/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:14:32,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:14:32,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:14:32,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 17:14:32,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:14:32,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:14:32,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:14:32,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:14:32,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:14:32,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:14:32,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:14:32,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:14:32,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:14:32,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:14:32,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:14:32,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:14:32,346 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:14:32,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:14:32,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:14:32,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:14:32,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:14:32,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:14:32,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:14:32,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:14:32,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:14:32,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:14:32,350 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:14:32,350 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:14:32,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:14:32,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:14:32,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:14:32,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:14:32,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:14:32,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:14:32,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:14:32,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:14:32,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:14:32,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:14:32,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:14:32,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:14:32,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:14:32,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:14:32,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:14:32,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:14:32,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:14:32,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:14:32,792 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:14:32,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-1.i [2022-10-16 17:14:32,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4816a8b5c/22632de9398a4cdba1566dbace4ef98f/FLAGf983f588a [2022-10-16 17:14:33,595 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:14:33,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-linkedlists/ll_append-alloca-1.i [2022-10-16 17:14:33,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4816a8b5c/22632de9398a4cdba1566dbace4ef98f/FLAGf983f588a [2022-10-16 17:14:33,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4816a8b5c/22632de9398a4cdba1566dbace4ef98f [2022-10-16 17:14:33,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:14:33,840 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:14:33,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:14:33,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:14:33,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:14:33,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:14:33" (1/1) ... [2022-10-16 17:14:33,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426b5172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:33, skipping insertion in model container [2022-10-16 17:14:33,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:14:33" (1/1) ... [2022-10-16 17:14:33,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:14:33,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:14:34,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:14:34,306 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:14:34,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:14:34,385 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:14:34,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34 WrapperNode [2022-10-16 17:14:34,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:14:34,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:14:34,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:14:34,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:14:34,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,436 INFO L138 Inliner]: procedures = 115, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-10-16 17:14:34,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:14:34,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:14:34,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:14:34,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:14:34,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:14:34,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:14:34,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:14:34,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:14:34,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (1/1) ... [2022-10-16 17:14:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:14:34,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:34,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 17:14:34,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 17:14:34,572 INFO L130 BoogieDeclarations]: Found specification of procedure new_ll [2022-10-16 17:14:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure new_ll [2022-10-16 17:14:34,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:14:34,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 17:14:34,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 17:14:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 17:14:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure length [2022-10-16 17:14:34,574 INFO L138 BoogieDeclarations]: Found implementation of procedure length [2022-10-16 17:14:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:14:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:14:34,691 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:14:34,693 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:14:34,991 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:14:35,010 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:14:35,010 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 17:14:35,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:14:35 BoogieIcfgContainer [2022-10-16 17:14:35,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:14:35,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:14:35,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:14:35,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:14:35,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:14:33" (1/3) ... [2022-10-16 17:14:35,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164f8c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:14:35, skipping insertion in model container [2022-10-16 17:14:35,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:14:34" (2/3) ... [2022-10-16 17:14:35,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164f8c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:14:35, skipping insertion in model container [2022-10-16 17:14:35,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:14:35" (3/3) ... [2022-10-16 17:14:35,032 INFO L112 eAbstractionObserver]: Analyzing ICFG ll_append-alloca-1.i [2022-10-16 17:14:35,053 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:14:35,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-16 17:14:35,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:14:35,124 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6b154a09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:14:35,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-16 17:14:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 33 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 17:14:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 17:14:35,138 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:35,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 17:14:35,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1664484, now seen corresponding path program 1 times [2022-10-16 17:14:35,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:35,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393051359] [2022-10-16 17:14:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:35,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:35,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:35,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:35,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393051359] [2022-10-16 17:14:35,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393051359] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:35,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:35,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:14:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272935205] [2022-10-16 17:14:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:35,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:14:35,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:14:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:14:35,397 INFO L87 Difference]: Start difference. First operand has 41 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 33 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:35,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:35,457 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-10-16 17:14:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:14:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-16 17:14:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:35,473 INFO L225 Difference]: With dead ends: 58 [2022-10-16 17:14:35,474 INFO L226 Difference]: Without dead ends: 36 [2022-10-16 17:14:35,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:14:35,488 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:35,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:14:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-16 17:14:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-16 17:14:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.375) internal successors, (33), 29 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:14:35,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-10-16 17:14:35,544 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 4 [2022-10-16 17:14:35,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:35,545 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-10-16 17:14:35,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-10-16 17:14:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 17:14:35,546 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:35,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 17:14:35,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:14:35,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash 51599069, now seen corresponding path program 1 times [2022-10-16 17:14:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:35,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922891461] [2022-10-16 17:14:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:35,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:35,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:35,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922891461] [2022-10-16 17:14:35,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922891461] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:35,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:35,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:14:35,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344212415] [2022-10-16 17:14:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:35,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:14:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:14:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:14:35,588 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:35,605 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-10-16 17:14:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:14:35,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-16 17:14:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:35,607 INFO L225 Difference]: With dead ends: 36 [2022-10-16 17:14:35,607 INFO L226 Difference]: Without dead ends: 35 [2022-10-16 17:14:35,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:14:35,610 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:35,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 63 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:14:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-16 17:14:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-10-16 17:14:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 28 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 17:14:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-10-16 17:14:35,620 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2022-10-16 17:14:35,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:35,621 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-10-16 17:14:35,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-10-16 17:14:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 17:14:35,622 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:35,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:35,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:14:35,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash 164661849, now seen corresponding path program 1 times [2022-10-16 17:14:35,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:35,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591286081] [2022-10-16 17:14:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:35,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:35,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591286081] [2022-10-16 17:14:35,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591286081] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:35,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:35,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:14:35,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112472311] [2022-10-16 17:14:35,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:35,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:35,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:14:35,816 INFO L87 Difference]: Start difference. First operand 35 states and 41 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) [2022-10-16 17:14:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:35,942 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2022-10-16 17:14:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:14:35,943 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 [2022-10-16 17:14:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:35,949 INFO L225 Difference]: With dead ends: 47 [2022-10-16 17:14:35,949 INFO L226 Difference]: Without dead ends: 46 [2022-10-16 17:14:35,950 INFO L412 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 [2022-10-16 17:14:35,954 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:35,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 104 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-10-16 17:14:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-10-16 17:14:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 34 states have internal predecessors, (40), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 17:14:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-10-16 17:14:35,981 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 9 [2022-10-16 17:14:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:35,984 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-10-16 17:14:35,984 INFO L496 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) [2022-10-16 17:14:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-10-16 17:14:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 17:14:35,985 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:35,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:35,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:14:35,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:35,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 809550061, now seen corresponding path program 1 times [2022-10-16 17:14:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:35,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064553600] [2022-10-16 17:14:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:35,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:36,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064553600] [2022-10-16 17:14:36,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064553600] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:36,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:36,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:14:36,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190624025] [2022-10-16 17:14:36,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:36,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:36,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:36,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:36,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:14:36,179 INFO L87 Difference]: Start difference. First operand 43 states and 51 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) [2022-10-16 17:14:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:36,257 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2022-10-16 17:14:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:14:36,258 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 [2022-10-16 17:14:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:36,260 INFO L225 Difference]: With dead ends: 65 [2022-10-16 17:14:36,260 INFO L226 Difference]: Without dead ends: 64 [2022-10-16 17:14:36,260 INFO L412 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 [2022-10-16 17:14:36,262 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:36,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 104 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-16 17:14:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2022-10-16 17:14:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 46 states have internal predecessors, (55), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:14:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2022-10-16 17:14:36,279 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 10 [2022-10-16 17:14:36,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:36,279 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2022-10-16 17:14:36,279 INFO L496 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) [2022-10-16 17:14:36,280 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2022-10-16 17:14:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 17:14:36,280 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:36,281 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:36,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:14:36,281 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:36,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:36,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1050808119, now seen corresponding path program 1 times [2022-10-16 17:14:36,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:36,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62093447] [2022-10-16 17:14:36,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:36,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:36,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62093447] [2022-10-16 17:14:36,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62093447] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:36,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137579737] [2022-10-16 17:14:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:36,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:36,486 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) [2022-10-16 17:14:36,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:14:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:36,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:14:36,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:36,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:14:36,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137579737] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:36,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:14:36,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-10-16 17:14:36,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216029681] [2022-10-16 17:14:36,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:36,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:36,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:36,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-16 17:14:36,657 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:14:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:36,749 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2022-10-16 17:14:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:14:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-16 17:14:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:36,758 INFO L225 Difference]: With dead ends: 59 [2022-10-16 17:14:36,758 INFO L226 Difference]: Without dead ends: 58 [2022-10-16 17:14:36,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:14:36,762 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:36,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:36,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-16 17:14:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-10-16 17:14:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 states have internal predecessors, (53), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 17:14:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-10-16 17:14:36,790 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 15 [2022-10-16 17:14:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:36,793 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-10-16 17:14:36,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:14:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-10-16 17:14:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 17:14:36,795 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:36,796 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:36,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:37,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:37,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:37,012 INFO L85 PathProgramCache]: Analyzing trace with hash 872071897, now seen corresponding path program 1 times [2022-10-16 17:14:37,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:37,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640742936] [2022-10-16 17:14:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:37,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:37,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:37,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:37,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640742936] [2022-10-16 17:14:37,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640742936] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:37,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102174772] [2022-10-16 17:14:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:37,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:37,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:37,243 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) [2022-10-16 17:14:37,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:14:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:37,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:14:37,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:37,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:37,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102174772] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:37,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:37,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-16 17:14:37,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650370206] [2022-10-16 17:14:37,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:37,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:14:37,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:14:37,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:14:37,491 INFO L87 Difference]: Start difference. First operand 58 states and 68 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) [2022-10-16 17:14:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:37,747 INFO L93 Difference]: Finished difference Result 123 states and 146 transitions. [2022-10-16 17:14:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 17:14:37,748 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 [2022-10-16 17:14:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:37,752 INFO L225 Difference]: With dead ends: 123 [2022-10-16 17:14:37,753 INFO L226 Difference]: Without dead ends: 122 [2022-10-16 17:14:37,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-10-16 17:14:37,762 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 77 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:37,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 211 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-10-16 17:14:37,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2022-10-16 17:14:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 81 states have internal predecessors, (95), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-16 17:14:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2022-10-16 17:14:37,796 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 15 [2022-10-16 17:14:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:37,797 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2022-10-16 17:14:37,797 INFO L496 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) [2022-10-16 17:14:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2022-10-16 17:14:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 17:14:37,799 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:37,799 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:37,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 17:14:38,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 17:14:38,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:38,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:38,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1315157742, now seen corresponding path program 1 times [2022-10-16 17:14:38,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:38,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135000496] [2022-10-16 17:14:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:38,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:38,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-16 17:14:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:14:38,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135000496] [2022-10-16 17:14:38,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135000496] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372757285] [2022-10-16 17:14:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:38,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:38,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:38,318 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) [2022-10-16 17:14:38,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:14:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:38,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 17:14:38,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 17:14:38,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 17:14:38,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372757285] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:38,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 17:14:38,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-10-16 17:14:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592205500] [2022-10-16 17:14:38,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:38,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:14:38,488 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:14:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:38,549 INFO L93 Difference]: Finished difference Result 143 states and 164 transitions. [2022-10-16 17:14:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:14:38,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-10-16 17:14:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:38,553 INFO L225 Difference]: With dead ends: 143 [2022-10-16 17:14:38,554 INFO L226 Difference]: Without dead ends: 124 [2022-10-16 17:14:38,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-10-16 17:14:38,558 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:38,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:14:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-10-16 17:14:38,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2022-10-16 17:14:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.205128205128205) internal successors, (94), 81 states have internal predecessors, (94), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-16 17:14:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2022-10-16 17:14:38,601 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 32 [2022-10-16 17:14:38,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:38,603 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2022-10-16 17:14:38,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 17:14:38,607 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2022-10-16 17:14:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 17:14:38,608 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:38,608 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:38,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:38,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:38,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:38,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1546586093, now seen corresponding path program 2 times [2022-10-16 17:14:38,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:38,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926427740] [2022-10-16 17:14:38,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:38,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:39,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926427740] [2022-10-16 17:14:39,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926427740] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109351014] [2022-10-16 17:14:39,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:14:39,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:39,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:39,110 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) [2022-10-16 17:14:39,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:14:39,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:14:39,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:14:39,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:14:39,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:39,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:39,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109351014] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:39,521 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:39,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-10-16 17:14:39,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063489381] [2022-10-16 17:14:39,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 17:14:39,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:39,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 17:14:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:14:39,524 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 14 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:40,041 INFO L93 Difference]: Finished difference Result 243 states and 283 transitions. [2022-10-16 17:14:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 17:14:40,041 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 14 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 17:14:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:40,048 INFO L225 Difference]: With dead ends: 243 [2022-10-16 17:14:40,049 INFO L226 Difference]: Without dead ends: 242 [2022-10-16 17:14:40,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=554, Invalid=1252, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 17:14:40,052 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 277 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:40,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 251 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:14:40,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-10-16 17:14:40,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 202. [2022-10-16 17:14:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 150 states have (on average 1.1866666666666668) internal successors, (178), 153 states have internal predecessors, (178), 26 states have call successors, (26), 23 states have call predecessors, (26), 23 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-10-16 17:14:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2022-10-16 17:14:40,104 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 30 [2022-10-16 17:14:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:40,104 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2022-10-16 17:14:40,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 14 states have internal predecessors, (48), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2022-10-16 17:14:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 17:14:40,112 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:40,113 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:40,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:40,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash 191078054, now seen corresponding path program 1 times [2022-10-16 17:14:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:40,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909550951] [2022-10-16 17:14:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:40,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 17:14:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-16 17:14:40,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:40,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909550951] [2022-10-16 17:14:40,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909550951] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:40,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:40,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:14:40,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390212901] [2022-10-16 17:14:40,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:40,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:14:40,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:40,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:14:40,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:14:40,441 INFO L87 Difference]: Start difference. First operand 202 states and 229 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:14:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:40,534 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2022-10-16 17:14:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:14:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2022-10-16 17:14:40,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:40,539 INFO L225 Difference]: With dead ends: 251 [2022-10-16 17:14:40,539 INFO L226 Difference]: Without dead ends: 249 [2022-10-16 17:14:40,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 17:14:40,542 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:40,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-10-16 17:14:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 207. [2022-10-16 17:14:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 154 states have (on average 1.1818181818181819) internal successors, (182), 157 states have internal predecessors, (182), 26 states have call successors, (26), 23 states have call predecessors, (26), 24 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2022-10-16 17:14:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 234 transitions. [2022-10-16 17:14:40,569 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 234 transitions. Word has length 37 [2022-10-16 17:14:40,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:40,569 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 234 transitions. [2022-10-16 17:14:40,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:14:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 234 transitions. [2022-10-16 17:14:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 17:14:40,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:40,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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, 1, 1] [2022-10-16 17:14:40,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 17:14:40,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:40,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -896533882, now seen corresponding path program 1 times [2022-10-16 17:14:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:40,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274098002] [2022-10-16 17:14:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 17:14:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:14:40,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:40,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274098002] [2022-10-16 17:14:40,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274098002] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:40,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196045975] [2022-10-16 17:14:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:40,742 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) [2022-10-16 17:14:40,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:14:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:40,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 17:14:40,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:14:40,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 17:14:40,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196045975] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:40,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:40,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-16 17:14:40,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587780776] [2022-10-16 17:14:40,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:40,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 17:14:40,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:40,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 17:14:40,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-10-16 17:14:40,983 INFO L87 Difference]: Start difference. First operand 207 states and 234 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 17:14:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:41,190 INFO L93 Difference]: Finished difference Result 264 states and 297 transitions. [2022-10-16 17:14:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 17:14:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) Word has length 45 [2022-10-16 17:14:41,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:41,193 INFO L225 Difference]: With dead ends: 264 [2022-10-16 17:14:41,193 INFO L226 Difference]: Without dead ends: 263 [2022-10-16 17:14:41,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2022-10-16 17:14:41,194 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 36 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:41,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 188 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-10-16 17:14:41,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 221. [2022-10-16 17:14:41,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 165 states have (on average 1.1818181818181819) internal successors, (195), 168 states have internal predecessors, (195), 26 states have call successors, (26), 23 states have call predecessors, (26), 27 states have return successors, (29), 29 states have call predecessors, (29), 25 states have call successors, (29) [2022-10-16 17:14:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 250 transitions. [2022-10-16 17:14:41,216 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 250 transitions. Word has length 45 [2022-10-16 17:14:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:41,217 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 250 transitions. [2022-10-16 17:14:41,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 17:14:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 250 transitions. [2022-10-16 17:14:41,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 17:14:41,219 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:41,219 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 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, 1] [2022-10-16 17:14:41,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:41,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-16 17:14:41,433 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting lengthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:41,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 70134870, now seen corresponding path program 1 times [2022-10-16 17:14:41,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:41,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795889260] [2022-10-16 17:14:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:41,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:14:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 17:14:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:41,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795889260] [2022-10-16 17:14:41,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795889260] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:14:41,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:14:41,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:14:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935076064] [2022-10-16 17:14:41,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:14:41,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:14:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:14:41,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:14:41,523 INFO L87 Difference]: Start difference. First operand 221 states and 250 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:14:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:41,582 INFO L93 Difference]: Finished difference Result 263 states and 294 transitions. [2022-10-16 17:14:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:14:41,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-10-16 17:14:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:41,585 INFO L225 Difference]: With dead ends: 263 [2022-10-16 17:14:41,585 INFO L226 Difference]: Without dead ends: 262 [2022-10-16 17:14:41,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:14:41,587 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:41,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 76 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:14:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-10-16 17:14:41,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 220. [2022-10-16 17:14:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 165 states have (on average 1.1636363636363636) internal successors, (192), 167 states have internal predecessors, (192), 26 states have call successors, (26), 23 states have call predecessors, (26), 27 states have return successors, (29), 29 states have call predecessors, (29), 25 states have call successors, (29) [2022-10-16 17:14:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 247 transitions. [2022-10-16 17:14:41,609 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 247 transitions. Word has length 49 [2022-10-16 17:14:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:41,609 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 247 transitions. [2022-10-16 17:14:41,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 17:14:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 247 transitions. [2022-10-16 17:14:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-16 17:14:41,611 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:41,611 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:41,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 17:14:41,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:41,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1795859053, now seen corresponding path program 3 times [2022-10-16 17:14:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:41,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563570310] [2022-10-16 17:14:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:41,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:42,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:42,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563570310] [2022-10-16 17:14:42,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563570310] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:42,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434393433] [2022-10-16 17:14:42,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:14:42,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:42,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:42,352 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) [2022-10-16 17:14:42,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:14:44,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 17:14:44,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:14:44,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 17:14:44,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:44,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:14:45,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434393433] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:45,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:45,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-10-16 17:14:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853394297] [2022-10-16 17:14:45,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:45,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:14:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:14:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:14:45,388 INFO L87 Difference]: Start difference. First operand 220 states and 247 transitions. Second operand has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 26 states have internal predecessors, (96), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:46,745 INFO L93 Difference]: Finished difference Result 501 states and 577 transitions. [2022-10-16 17:14:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-10-16 17:14:46,745 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 26 states have internal predecessors, (96), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-10-16 17:14:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:46,749 INFO L225 Difference]: With dead ends: 501 [2022-10-16 17:14:46,749 INFO L226 Difference]: Without dead ends: 500 [2022-10-16 17:14:46,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2534, Invalid=5656, Unknown=0, NotChecked=0, Total=8190 [2022-10-16 17:14:46,754 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 802 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:46,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 345 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:14:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-10-16 17:14:46,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 412. [2022-10-16 17:14:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 309 states have (on average 1.1650485436893203) internal successors, (360), 311 states have internal predecessors, (360), 50 states have call successors, (50), 47 states have call predecessors, (50), 51 states have return successors, (53), 53 states have call predecessors, (53), 49 states have call successors, (53) [2022-10-16 17:14:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 463 transitions. [2022-10-16 17:14:46,790 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 463 transitions. Word has length 60 [2022-10-16 17:14:46,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:46,790 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 463 transitions. [2022-10-16 17:14:46,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.0425531914893615) internal successors, (96), 26 states have internal predecessors, (96), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:14:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 463 transitions. [2022-10-16 17:14:46,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-10-16 17:14:46,792 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:46,792 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:46,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:47,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:47,007 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:47,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:47,008 INFO L85 PathProgramCache]: Analyzing trace with hash 80783014, now seen corresponding path program 2 times [2022-10-16 17:14:47,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:47,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687820956] [2022-10-16 17:14:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:47,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 17:14:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-16 17:14:47,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:47,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687820956] [2022-10-16 17:14:47,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687820956] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:47,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585634295] [2022-10-16 17:14:47,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:14:47,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:47,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:47,394 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) [2022-10-16 17:14:47,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:14:47,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:14:47,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:14:47,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 17:14:47,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-16 17:14:47,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-16 17:14:48,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585634295] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:48,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:48,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2022-10-16 17:14:48,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957755162] [2022-10-16 17:14:48,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:48,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 17:14:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 17:14:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2022-10-16 17:14:48,118 INFO L87 Difference]: Start difference. First operand 412 states and 463 transitions. Second operand has 25 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 1 states have call successors, (8), 2 states have call predecessors, (8), 12 states have return successors, (14), 12 states have call predecessors, (14), 1 states have call successors, (14) [2022-10-16 17:14:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:48,540 INFO L93 Difference]: Finished difference Result 533 states and 591 transitions. [2022-10-16 17:14:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 17:14:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 1 states have call successors, (8), 2 states have call predecessors, (8), 12 states have return successors, (14), 12 states have call predecessors, (14), 1 states have call successors, (14) Word has length 69 [2022-10-16 17:14:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:48,544 INFO L225 Difference]: With dead ends: 533 [2022-10-16 17:14:48,544 INFO L226 Difference]: Without dead ends: 532 [2022-10-16 17:14:48,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1561, Unknown=0, NotChecked=0, Total=1980 [2022-10-16 17:14:48,547 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 55 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:48,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 244 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:14:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-10-16 17:14:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 442. [2022-10-16 17:14:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 333 states have (on average 1.1531531531531531) internal successors, (384), 335 states have internal predecessors, (384), 50 states have call successors, (50), 47 states have call predecessors, (50), 57 states have return successors, (59), 59 states have call predecessors, (59), 49 states have call successors, (59) [2022-10-16 17:14:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 493 transitions. [2022-10-16 17:14:48,591 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 493 transitions. Word has length 69 [2022-10-16 17:14:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:48,592 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 493 transitions. [2022-10-16 17:14:48,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 1 states have call successors, (8), 2 states have call predecessors, (8), 12 states have return successors, (14), 12 states have call predecessors, (14), 1 states have call successors, (14) [2022-10-16 17:14:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 493 transitions. [2022-10-16 17:14:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:14:48,595 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:48,595 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 10, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:48,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:48,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:48,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash 115550142, now seen corresponding path program 3 times [2022-10-16 17:14:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:48,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153716682] [2022-10-16 17:14:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 17:14:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-10-16 17:14:50,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:50,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153716682] [2022-10-16 17:14:50,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153716682] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:50,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797425698] [2022-10-16 17:14:50,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:14:50,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:50,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:50,343 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) [2022-10-16 17:14:50,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:14:50,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 17:14:50,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:14:50,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 67 conjunts are in the unsatisfiable core [2022-10-16 17:14:50,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:50,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 17:14:50,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 17:14:50,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:14:50,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 17:14:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-10-16 17:14:50,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:14:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-10-16 17:14:51,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797425698] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:14:51,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:14:51,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 14] total 46 [2022-10-16 17:14:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497659432] [2022-10-16 17:14:51,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:14:51,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-10-16 17:14:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:14:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-10-16 17:14:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1862, Unknown=0, NotChecked=0, Total=2070 [2022-10-16 17:14:51,546 INFO L87 Difference]: Start difference. First operand 442 states and 493 transitions. Second operand has 46 states, 43 states have (on average 2.255813953488372) internal successors, (97), 38 states have internal predecessors, (97), 6 states have call successors, (14), 6 states have call predecessors, (14), 16 states have return successors, (21), 17 states have call predecessors, (21), 3 states have call successors, (21) [2022-10-16 17:14:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:14:53,008 INFO L93 Difference]: Finished difference Result 755 states and 824 transitions. [2022-10-16 17:14:53,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-10-16 17:14:53,009 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 2.255813953488372) internal successors, (97), 38 states have internal predecessors, (97), 6 states have call successors, (14), 6 states have call predecessors, (14), 16 states have return successors, (21), 17 states have call predecessors, (21), 3 states have call successors, (21) Word has length 120 [2022-10-16 17:14:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:14:53,013 INFO L225 Difference]: With dead ends: 755 [2022-10-16 17:14:53,013 INFO L226 Difference]: Without dead ends: 681 [2022-10-16 17:14:53,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=698, Invalid=5782, Unknown=0, NotChecked=0, Total=6480 [2022-10-16 17:14:53,018 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 112 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:14:53,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 472 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:14:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-10-16 17:14:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 454. [2022-10-16 17:14:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 342 states have (on average 1.1491228070175439) internal successors, (393), 344 states have internal predecessors, (393), 50 states have call successors, (50), 47 states have call predecessors, (50), 60 states have return successors, (62), 62 states have call predecessors, (62), 49 states have call successors, (62) [2022-10-16 17:14:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 505 transitions. [2022-10-16 17:14:53,055 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 505 transitions. Word has length 120 [2022-10-16 17:14:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:14:53,056 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 505 transitions. [2022-10-16 17:14:53,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 2.255813953488372) internal successors, (97), 38 states have internal predecessors, (97), 6 states have call successors, (14), 6 states have call predecessors, (14), 16 states have return successors, (21), 17 states have call predecessors, (21), 3 states have call successors, (21) [2022-10-16 17:14:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 505 transitions. [2022-10-16 17:14:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-16 17:14:53,059 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:14:53,059 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 11, 11, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:14:53,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 17:14:53,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 17:14:53,273 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:14:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:14:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1599519849, now seen corresponding path program 1 times [2022-10-16 17:14:53,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:14:53,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425158649] [2022-10-16 17:14:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:14:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:14:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:14:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:14:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 17:14:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:14:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-10-16 17:14:53,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:14:53,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425158649] [2022-10-16 17:14:53,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425158649] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:14:53,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457190303] [2022-10-16 17:14:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:14:53,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:14:53,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:14:53,724 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) [2022-10-16 17:14:53,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 17:14:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:14:53,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 17:14:53,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:14:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-10-16 17:14:54,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:15:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-10-16 17:15:00,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457190303] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:15:00,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:15:00,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25, 25] total 56 [2022-10-16 17:15:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034205543] [2022-10-16 17:15:00,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:15:00,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-10-16 17:15:00,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:15:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-10-16 17:15:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=661, Invalid=2419, Unknown=0, NotChecked=0, Total=3080 [2022-10-16 17:15:00,921 INFO L87 Difference]: Start difference. First operand 454 states and 505 transitions. Second operand has 56 states, 56 states have (on average 2.4464285714285716) internal successors, (137), 54 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 26 states have return successors, (31), 28 states have call predecessors, (31), 3 states have call successors, (31) [2022-10-16 17:15:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:15:02,938 INFO L93 Difference]: Finished difference Result 685 states and 756 transitions. [2022-10-16 17:15:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-16 17:15:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4464285714285716) internal successors, (137), 54 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 26 states have return successors, (31), 28 states have call predecessors, (31), 3 states have call successors, (31) Word has length 131 [2022-10-16 17:15:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:15:02,942 INFO L225 Difference]: With dead ends: 685 [2022-10-16 17:15:02,943 INFO L226 Difference]: Without dead ends: 615 [2022-10-16 17:15:02,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1971, Invalid=9371, Unknown=0, NotChecked=0, Total=11342 [2022-10-16 17:15:02,952 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 131 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:15:02,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 272 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:15:02,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-10-16 17:15:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 525. [2022-10-16 17:15:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 398 states have (on average 1.1281407035175879) internal successors, (449), 400 states have internal predecessors, (449), 51 states have call successors, (51), 47 states have call predecessors, (51), 74 states have return successors, (77), 77 states have call predecessors, (77), 50 states have call successors, (77) [2022-10-16 17:15:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 577 transitions. [2022-10-16 17:15:02,994 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 577 transitions. Word has length 131 [2022-10-16 17:15:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:15:02,994 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 577 transitions. [2022-10-16 17:15:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.4464285714285716) internal successors, (137), 54 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 26 states have return successors, (31), 28 states have call predecessors, (31), 3 states have call successors, (31) [2022-10-16 17:15:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 577 transitions. [2022-10-16 17:15:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-10-16 17:15:03,000 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:15:03,000 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:15:03,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 17:15:03,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 17:15:03,214 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:15:03,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:15:03,215 INFO L85 PathProgramCache]: Analyzing trace with hash 523876205, now seen corresponding path program 4 times [2022-10-16 17:15:03,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:15:03,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892040925] [2022-10-16 17:15:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:15:03,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:15:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:15:05,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:15:05,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892040925] [2022-10-16 17:15:05,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892040925] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:15:05,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528034505] [2022-10-16 17:15:05,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:15:05,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:15:05,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:15:05,533 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) [2022-10-16 17:15:05,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 17:15:09,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:15:09,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:15:09,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 17:15:09,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:15:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:15:09,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:15:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:15:11,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528034505] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:15:11,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:15:11,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-10-16 17:15:11,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434927687] [2022-10-16 17:15:11,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:15:11,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-16 17:15:11,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:15:11,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-16 17:15:11,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2022-10-16 17:15:11,991 INFO L87 Difference]: Start difference. First operand 525 states and 577 transitions. Second operand has 96 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 50 states have internal predecessors, (192), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:15:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:15:16,712 INFO L93 Difference]: Finished difference Result 1092 states and 1241 transitions. [2022-10-16 17:15:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-10-16 17:15:16,713 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 50 states have internal predecessors, (192), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-10-16 17:15:16,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:15:16,719 INFO L225 Difference]: With dead ends: 1092 [2022-10-16 17:15:16,719 INFO L226 Difference]: Without dead ends: 1091 [2022-10-16 17:15:16,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8376 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=10814, Invalid=23968, Unknown=0, NotChecked=0, Total=34782 [2022-10-16 17:15:16,730 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1969 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:15:16,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 416 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 17:15:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-10-16 17:15:16,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 909. [2022-10-16 17:15:16,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 686 states have (on average 1.1443148688046647) internal successors, (785), 688 states have internal predecessors, (785), 99 states have call successors, (99), 95 states have call predecessors, (99), 122 states have return successors, (125), 125 states have call predecessors, (125), 98 states have call successors, (125) [2022-10-16 17:15:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1009 transitions. [2022-10-16 17:15:16,791 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1009 transitions. Word has length 120 [2022-10-16 17:15:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:15:16,791 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1009 transitions. [2022-10-16 17:15:16,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.0210526315789474) internal successors, (192), 50 states have internal predecessors, (192), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:15:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1009 transitions. [2022-10-16 17:15:16,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-10-16 17:15:16,796 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:15:16,797 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 24, 24, 5, 5, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:15:16,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 17:15:17,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:15:17,012 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:15:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:15:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash -795782490, now seen corresponding path program 4 times [2022-10-16 17:15:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:15:17,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456545937] [2022-10-16 17:15:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:15:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:15:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:15:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 17:15:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 17:15:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:17,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 50 proven. 88 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2022-10-16 17:15:18,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:15:18,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456545937] [2022-10-16 17:15:18,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456545937] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:15:18,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774455690] [2022-10-16 17:15:18,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:15:18,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:15:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:15:18,270 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) [2022-10-16 17:15:18,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 17:15:18,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:15:18,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:15:18,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 17:15:18,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:15:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 2462 trivial. 0 not checked. [2022-10-16 17:15:18,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:15:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2478 backedges. 50 proven. 88 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2022-10-16 17:15:19,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774455690] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:15:19,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:15:19,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-10-16 17:15:19,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783494072] [2022-10-16 17:15:19,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:15:19,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 17:15:19,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:15:19,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 17:15:19,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:15:19,250 INFO L87 Difference]: Start difference. First operand 909 states and 1009 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:15:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:15:19,415 INFO L93 Difference]: Finished difference Result 1228 states and 1332 transitions. [2022-10-16 17:15:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 17:15:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 245 [2022-10-16 17:15:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:15:19,426 INFO L225 Difference]: With dead ends: 1228 [2022-10-16 17:15:19,426 INFO L226 Difference]: Without dead ends: 1098 [2022-10-16 17:15:19,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 544 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-10-16 17:15:19,429 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 30 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:15:19,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 183 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:15:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-10-16 17:15:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 907. [2022-10-16 17:15:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 684 states have (on average 1.1432748538011697) internal successors, (782), 687 states have internal predecessors, (782), 99 states have call successors, (99), 95 states have call predecessors, (99), 122 states have return successors, (125), 124 states have call predecessors, (125), 98 states have call successors, (125) [2022-10-16 17:15:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1006 transitions. [2022-10-16 17:15:19,510 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1006 transitions. Word has length 245 [2022-10-16 17:15:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:15:19,511 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1006 transitions. [2022-10-16 17:15:19,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-10-16 17:15:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1006 transitions. [2022-10-16 17:15:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-10-16 17:15:19,517 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:15:19,518 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 24, 24, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:15:19,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:15:19,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:15:19,731 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:15:19,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:15:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash 667136886, now seen corresponding path program 5 times [2022-10-16 17:15:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:15:19,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991543648] [2022-10-16 17:15:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:15:19,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:15:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-10-16 17:15:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-10-16 17:15:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:15:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-16 17:15:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 17:15:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:15:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2454 backedges. 53 proven. 84 refuted. 0 times theorem prover too weak. 2317 trivial. 0 not checked. [2022-10-16 17:15:21,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:15:21,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991543648] [2022-10-16 17:15:21,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991543648] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:15:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825744918] [2022-10-16 17:15:21,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:15:21,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:15:21,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:15:21,092 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) [2022-10-16 17:15:21,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 17:15:21,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-10-16 17:15:21,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:15:21,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 17:15:21,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:15:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2454 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2022-10-16 17:15:22,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:16:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2454 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2022-10-16 17:16:25,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825744918] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:16:25,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:16:25,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 51, 51] total 109 [2022-10-16 17:16:25,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801043280] [2022-10-16 17:16:25,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:16:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-10-16 17:16:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:16:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-10-16 17:16:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2668, Invalid=9104, Unknown=0, NotChecked=0, Total=11772 [2022-10-16 17:16:25,858 INFO L87 Difference]: Start difference. First operand 907 states and 1006 transitions. Second operand has 109 states, 109 states have (on average 2.220183486238532) internal successors, (242), 108 states have internal predecessors, (242), 4 states have call successors, (10), 3 states have call predecessors, (10), 54 states have return successors, (59), 55 states have call predecessors, (59), 4 states have call successors, (59) [2022-10-16 17:16:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:16:31,939 INFO L93 Difference]: Finished difference Result 1628 states and 1758 transitions. [2022-10-16 17:16:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-10-16 17:16:31,940 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.220183486238532) internal successors, (242), 108 states have internal predecessors, (242), 4 states have call successors, (10), 3 states have call predecessors, (10), 54 states have return successors, (59), 55 states have call predecessors, (59), 4 states have call successors, (59) Word has length 237 [2022-10-16 17:16:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:16:31,947 INFO L225 Difference]: With dead ends: 1628 [2022-10-16 17:16:31,947 INFO L226 Difference]: Without dead ends: 1496 [2022-10-16 17:16:31,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11979 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=7992, Invalid=37164, Unknown=0, NotChecked=0, Total=45156 [2022-10-16 17:16:31,956 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 247 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 17:16:31,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 300 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 17:16:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2022-10-16 17:16:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1030. [2022-10-16 17:16:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 783 states have (on average 1.1251596424010217) internal successors, (881), 786 states have internal predecessors, (881), 99 states have call successors, (99), 95 states have call predecessors, (99), 146 states have return successors, (148), 148 states have call predecessors, (148), 97 states have call successors, (148) [2022-10-16 17:16:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1128 transitions. [2022-10-16 17:16:32,023 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1128 transitions. Word has length 237 [2022-10-16 17:16:32,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:16:32,023 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1128 transitions. [2022-10-16 17:16:32,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.220183486238532) internal successors, (242), 108 states have internal predecessors, (242), 4 states have call successors, (10), 3 states have call predecessors, (10), 54 states have return successors, (59), 55 states have call predecessors, (59), 4 states have call successors, (59) [2022-10-16 17:16:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1128 transitions. [2022-10-16 17:16:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-10-16 17:16:32,029 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:16:32,029 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:16:32,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:16:32,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 17:16:32,243 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [new_llErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, new_llErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, lengthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-16 17:16:32,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:16:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash -975740563, now seen corresponding path program 5 times [2022-10-16 17:16:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:16:32,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618720356] [2022-10-16 17:16:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:16:32,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:16:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:16:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:16:41,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:16:41,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618720356] [2022-10-16 17:16:41,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618720356] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:16:41,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368440192] [2022-10-16 17:16:41,161 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:16:41,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:16:41,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:16:41,162 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) [2022-10-16 17:16:41,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process