -295397423, now seen corresponding path program 2 times [2024-11-09 11:14:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:14:57,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98713541] [2024-11-09 11:14:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:14:57,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:14:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:57,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 11:14:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:57,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:14:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:57,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:14:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:57,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:14:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:57,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 11:14:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:14:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 86 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 11:14:57,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:14:57,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98713541] [2024-11-09 11:14:57,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98713541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:14:57,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971817432] [2024-11-09 11:14:57,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 11:14:57,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:14:57,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:14:57,587 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) [2024-11-09 11:14:57,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 11:14:57,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 11:14:57,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 11:14:57,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 11:14:57,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:14:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 75 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-09 11:14:57,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:14:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 94 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-09 11:14:58,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971817432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:14:58,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:14:58,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 32 [2024-11-09 11:14:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875517146] [2024-11-09 11:14:58,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:14:58,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 11:14:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:14:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 11:14:58,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 11:14:58,394 INFO L87 Difference]: Start difference. First operand 19840 states and 71215 transitions. Second operand has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 11:15:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:15:01,725 INFO L93 Difference]: Finished difference Result 30265 states and 111648 transitions. [2024-11-09 11:15:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 11:15:01,725 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) Word has length 80 [2024-11-09 11:15:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:15:01,797 INFO L225 Difference]: With dead ends: 30265 [2024-11-09 11:15:01,797 INFO L226 Difference]: Without dead ends: 12260 [2024-11-09 11:15:02,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 11:15:02,060 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 141 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 11:15:02,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 401 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 11:15:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12260 states. [2024-11-09 11:15:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12260 to 11692. [2024-11-09 11:15:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11692 states, 8105 states have (on average 1.073781616286243) internal successors, (8703), 8384 states have internal predecessors, (8703), 2284 states have call successors, (2284), 476 states have call predecessors, (2284), 1299 states have return successors, (7789), 2831 states have call predecessors, (7789), 2276 states have call successors, (7789) [2024-11-09 11:15:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11692 states to 11692 states and 18776 transitions. [2024-11-09 11:15:03,983 INFO L78 Accepts]: Start accepts. Automaton has 11692 states and 18776 transitions. Word has length 80 [2024-11-09 11:15:03,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:15:03,983 INFO L471 AbstractCegarLoop]: Abstraction has 11692 states and 18776 transitions. [2024-11-09 11:15:03,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.4375) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 11:15:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 11692 states and 18776 transitions. [2024-11-09 11:15:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 11:15:03,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:15:03,989 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 11:15:04,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 11:15:04,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:15:04,194 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ackermannErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:15:04,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:15:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1699922576, now seen corresponding path program 3 times [2024-11-09 11:15:04,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:15:04,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303077148] [2024-11-09 11:15:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:15:04,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:15:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:04,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:15:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:04,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:15:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 62 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:15:04,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:15:04,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303077148] [2024-11-09 11:15:04,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303077148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:15:04,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703193578] [2024-11-09 11:15:04,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 11:15:04,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:15:04,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:15:04,376 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) [2024-11-09 11:15:04,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 11:15:04,431 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-09 11:15:04,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 11:15:04,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 11:15:04,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:15:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:15:04,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:15:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 64 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 11:15:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703193578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:15:04,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:15:04,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-09 11:15:04,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90616506] [2024-11-09 11:15:04,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:15:04,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 11:15:04,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:15:04,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 11:15:04,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 11:15:04,794 INFO L87 Difference]: Start difference. First operand 11692 states and 18776 transitions. Second operand has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 11:15:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:15:06,900 INFO L93 Difference]: Finished difference Result 12447 states and 19918 transitions. [2024-11-09 11:15:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 11:15:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2024-11-09 11:15:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:15:06,946 INFO L225 Difference]: With dead ends: 12447 [2024-11-09 11:15:06,946 INFO L226 Difference]: Without dead ends: 12446 [2024-11-09 11:15:06,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=499, Invalid=2051, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 11:15:06,952 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 257 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 11:15:06,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 275 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 11:15:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12446 states. [2024-11-09 11:15:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12446 to 11800. [2024-11-09 11:15:08,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11800 states, 8177 states have (on average 1.0699523052464228) internal successors, (8749), 8456 states have internal predecessors, (8749), 2284 states have call successors, (2284), 476 states have call predecessors, (2284), 1335 states have return successors, (7883), 2867 states have call predecessors, (7883), 2276 states have call successors, (7883) [2024-11-09 11:15:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11800 states to 11800 states and 18916 transitions. [2024-11-09 11:15:08,895 INFO L78 Accepts]: Start accepts. Automaton has 11800 states and 18916 transitions. Word has length 68 [2024-11-09 11:15:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:15:08,898 INFO L471 AbstractCegarLoop]: Abstraction has 11800 states and 18916 transitions. [2024-11-09 11:15:08,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.121212121212121) internal successors, (103), 22 states have internal predecessors, (103), 11 states have call successors, (13), 11 states have call predecessors, (13), 5 states have return successors, (5), 4 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-09 11:15:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 11800 states and 18916 transitions. [2024-11-09 11:15:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 11:15:08,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:15:08,909 INFO L215 NwaCegarLoop]: trace histogram [11, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 11:15:08,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 11:15:09,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:15:09,110 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:15:09,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:15:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash 293537460, now seen corresponding path program 2 times [2024-11-09 11:15:09,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:15:09,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507640069] [2024-11-09 11:15:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:15:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:15:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:09,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-09 11:15:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:09,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:15:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:09,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:15:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:09,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:15:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:09,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:15:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:09,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 11:15:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:09,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-09 11:15:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 119 proven. 28 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-09 11:15:09,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:15:09,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507640069] [2024-11-09 11:15:09,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507640069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:15:09,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824876401] [2024-11-09 11:15:09,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 11:15:09,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:15:09,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:15:09,355 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) [2024-11-09 11:15:09,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 11:15:09,432 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 11:15:09,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 11:15:09,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 11:15:09,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:15:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 121 proven. 15 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 11:15:09,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:15:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 121 proven. 26 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-09 11:15:09,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824876401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:15:09,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:15:09,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 14 [2024-11-09 11:15:09,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103137233] [2024-11-09 11:15:09,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:15:09,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 11:15:09,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:15:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 11:15:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-09 11:15:09,798 INFO L87 Difference]: Start difference. First operand 11800 states and 18916 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-09 11:15:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 11:15:11,837 INFO L93 Difference]: Finished difference Result 22584 states and 40813 transitions. [2024-11-09 11:15:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 11:15:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) Word has length 97 [2024-11-09 11:15:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 11:15:11,908 INFO L225 Difference]: With dead ends: 22584 [2024-11-09 11:15:11,908 INFO L226 Difference]: Without dead ends: 12984 [2024-11-09 11:15:11,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 199 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-09 11:15:11,973 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 11:15:11,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 117 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 11:15:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12984 states. [2024-11-09 11:15:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12984 to 11794. [2024-11-09 11:15:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11794 states, 8174 states have (on average 1.0699779789576707) internal successors, (8746), 8453 states have internal predecessors, (8746), 2281 states have call successors, (2281), 476 states have call predecessors, (2281), 1335 states have return successors, (7803), 2864 states have call predecessors, (7803), 2246 states have call successors, (7803) [2024-11-09 11:15:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11794 states to 11794 states and 18830 transitions. [2024-11-09 11:15:14,016 INFO L78 Accepts]: Start accepts. Automaton has 11794 states and 18830 transitions. Word has length 97 [2024-11-09 11:15:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 11:15:14,017 INFO L471 AbstractCegarLoop]: Abstraction has 11794 states and 18830 transitions. [2024-11-09 11:15:14,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 12 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 6 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-09 11:15:14,017 INFO L276 IsEmpty]: Start isEmpty. Operand 11794 states and 18830 transitions. [2024-11-09 11:15:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 11:15:14,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 11:15:14,023 INFO L215 NwaCegarLoop]: trace histogram [11, 9, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 11:15:14,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 11:15:14,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:15:14,223 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ackermannErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ackermannErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2024-11-09 11:15:14,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 11:15:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash -394691490, now seen corresponding path program 3 times [2024-11-09 11:15:14,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 11:15:14,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977148294] [2024-11-09 11:15:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 11:15:14,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 11:15:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-09 11:15:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:15:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:15:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:15:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-09 11:15:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 11:15:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 11:15:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-09 11:15:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 11:15:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 11:15:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 117 proven. 51 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 11:15:14,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 11:15:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977148294] [2024-11-09 11:15:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977148294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 11:15:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061012882] [2024-11-09 11:15:14,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 11:15:14,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 11:15:14,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 11:15:14,584 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) [2024-11-09 11:15:14,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 11:15:14,677 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 11:15:14,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 11:15:14,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 11:15:14,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 11:15:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 153 proven. 26 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-09 11:15:14,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 11:15:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 123 proven. 57 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 11:15:15,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061012882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 11:15:15,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 11:15:15,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 17 [2024-11-09 11:15:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479174826] [2024-11-09 11:15:15,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 11:15:15,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 11:15:15,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 11:15:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 11:15:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-09 11:15:15,441 INFO L87 Difference]: Start difference. First operand 11794 states and 18830 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (17), 5 states have call predecessors, (17), 9 states have call successors, (17)