./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe22a831ab045bcc67da4505e3ba36b6f549cf1239b349bc9f8fd22458d7fbac --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 02:35:45,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 02:35:45,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 02:35:45,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 02:35:45,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 02:35:45,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 02:35:45,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 02:35:45,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 02:35:45,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 02:35:45,228 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 02:35:45,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 02:35:45,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 02:35:45,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 02:35:45,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 02:35:45,232 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 02:35:45,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 02:35:45,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 02:35:45,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 02:35:45,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 02:35:45,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 02:35:45,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 02:35:45,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 02:35:45,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 02:35:45,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 02:35:45,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 02:35:45,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 02:35:45,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 02:35:45,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 02:35:45,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 02:35:45,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 02:35:45,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 02:35:45,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 02:35:45,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:35:45,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 02:35:45,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 02:35:45,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 02:35:45,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 02:35:45,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 02:35:45,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 02:35:45,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 02:35:45,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 02:35:45,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 02:35:45,243 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe22a831ab045bcc67da4505e3ba36b6f549cf1239b349bc9f8fd22458d7fbac [2024-10-14 02:35:45,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 02:35:45,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 02:35:45,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 02:35:45,512 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 02:35:45,513 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 02:35:45,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.c [2024-10-14 02:35:46,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 02:35:47,187 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 02:35:47,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.c [2024-10-14 02:35:47,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/990238f12/ab60a87dd4224e0799cf6cddb53c5f69/FLAGc1c8c8274 [2024-10-14 02:35:47,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/990238f12/ab60a87dd4224e0799cf6cddb53c5f69 [2024-10-14 02:35:47,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 02:35:47,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 02:35:47,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 02:35:47,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 02:35:47,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 02:35:47,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cfde49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47, skipping insertion in model container [2024-10-14 02:35:47,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 02:35:47,418 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.c[1175,1188] [2024-10-14 02:35:47,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:35:47,445 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 02:35:47,456 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_unwindbound5.c[1175,1188] [2024-10-14 02:35:47,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 02:35:47,487 INFO L204 MainTranslator]: Completed translation [2024-10-14 02:35:47,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47 WrapperNode [2024-10-14 02:35:47,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 02:35:47,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 02:35:47,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 02:35:47,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 02:35:47,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,523 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-10-14 02:35:47,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 02:35:47,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 02:35:47,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 02:35:47,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 02:35:47,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,559 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 02:35:47,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 02:35:47,579 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 02:35:47,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 02:35:47,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 02:35:47,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (1/1) ... [2024-10-14 02:35:47,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 02:35:47,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:35:47,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 02:35:47,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 02:35:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 02:35:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 02:35:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 02:35:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 02:35:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 02:35:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 02:35:47,709 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 02:35:47,710 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 02:35:47,833 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-14 02:35:47,833 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 02:35:47,854 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 02:35:47,854 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 02:35:47,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:35:47 BoogieIcfgContainer [2024-10-14 02:35:47,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 02:35:47,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 02:35:47,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 02:35:47,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 02:35:47,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:35:47" (1/3) ... [2024-10-14 02:35:47,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212f3eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:35:47, skipping insertion in model container [2024-10-14 02:35:47,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:35:47" (2/3) ... [2024-10-14 02:35:47,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212f3eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:35:47, skipping insertion in model container [2024-10-14 02:35:47,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:35:47" (3/3) ... [2024-10-14 02:35:47,864 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_unwindbound5.c [2024-10-14 02:35:47,877 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 02:35:47,877 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 02:35:47,938 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 02:35:47,944 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f8752f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 02:35:47,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 02:35:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 02:35:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 02:35:47,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:35:47,957 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:35:47,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:35:47,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:35:47,964 INFO L85 PathProgramCache]: Analyzing trace with hash -818250469, now seen corresponding path program 1 times [2024-10-14 02:35:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:35:47,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491278994] [2024-10-14 02:35:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:47,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:35:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:48,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:35:48,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491278994] [2024-10-14 02:35:48,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491278994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:35:48,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:35:48,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 02:35:48,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135207678] [2024-10-14 02:35:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:35:48,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 02:35:48,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:35:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 02:35:48,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:35:48,159 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 02:35:48,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:35:48,191 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2024-10-14 02:35:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 02:35:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-14 02:35:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:35:48,200 INFO L225 Difference]: With dead ends: 34 [2024-10-14 02:35:48,200 INFO L226 Difference]: Without dead ends: 16 [2024-10-14 02:35:48,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 02:35:48,210 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:35:48,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:35:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-14 02:35:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-14 02:35:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 02:35:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-10-14 02:35:48,240 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2024-10-14 02:35:48,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:35:48,240 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-10-14 02:35:48,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 02:35:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-10-14 02:35:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 02:35:48,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:35:48,242 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:35:48,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 02:35:48,242 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:35:48,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:35:48,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1011676302, now seen corresponding path program 1 times [2024-10-14 02:35:48,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:35:48,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035891422] [2024-10-14 02:35:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:48,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:35:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:48,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:35:48,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035891422] [2024-10-14 02:35:48,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035891422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:35:48,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:35:48,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 02:35:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071144312] [2024-10-14 02:35:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:35:48,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 02:35:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:35:48,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 02:35:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 02:35:48,391 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 02:35:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:35:48,418 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-10-14 02:35:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 02:35:48,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 02:35:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:35:48,420 INFO L225 Difference]: With dead ends: 25 [2024-10-14 02:35:48,420 INFO L226 Difference]: Without dead ends: 18 [2024-10-14 02:35:48,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 02:35:48,423 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:35:48,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:35:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-14 02:35:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-10-14 02:35:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-14 02:35:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-10-14 02:35:48,432 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 9 [2024-10-14 02:35:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:35:48,433 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-10-14 02:35:48,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 02:35:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-10-14 02:35:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 02:35:48,435 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:35:48,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:35:48,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 02:35:48,436 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:35:48,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:35:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1009888842, now seen corresponding path program 1 times [2024-10-14 02:35:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:35:48,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608196791] [2024-10-14 02:35:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:48,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:35:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:35:48,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368990402] [2024-10-14 02:35:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:48,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:48,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:35:48,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:35:48,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 02:35:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:48,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 02:35:48,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:35:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:48,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 02:35:48,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:35:48,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608196791] [2024-10-14 02:35:48,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:35:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368990402] [2024-10-14 02:35:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368990402] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 02:35:48,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 02:35:48,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 02:35:48,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892518993] [2024-10-14 02:35:48,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 02:35:48,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 02:35:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:35:48,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 02:35:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 02:35:48,778 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 02:35:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:35:48,896 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-10-14 02:35:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 02:35:48,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 02:35:48,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:35:48,898 INFO L225 Difference]: With dead ends: 33 [2024-10-14 02:35:48,898 INFO L226 Difference]: Without dead ends: 26 [2024-10-14 02:35:48,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 02:35:48,902 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 02:35:48,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 02:35:48,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-14 02:35:48,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-10-14 02:35:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 02:35:48,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-10-14 02:35:48,911 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 9 [2024-10-14 02:35:48,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:35:48,912 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-10-14 02:35:48,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 02:35:48,912 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-10-14 02:35:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 02:35:48,913 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:35:48,913 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:35:48,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 02:35:49,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:49,114 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:35:49,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:35:49,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1083966870, now seen corresponding path program 1 times [2024-10-14 02:35:49,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:35:49,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628999362] [2024-10-14 02:35:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:49,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:35:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:49,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-14 02:35:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:49,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:35:49,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628999362] [2024-10-14 02:35:49,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628999362] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:35:49,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959466040] [2024-10-14 02:35:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:49,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:35:49,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:35:49,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 02:35:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:49,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 02:35:49,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:35:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:49,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:35:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959466040] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:35:49,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:35:49,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-10-14 02:35:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186446703] [2024-10-14 02:35:49,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:35:49,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 02:35:49,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:35:49,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 02:35:49,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-14 02:35:49,456 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 02:35:49,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:35:49,544 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2024-10-14 02:35:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 02:35:49,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2024-10-14 02:35:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:35:49,545 INFO L225 Difference]: With dead ends: 61 [2024-10-14 02:35:49,545 INFO L226 Difference]: Without dead ends: 54 [2024-10-14 02:35:49,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:35:49,547 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 114 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 [2024-10-14 02:35:49,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 114 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:35:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-14 02:35:49,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-10-14 02:35:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 41 states have internal predecessors, (49), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 02:35:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-10-14 02:35:49,557 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 19 [2024-10-14 02:35:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:35:49,557 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-10-14 02:35:49,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-14 02:35:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-10-14 02:35:49,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 02:35:49,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:35:49,558 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:35:49,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 02:35:49,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-14 02:35:49,763 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:35:49,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:35:49,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1085754330, now seen corresponding path program 1 times [2024-10-14 02:35:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:35:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838862403] [2024-10-14 02:35:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:49,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:35:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:35:49,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656286445] [2024-10-14 02:35:49,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:49,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:49,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:35:49,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:35:49,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 02:35:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:49,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 02:35:49,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:35:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:50,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:35:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:52,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:35:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838862403] [2024-10-14 02:35:52,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:35:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656286445] [2024-10-14 02:35:52,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656286445] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:35:52,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:35:52,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2024-10-14 02:35:52,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076768841] [2024-10-14 02:35:52,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:35:52,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 02:35:52,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:35:52,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 02:35:52,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-14 02:35:52,745 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 02:35:54,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:35:54,361 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-10-14 02:35:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 02:35:54,362 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-10-14 02:35:54,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:35:54,364 INFO L225 Difference]: With dead ends: 83 [2024-10-14 02:35:54,364 INFO L226 Difference]: Without dead ends: 81 [2024-10-14 02:35:54,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-14 02:35:54,366 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-14 02:35:54,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 89 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-14 02:35:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-14 02:35:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-10-14 02:35:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 66 states have internal predecessors, (75), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-14 02:35:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2024-10-14 02:35:54,391 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 19 [2024-10-14 02:35:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:35:54,392 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2024-10-14 02:35:54,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 14 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 02:35:54,392 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2024-10-14 02:35:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 02:35:54,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:35:54,394 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:35:54,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 02:35:54,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:54,599 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:35:54,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:35:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 276407704, now seen corresponding path program 1 times [2024-10-14 02:35:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:35:54,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063843598] [2024-10-14 02:35:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:54,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:35:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:35:54,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880554827] [2024-10-14 02:35:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:54,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:54,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:35:54,620 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:35:54,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 02:35:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:54,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 02:35:54,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:35:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:35:55,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:35:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:35:55,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063843598] [2024-10-14 02:35:55,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:35:55,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880554827] [2024-10-14 02:35:55,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880554827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:35:55,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:35:55,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-10-14 02:35:55,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905517906] [2024-10-14 02:35:55,992 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 02:35:55,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 02:35:55,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:35:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 02:35:55,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-14 02:35:55,994 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 2 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) [2024-10-14 02:35:57,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-10-14 02:35:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:35:57,877 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2024-10-14 02:35:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 02:35:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 2 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 19 [2024-10-14 02:35:57,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:35:57,879 INFO L225 Difference]: With dead ends: 90 [2024-10-14 02:35:57,880 INFO L226 Difference]: Without dead ends: 81 [2024-10-14 02:35:57,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-14 02:35:57,881 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-14 02:35:57,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 77 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-14 02:35:57,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-14 02:35:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-14 02:35:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 67 states have internal predecessors, (75), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-14 02:35:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2024-10-14 02:35:57,903 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 19 [2024-10-14 02:35:57,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:35:57,905 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2024-10-14 02:35:57,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 10 states have internal predecessors, (16), 2 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) [2024-10-14 02:35:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2024-10-14 02:35:57,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-14 02:35:57,906 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:35:57,906 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:35:57,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 02:35:58,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:58,108 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:35:58,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:35:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2037077519, now seen corresponding path program 1 times [2024-10-14 02:35:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:35:58,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499238767] [2024-10-14 02:35:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:58,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:35:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:35:58,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49508637] [2024-10-14 02:35:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:58,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:58,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:35:58,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:35:58,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 02:35:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:35:58,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 02:35:58,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:35:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:35:58,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:35:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 02:35:58,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:35:58,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499238767] [2024-10-14 02:35:58,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:35:58,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49508637] [2024-10-14 02:35:58,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49508637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:35:58,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:35:58,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-10-14 02:35:58,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832473684] [2024-10-14 02:35:58,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:35:58,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 02:35:58,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:35:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 02:35:58,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 02:35:58,315 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 02:35:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:35:58,487 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2024-10-14 02:35:58,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 02:35:58,487 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-10-14 02:35:58,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:35:58,488 INFO L225 Difference]: With dead ends: 93 [2024-10-14 02:35:58,489 INFO L226 Difference]: Without dead ends: 78 [2024-10-14 02:35:58,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-14 02:35:58,491 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 02:35:58,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 02:35:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-14 02:35:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2024-10-14 02:35:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 64 states have internal predecessors, (70), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-14 02:35:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2024-10-14 02:35:58,511 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 25 [2024-10-14 02:35:58,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:35:58,511 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2024-10-14 02:35:58,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-14 02:35:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2024-10-14 02:35:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-14 02:35:58,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:35:58,512 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 02:35:58,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 02:35:58,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:58,713 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:35:58,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:35:58,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1530857210, now seen corresponding path program 2 times [2024-10-14 02:35:58,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:35:58,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740290559] [2024-10-14 02:35:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:35:58,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:35:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:35:58,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797010429] [2024-10-14 02:35:58,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:35:58,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:35:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:35:58,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:35:58,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 02:35:58,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:35:58,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:35:58,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 02:35:58,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:35:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 02:35:59,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:36:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 02:36:02,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:36:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740290559] [2024-10-14 02:36:02,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:36:02,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797010429] [2024-10-14 02:36:02,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797010429] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:36:02,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:36:02,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2024-10-14 02:36:02,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162253770] [2024-10-14 02:36:02,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:36:02,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 02:36:02,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:36:02,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 02:36:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-10-14 02:36:02,153 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 02:36:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:36:03,518 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2024-10-14 02:36:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 02:36:03,519 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2024-10-14 02:36:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:36:03,520 INFO L225 Difference]: With dead ends: 112 [2024-10-14 02:36:03,520 INFO L226 Difference]: Without dead ends: 110 [2024-10-14 02:36:03,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2024-10-14 02:36:03,521 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:36:03,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 112 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 02:36:03,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-14 02:36:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2024-10-14 02:36:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 87 states have (on average 1.160919540229885) internal successors, (101), 90 states have internal predecessors, (101), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 02:36:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2024-10-14 02:36:03,543 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 29 [2024-10-14 02:36:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:36:03,543 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2024-10-14 02:36:03,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-14 02:36:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2024-10-14 02:36:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 02:36:03,546 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:36:03,546 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 02:36:03,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 02:36:03,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:36:03,747 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:36:03,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:36:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2036959006, now seen corresponding path program 1 times [2024-10-14 02:36:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:36:03,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068767959] [2024-10-14 02:36:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:36:03,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:36:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:36:03,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410706199] [2024-10-14 02:36:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:36:03,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:36:03,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:36:03,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:36:03,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 02:36:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:36:03,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-14 02:36:03,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:36:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 02:36:04,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:36:04,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:36:04,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068767959] [2024-10-14 02:36:04,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:36:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410706199] [2024-10-14 02:36:04,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410706199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:36:04,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:36:04,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-10-14 02:36:04,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759641392] [2024-10-14 02:36:04,820 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 02:36:04,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 02:36:04,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:36:04,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 02:36:04,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-10-14 02:36:04,823 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 02:36:05,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:36:05,229 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2024-10-14 02:36:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 02:36:05,229 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2024-10-14 02:36:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:36:05,231 INFO L225 Difference]: With dead ends: 118 [2024-10-14 02:36:05,231 INFO L226 Difference]: Without dead ends: 116 [2024-10-14 02:36:05,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-10-14 02:36:05,232 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:36:05,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 203 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 02:36:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-14 02:36:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2024-10-14 02:36:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 94 states have internal predecessors, (104), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 02:36:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2024-10-14 02:36:05,248 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 39 [2024-10-14 02:36:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:36:05,248 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2024-10-14 02:36:05,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 02:36:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2024-10-14 02:36:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 02:36:05,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:36:05,250 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:36:05,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 02:36:05,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:36:05,455 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:36:05,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:36:05,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1536935426, now seen corresponding path program 2 times [2024-10-14 02:36:05,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:36:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979810251] [2024-10-14 02:36:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:36:05,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:36:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:36:05,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-14 02:36:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:36:05,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-14 02:36:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:36:05,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-14 02:36:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:36:05,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-14 02:36:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 02:36:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:36:05,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:36:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979810251] [2024-10-14 02:36:05,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979810251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:36:05,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715882183] [2024-10-14 02:36:05,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:36:05,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:36:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:36:05,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:36:05,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 02:36:05,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:36:05,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:36:05,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 02:36:05,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:36:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 02:36:05,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:36:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 02:36:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715882183] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:36:05,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 02:36:05,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 10 [2024-10-14 02:36:05,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156433743] [2024-10-14 02:36:05,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 02:36:05,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 02:36:05,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:36:05,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 02:36:05,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-10-14 02:36:05,903 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-14 02:36:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:36:05,972 INFO L93 Difference]: Finished difference Result 143 states and 163 transitions. [2024-10-14 02:36:05,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 02:36:05,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2024-10-14 02:36:05,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:36:05,974 INFO L225 Difference]: With dead ends: 143 [2024-10-14 02:36:05,974 INFO L226 Difference]: Without dead ends: 136 [2024-10-14 02:36:05,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-10-14 02:36:05,975 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 02:36:05,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 86 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 02:36:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-10-14 02:36:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-10-14 02:36:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 109 states have (on average 1.1376146788990826) internal successors, (124), 113 states have internal predecessors, (124), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-14 02:36:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2024-10-14 02:36:05,999 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 49 [2024-10-14 02:36:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:36:06,000 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2024-10-14 02:36:06,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-14 02:36:06,000 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2024-10-14 02:36:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 02:36:06,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:36:06,001 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 02:36:06,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 02:36:06,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 02:36:06,202 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:36:06,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:36:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1264768446, now seen corresponding path program 2 times [2024-10-14 02:36:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:36:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772575790] [2024-10-14 02:36:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:36:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:36:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:36:06,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750515641] [2024-10-14 02:36:06,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 02:36:06,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:36:06,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:36:06,239 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:36:06,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 02:36:06,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 02:36:06,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:36:06,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 02:36:06,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:36:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-14 02:36:07,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:36:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 37 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 02:36:25,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:36:25,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772575790] [2024-10-14 02:36:25,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:36:25,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750515641] [2024-10-14 02:36:25,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750515641] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 02:36:25,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 02:36:25,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 24 [2024-10-14 02:36:25,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120000111] [2024-10-14 02:36:25,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 02:36:25,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 02:36:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:36:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 02:36:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-10-14 02:36:25,742 INFO L87 Difference]: Start difference. First operand 136 states and 153 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-14 02:36:28,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-14 02:36:58,132 WARN L286 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 167 DAG size of output: 56 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-14 02:36:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:36:59,415 INFO L93 Difference]: Finished difference Result 204 states and 239 transitions. [2024-10-14 02:36:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 02:36:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 49 [2024-10-14 02:36:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:36:59,417 INFO L225 Difference]: With dead ends: 204 [2024-10-14 02:36:59,417 INFO L226 Difference]: Without dead ends: 202 [2024-10-14 02:36:59,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2024-10-14 02:36:59,418 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 29 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:36:59,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 274 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-10-14 02:36:59,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-10-14 02:36:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2024-10-14 02:36:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 159 states have (on average 1.169811320754717) internal successors, (186), 165 states have internal predecessors, (186), 24 states have call successors, (24), 14 states have call predecessors, (24), 14 states have return successors, (23), 18 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-14 02:36:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 233 transitions. [2024-10-14 02:36:59,447 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 233 transitions. Word has length 49 [2024-10-14 02:36:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:36:59,448 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 233 transitions. [2024-10-14 02:36:59,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 22 states have internal predecessors, (57), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-10-14 02:36:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 233 transitions. [2024-10-14 02:36:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 02:36:59,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:36:59,449 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2024-10-14 02:36:59,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 02:36:59,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:36:59,653 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:36:59,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:36:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1774241536, now seen corresponding path program 3 times [2024-10-14 02:36:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:36:59,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883878550] [2024-10-14 02:36:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:36:59,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:36:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:36:59,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077687797] [2024-10-14 02:36:59,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 02:36:59,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:36:59,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:36:59,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:36:59,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 02:36:59,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-14 02:36:59,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 02:36:59,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 02:36:59,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 02:37:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-14 02:37:00,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 02:37:01,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 02:37:01,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883878550] [2024-10-14 02:37:01,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 02:37:01,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077687797] [2024-10-14 02:37:01,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077687797] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 02:37:01,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-14 02:37:01,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-10-14 02:37:01,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273220098] [2024-10-14 02:37:01,011 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-14 02:37:01,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 02:37:01,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 02:37:01,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 02:37:01,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-10-14 02:37:01,012 INFO L87 Difference]: Start difference. First operand 198 states and 233 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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) [2024-10-14 02:37:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 02:37:02,398 INFO L93 Difference]: Finished difference Result 212 states and 247 transitions. [2024-10-14 02:37:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-14 02:37:02,398 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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) Word has length 49 [2024-10-14 02:37:02,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 02:37:02,400 INFO L225 Difference]: With dead ends: 212 [2024-10-14 02:37:02,400 INFO L226 Difference]: Without dead ends: 210 [2024-10-14 02:37:02,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2024-10-14 02:37:02,401 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 02:37:02,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 133 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 02:37:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-10-14 02:37:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 202. [2024-10-14 02:37:02,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 162 states have (on average 1.1666666666666667) internal successors, (189), 168 states have internal predecessors, (189), 24 states have call successors, (24), 15 states have call predecessors, (24), 15 states have return successors, (23), 18 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-14 02:37:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 236 transitions. [2024-10-14 02:37:02,426 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 236 transitions. Word has length 49 [2024-10-14 02:37:02,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 02:37:02,427 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 236 transitions. [2024-10-14 02:37:02,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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) [2024-10-14 02:37:02,427 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 236 transitions. [2024-10-14 02:37:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-14 02:37:02,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 02:37:02,428 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 02:37:02,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 02:37:02,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-14 02:37:02,628 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 02:37:02,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 02:37:02,629 INFO L85 PathProgramCache]: Analyzing trace with hash 17353766, now seen corresponding path program 3 times [2024-10-14 02:37:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 02:37:02,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881457027] [2024-10-14 02:37:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 02:37:02,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 02:37:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 02:37:02,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285912712] [2024-10-14 02:37:02,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 02:37:02,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 02:37:02,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 02:37:02,662 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 02:37:02,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 02:37:02,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-14 02:37:02,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2024-10-14 02:37:02,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 02:37:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 02:37:02,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 02:37:02,820 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 02:37:02,821 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 02:37:02,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 02:37:03,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 02:37:03,027 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2024-10-14 02:37:03,065 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 02:37:03,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 02:37:03 BoogieIcfgContainer [2024-10-14 02:37:03,067 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 02:37:03,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 02:37:03,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 02:37:03,068 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 02:37:03,069 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:35:47" (3/4) ... [2024-10-14 02:37:03,069 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-14 02:37:03,140 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 02:37:03,140 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 02:37:03,141 INFO L158 Benchmark]: Toolchain (without parser) took 75922.82ms. Allocated memory was 182.5MB in the beginning and 257.9MB in the end (delta: 75.5MB). Free memory was 129.0MB in the beginning and 77.4MB in the end (delta: 51.5MB). Peak memory consumption was 129.1MB. Max. memory is 16.1GB. [2024-10-14 02:37:03,141 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 02:37:03,141 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.17ms. Allocated memory is still 182.5MB. Free memory was 128.6MB in the beginning and 117.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 02:37:03,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.32ms. Allocated memory is still 182.5MB. Free memory was 117.0MB in the beginning and 115.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 02:37:03,142 INFO L158 Benchmark]: Boogie Preprocessor took 50.54ms. Allocated memory is still 182.5MB. Free memory was 115.6MB in the beginning and 113.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 02:37:03,142 INFO L158 Benchmark]: RCFGBuilder took 275.70ms. Allocated memory is still 182.5MB. Free memory was 113.9MB in the beginning and 102.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 02:37:03,142 INFO L158 Benchmark]: TraceAbstraction took 75210.77ms. Allocated memory was 182.5MB in the beginning and 257.9MB in the end (delta: 75.5MB). Free memory was 101.3MB in the beginning and 80.6MB in the end (delta: 20.8MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. [2024-10-14 02:37:03,142 INFO L158 Benchmark]: Witness Printer took 72.30ms. Allocated memory is still 257.9MB. Free memory was 80.6MB in the beginning and 77.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 02:37:03,147 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.17ms. Allocated memory is still 182.5MB. Free memory was 128.6MB in the beginning and 117.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.32ms. Allocated memory is still 182.5MB. Free memory was 117.0MB in the beginning and 115.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.54ms. Allocated memory is still 182.5MB. Free memory was 115.6MB in the beginning and 113.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 275.70ms. Allocated memory is still 182.5MB. Free memory was 113.9MB in the beginning and 102.1MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 75210.77ms. Allocated memory was 182.5MB in the beginning and 257.9MB in the end (delta: 75.5MB). Free memory was 101.3MB in the beginning and 80.6MB in the end (delta: 20.8MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. * Witness Printer took 72.30ms. Allocated memory is still 257.9MB. Free memory was 80.6MB in the beginning and 77.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L28] int counter = 0; [L30] int a, b; [L31] long long x, y, z; [L33] a = __VERIFIER_nondet_int() [L34] b = __VERIFIER_nondet_int() [L35] CALL assume_abort_if_not(b >= 1) [L18] COND FALSE !(!cond) VAL [counter=0] [L35] RET assume_abort_if_not(b >= 1) [L37] x = a [L38] y = b [L39] z = 0 VAL [a=-2, b=63, counter=0, x=-2, y=63, z=0] [L41] EXPR counter++ VAL [a=-2, b=63, counter=1, x=-2, y=63, z=0] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=1] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-2, b=63, counter=1, x=-2, y=63, z=0] [L43] COND FALSE !(!(y != 0)) VAL [a=-2, b=63, counter=1, x=-2, y=63, z=0] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-2, b=63, counter=1, x=-2, y=62, z=-2] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-2, b=63, counter=1, x=-4, y=31, z=-2] [L41] EXPR counter++ VAL [a=-2, b=63, counter=2, x=-4, y=31, z=-2] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=2] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-2, b=63, counter=2, x=-4, y=31, z=-2] [L43] COND FALSE !(!(y != 0)) VAL [a=-2, b=63, counter=2, x=-4, y=31, z=-2] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-2, b=63, counter=2, x=-4, y=30, z=-6] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-2, b=63, counter=2, x=-8, y=15, z=-6] [L41] EXPR counter++ VAL [a=-2, b=63, counter=3, x=-8, y=15, z=-6] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=3] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-2, b=63, counter=3, x=-8, y=15, z=-6] [L43] COND FALSE !(!(y != 0)) VAL [a=-2, b=63, counter=3, x=-8, y=15, z=-6] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-2, b=63, counter=3, x=-8, y=14, z=-14] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-2, b=63, counter=3, x=-16, y=7, z=-14] [L41] EXPR counter++ VAL [a=-2, b=63, counter=4, x=-16, y=7, z=-14] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=4] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-2, b=63, counter=4, x=-16, y=7, z=-14] [L43] COND FALSE !(!(y != 0)) VAL [a=-2, b=63, counter=4, x=-16, y=7, z=-14] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-2, b=63, counter=4, x=-16, y=6, z=-30] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-2, b=63, counter=4, x=-32, y=3, z=-30] [L41] EXPR counter++ VAL [a=-2, b=63, counter=5, x=-32, y=3, z=-30] [L41] COND TRUE counter++<5 [L42] CALL __VERIFIER_assert(z + x * y == (long long) a * b) VAL [\old(cond)=1, counter=5] [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L42] RET __VERIFIER_assert(z + x * y == (long long) a * b) VAL [a=-2, b=63, counter=5, x=-32, y=3, z=-30] [L43] COND FALSE !(!(y != 0)) VAL [a=-2, b=63, counter=5, x=-32, y=3, z=-30] [L46] COND TRUE y % 2 == 1 [L47] z = z + x [L48] y = y - 1 VAL [a=-2, b=63, counter=5, x=-32, y=2, z=-62] [L50] x = 2 * x [L51] y = y / 2 VAL [a=-2, b=63, counter=5, x=-64, y=1, z=-62] [L41] EXPR counter++ VAL [a=-2, b=63, counter=6, x=-64, y=1, z=-62] [L41] COND FALSE !(counter++<5) [L53] CALL __VERIFIER_assert(z == (long long) a * b) VAL [\old(cond)=0, counter=6] [L21] COND TRUE !(cond) VAL [\old(cond)=0, counter=6] [L23] reach_error() VAL [\old(cond)=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 75.1s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 41.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 13.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 186 mSDsluCounter, 1271 SdHoareTripleChecker+Invalid, 13.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1094 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1612 IncrementalHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 177 mSDtfsCounter, 1612 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 584 GetRequests, 389 SyntacticMatches, 15 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 43.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=12, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 26 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 30.4s InterpolantComputationTime, 747 NumberOfCodeBlocks, 747 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 561 ConstructedInterpolants, 18 QuantifiedInterpolants, 7003 SizeOfPredicates, 18 NumberOfNonLiveVariables, 986 ConjunctsInSsa, 200 ConjunctsInUnsatCore, 20 InterpolantComputations, 3 PerfectInterpolantSequences, 248/604 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-10-14 02:37:03,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE