./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/egcd2-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74e9855722264d342377b8ab219a69c32c582cc628f82167488f3dea5640534c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 02:08:56,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 02:08:56,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 02:08:56,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 02:08:56,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 02:08:56,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 02:08:56,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 02:08:56,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 02:08:56,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 02:08:56,691 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 02:08:56,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 02:08:56,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 02:08:56,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 02:08:56,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 02:08:56,695 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 02:08:56,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 02:08:56,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 02:08:56,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 02:08:56,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 02:08:56,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 02:08:56,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 02:08:56,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 02:08:56,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 02:08:56,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 02:08:56,700 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 02:08:56,700 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 02:08:56,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 02:08:56,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 02:08:56,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 02:08:56,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 02:08:56,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 02:08:56,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 02:08:56,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:08:56,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 02:08:56,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 02:08:56,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 02:08:56,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 02:08:56,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 02:08:56,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 02:08:56,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 02:08:56,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 02:08:56,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 02:08:56,707 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e9855722264d342377b8ab219a69c32c582cc628f82167488f3dea5640534c [2024-10-11 02:08:56,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 02:08:57,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 02:08:57,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 02:08:57,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 02:08:57,005 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 02:08:57,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2024-10-11 02:08:58,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 02:08:58,581 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 02:08:58,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound5.c [2024-10-11 02:08:58,594 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/30e112966/4b39f1707ac4432585d657aede6a2c5d/FLAG5563c906d [2024-10-11 02:08:58,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/30e112966/4b39f1707ac4432585d657aede6a2c5d [2024-10-11 02:08:58,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 02:08:58,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 02:08:58,993 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 02:08:58,993 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 02:08:58,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 02:08:58,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:08:58" (1/1) ... [2024-10-11 02:08:59,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf7aafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59, skipping insertion in model container [2024-10-11 02:08:59,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:08:58" (1/1) ... [2024-10-11 02:08:59,023 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 02:08:59,173 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/egcd2-ll_unwindbound5.c[490,503] [2024-10-11 02:08:59,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:08:59,203 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 02:08:59,212 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/egcd2-ll_unwindbound5.c[490,503] [2024-10-11 02:08:59,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:08:59,234 INFO L204 MainTranslator]: Completed translation [2024-10-11 02:08:59,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59 WrapperNode [2024-10-11 02:08:59,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 02:08:59,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 02:08:59,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 02:08:59,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 02:08:59,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,265 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2024-10-11 02:08:59,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 02:08:59,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 02:08:59,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 02:08:59,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 02:08:59,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,291 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 02:08:59,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 02:08:59,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 02:08:59,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 02:08:59,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 02:08:59,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (1/1) ... [2024-10-11 02:08:59,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:08:59,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:08:59,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 02:08:59,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 02:08:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 02:08:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-11 02:08:59,377 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-11 02:08:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 02:08:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 02:08:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 02:08:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 02:08:59,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 02:08:59,436 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 02:08:59,438 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 02:08:59,596 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-11 02:08:59,596 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 02:08:59,622 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 02:08:59,622 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 02:08:59,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:08:59 BoogieIcfgContainer [2024-10-11 02:08:59,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 02:08:59,625 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 02:08:59,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 02:08:59,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 02:08:59,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:08:58" (1/3) ... [2024-10-11 02:08:59,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a491100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:08:59, skipping insertion in model container [2024-10-11 02:08:59,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:08:59" (2/3) ... [2024-10-11 02:08:59,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a491100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:08:59, skipping insertion in model container [2024-10-11 02:08:59,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:08:59" (3/3) ... [2024-10-11 02:08:59,631 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound5.c [2024-10-11 02:08:59,648 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 02:08:59,649 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 02:08:59,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 02:08:59,733 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;@3fccea66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 02:08:59,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 02:08:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-11 02:08:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 02:08:59,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:08:59,749 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:08:59,750 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:08:59,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:08:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash -689848145, now seen corresponding path program 1 times [2024-10-11 02:08:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:08:59,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511828550] [2024-10-11 02:08:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:08:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:08:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:08:59,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:08:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:08:59,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:08:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:08:59,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:08:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:08:59,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:08:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:08:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 02:08:59,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:08:59,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511828550] [2024-10-11 02:08:59,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511828550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:08:59,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:08:59,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 02:08:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120026851] [2024-10-11 02:08:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:08:59,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 02:08:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:08:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 02:08:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 02:09:00,002 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:09:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:00,027 INFO L93 Difference]: Finished difference Result 60 states and 99 transitions. [2024-10-11 02:09:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 02:09:00,030 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-10-11 02:09:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:00,038 INFO L225 Difference]: With dead ends: 60 [2024-10-11 02:09:00,038 INFO L226 Difference]: Without dead ends: 29 [2024-10-11 02:09:00,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 02:09:00,044 INFO L432 NwaCegarLoop]: 40 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, 40 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 [2024-10-11 02:09:00,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:09:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-11 02:09:00,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-11 02:09:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 02:09:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2024-10-11 02:09:00,074 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 27 [2024-10-11 02:09:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:00,074 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2024-10-11 02:09:00,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:09:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2024-10-11 02:09:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 02:09:00,076 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:00,076 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:00,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 02:09:00,076 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:00,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1989097615, now seen corresponding path program 1 times [2024-10-11 02:09:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:00,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502343081] [2024-10-11 02:09:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:00,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:09:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:09:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:09:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:09:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 02:09:00,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:00,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502343081] [2024-10-11 02:09:00,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502343081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:09:00,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:09:00,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 02:09:00,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366356574] [2024-10-11 02:09:00,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:09:00,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 02:09:00,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:00,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 02:09:00,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 02:09:00,391 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 02:09:00,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:00,434 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2024-10-11 02:09:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 02:09:00,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2024-10-11 02:09:00,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:00,436 INFO L225 Difference]: With dead ends: 39 [2024-10-11 02:09:00,436 INFO L226 Difference]: Without dead ends: 31 [2024-10-11 02:09:00,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 02:09:00,438 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:00,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 97 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:09:00,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-11 02:09:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-11 02:09:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 02:09:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2024-10-11 02:09:00,448 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 28 [2024-10-11 02:09:00,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:00,450 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2024-10-11 02:09:00,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 02:09:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2024-10-11 02:09:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-11 02:09:00,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:00,451 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:00,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 02:09:00,452 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:00,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1539070609, now seen corresponding path program 1 times [2024-10-11 02:09:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:00,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951692557] [2024-10-11 02:09:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:09:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:09:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:09:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:09:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 02:09:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:00,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951692557] [2024-10-11 02:09:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951692557] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:09:00,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442005569] [2024-10-11 02:09:00,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:00,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:00,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:00,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:00,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 02:09:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:00,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 02:09:00,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 02:09:00,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:09:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442005569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:09:00,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:09:00,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2024-10-11 02:09:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234047146] [2024-10-11 02:09:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:09:00,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:09:00,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:00,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:09:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-11 02:09:00,957 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:09:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:01,069 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2024-10-11 02:09:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 02:09:01,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-10-11 02:09:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:01,071 INFO L225 Difference]: With dead ends: 48 [2024-10-11 02:09:01,071 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 02:09:01,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-11 02:09:01,073 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:01,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 138 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:09:01,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 02:09:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2024-10-11 02:09:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.32) internal successors, (33), 27 states have internal predecessors, (33), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-11 02:09:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2024-10-11 02:09:01,095 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 29 [2024-10-11 02:09:01,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:01,095 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2024-10-11 02:09:01,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:09:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2024-10-11 02:09:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 02:09:01,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:01,097 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:01,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 02:09:01,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:01,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:01,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:01,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1634889762, now seen corresponding path program 1 times [2024-10-11 02:09:01,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:01,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569605949] [2024-10-11 02:09:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:01,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125318321] [2024-10-11 02:09:01,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:01,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:01,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:01,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:01,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 02:09:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:01,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:09:01,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 02:09:01,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:09:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569605949] [2024-10-11 02:09:01,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:09:01,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125318321] [2024-10-11 02:09:01,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125318321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:09:01,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:09:01,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 02:09:01,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920556658] [2024-10-11 02:09:01,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:09:01,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:09:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:01,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:09:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 02:09:01,435 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 02:09:01,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:01,491 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2024-10-11 02:09:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:09:01,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2024-10-11 02:09:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:01,494 INFO L225 Difference]: With dead ends: 65 [2024-10-11 02:09:01,494 INFO L226 Difference]: Without dead ends: 63 [2024-10-11 02:09:01,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:09:01,496 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:01,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:09:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-11 02:09:01,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2024-10-11 02:09:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-11 02:09:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2024-10-11 02:09:01,508 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 75 transitions. Word has length 31 [2024-10-11 02:09:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:01,509 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-10-11 02:09:01,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 02:09:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 75 transitions. [2024-10-11 02:09:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 02:09:01,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:01,510 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:01,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 02:09:01,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:01,715 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:01,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:01,715 INFO L85 PathProgramCache]: Analyzing trace with hash -254153455, now seen corresponding path program 1 times [2024-10-11 02:09:01,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:01,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679373277] [2024-10-11 02:09:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:01,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:01,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:09:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:01,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:09:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:01,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:09:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:01,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:09:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:01,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-11 02:09:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 02:09:01,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:01,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679373277] [2024-10-11 02:09:01,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679373277] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:09:01,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602817656] [2024-10-11 02:09:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:01,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:01,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:01,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:01,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 02:09:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:01,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 02:09:01,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 02:09:01,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:09:01,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602817656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:09:01,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:09:01,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-10-11 02:09:01,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483056898] [2024-10-11 02:09:01,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:09:01,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:09:02,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:02,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:09:02,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:09:02,002 INFO L87 Difference]: Start difference. First operand 54 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 02:09:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:02,075 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2024-10-11 02:09:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:09:02,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2024-10-11 02:09:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:02,077 INFO L225 Difference]: With dead ends: 62 [2024-10-11 02:09:02,077 INFO L226 Difference]: Without dead ends: 58 [2024-10-11 02:09:02,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-11 02:09:02,078 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:02,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 135 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:09:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-11 02:09:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2024-10-11 02:09:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 38 states have internal predecessors, (44), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-11 02:09:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2024-10-11 02:09:02,096 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 34 [2024-10-11 02:09:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:02,097 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2024-10-11 02:09:02,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 02:09:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2024-10-11 02:09:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 02:09:02,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:02,099 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:02,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 02:09:02,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:02,304 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:02,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash 753217482, now seen corresponding path program 1 times [2024-10-11 02:09:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068893416] [2024-10-11 02:09:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:02,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:09:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:02,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:09:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:02,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:09:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:02,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:09:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 02:09:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:02,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068893416] [2024-10-11 02:09:02,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068893416] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:09:02,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:09:02,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 02:09:02,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173152913] [2024-10-11 02:09:02,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:09:02,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:09:02,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:09:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:09:02,416 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 02:09:02,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:02,459 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2024-10-11 02:09:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 02:09:02,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2024-10-11 02:09:02,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:02,461 INFO L225 Difference]: With dead ends: 83 [2024-10-11 02:09:02,462 INFO L226 Difference]: Without dead ends: 57 [2024-10-11 02:09:02,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:09:02,464 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:02,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 120 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:09:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-11 02:09:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-11 02:09:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 38 states have internal predecessors, (43), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-11 02:09:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-10-11 02:09:02,480 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 34 [2024-10-11 02:09:02,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:02,482 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-11 02:09:02,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 02:09:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-10-11 02:09:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 02:09:02,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:02,483 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:02,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 02:09:02,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:02,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash 439925314, now seen corresponding path program 1 times [2024-10-11 02:09:02,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:02,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929154180] [2024-10-11 02:09:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:02,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:02,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209884218] [2024-10-11 02:09:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:02,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:02,502 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:02,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 02:09:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:02,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 02:09:02,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 02:09:02,727 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:09:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929154180] [2024-10-11 02:09:02,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:09:02,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209884218] [2024-10-11 02:09:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209884218] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:09:02,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:09:02,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 02:09:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168631112] [2024-10-11 02:09:02,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:09:02,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:09:02,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:02,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:09:02,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 02:09:02,729 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-11 02:09:02,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:02,794 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2024-10-11 02:09:02,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:09:02,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2024-10-11 02:09:02,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:02,795 INFO L225 Difference]: With dead ends: 64 [2024-10-11 02:09:02,795 INFO L226 Difference]: Without dead ends: 62 [2024-10-11 02:09:02,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:09:02,796 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:02,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 123 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:09:02,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-11 02:09:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-10-11 02:09:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 41 states have internal predecessors, (46), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-11 02:09:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2024-10-11 02:09:02,806 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 46 [2024-10-11 02:09:02,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:02,806 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2024-10-11 02:09:02,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-11 02:09:02,807 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2024-10-11 02:09:02,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-11 02:09:02,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:02,808 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:02,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 02:09:03,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 02:09:03,008 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:03,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash -982723610, now seen corresponding path program 1 times [2024-10-11 02:09:03,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:03,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900276238] [2024-10-11 02:09:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:03,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:03,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699249914] [2024-10-11 02:09:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:03,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:03,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:03,027 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:03,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 02:09:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 02:09:03,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 02:09:03,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-11 02:09:03,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900276238] [2024-10-11 02:09:03,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:09:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699249914] [2024-10-11 02:09:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699249914] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 02:09:03,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:09:03,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-11 02:09:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760116913] [2024-10-11 02:09:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:09:03,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:09:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:09:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 02:09:03,275 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 02:09:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:03,319 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2024-10-11 02:09:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:09:03,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2024-10-11 02:09:03,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:03,321 INFO L225 Difference]: With dead ends: 67 [2024-10-11 02:09:03,321 INFO L226 Difference]: Without dead ends: 65 [2024-10-11 02:09:03,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 02:09:03,322 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:03,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:09:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-11 02:09:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2024-10-11 02:09:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 37 states have internal predecessors, (43), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-11 02:09:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2024-10-11 02:09:03,332 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 54 [2024-10-11 02:09:03,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:03,334 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2024-10-11 02:09:03,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-10-11 02:09:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2024-10-11 02:09:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-11 02:09:03,335 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:03,335 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:03,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 02:09:03,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:03,536 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:03,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1428774585, now seen corresponding path program 1 times [2024-10-11 02:09:03,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:03,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173895285] [2024-10-11 02:09:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:03,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:09:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:09:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:09:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:09:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-11 02:09:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-11 02:09:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 02:09:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-11 02:09:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 02:09:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173895285] [2024-10-11 02:09:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173895285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:09:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656466050] [2024-10-11 02:09:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:03,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:03,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:03,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:03,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 02:09:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:03,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:09:03,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 02:09:03,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 02:09:03,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656466050] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:09:03,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:09:03,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 11 [2024-10-11 02:09:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672567787] [2024-10-11 02:09:03,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:09:03,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 02:09:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 02:09:03,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-11 02:09:03,929 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-11 02:09:04,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:04,070 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2024-10-11 02:09:04,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 02:09:04,071 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 55 [2024-10-11 02:09:04,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:04,072 INFO L225 Difference]: With dead ends: 168 [2024-10-11 02:09:04,072 INFO L226 Difference]: Without dead ends: 160 [2024-10-11 02:09:04,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-11 02:09:04,073 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 56 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:04,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 180 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:09:04,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-11 02:09:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2024-10-11 02:09:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 102 states have internal predecessors, (117), 34 states have call successors, (34), 20 states have call predecessors, (34), 20 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-11 02:09:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2024-10-11 02:09:04,107 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 55 [2024-10-11 02:09:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:04,108 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2024-10-11 02:09:04,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-11 02:09:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2024-10-11 02:09:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 02:09:04,109 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:04,109 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:04,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 02:09:04,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 02:09:04,310 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:04,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1348925863, now seen corresponding path program 1 times [2024-10-11 02:09:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:04,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417878020] [2024-10-11 02:09:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:09:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:09:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:09:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:09:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-11 02:09:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-11 02:09:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 02:09:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-11 02:09:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-11 02:09:04,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:04,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417878020] [2024-10-11 02:09:04,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417878020] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:09:04,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566686179] [2024-10-11 02:09:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:04,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:04,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:04,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:04,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 02:09:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:04,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 02:09:04,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-11 02:09:04,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-11 02:09:04,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566686179] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:09:04,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:09:04,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-10-11 02:09:04,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648295773] [2024-10-11 02:09:04,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:09:04,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 02:09:04,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 02:09:04,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:09:04,662 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 02:09:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:04,850 INFO L93 Difference]: Finished difference Result 220 states and 287 transitions. [2024-10-11 02:09:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 02:09:04,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2024-10-11 02:09:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:04,853 INFO L225 Difference]: With dead ends: 220 [2024-10-11 02:09:04,853 INFO L226 Difference]: Without dead ends: 206 [2024-10-11 02:09:04,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-10-11 02:09:04,854 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 57 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:04,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 329 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:09:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-10-11 02:09:04,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 184. [2024-10-11 02:09:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.2166666666666666) internal successors, (146), 122 states have internal predecessors, (146), 44 states have call successors, (44), 19 states have call predecessors, (44), 19 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-11 02:09:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 232 transitions. [2024-10-11 02:09:04,882 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 232 transitions. Word has length 56 [2024-10-11 02:09:04,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:04,883 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 232 transitions. [2024-10-11 02:09:04,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 02:09:04,883 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 232 transitions. [2024-10-11 02:09:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-11 02:09:04,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:04,884 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:04,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 02:09:05,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:05,085 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:05,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash -848672706, now seen corresponding path program 1 times [2024-10-11 02:09:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190295080] [2024-10-11 02:09:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:05,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:09:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:09:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:09:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:09:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-11 02:09:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-11 02:09:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 02:09:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-11 02:09:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 02:09:05,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190295080] [2024-10-11 02:09:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190295080] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:09:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162078527] [2024-10-11 02:09:05,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:05,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:05,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:05,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:05,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 02:09:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:09:05,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 02:09:05,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 02:09:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162078527] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:09:05,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:09:05,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 11 [2024-10-11 02:09:05,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536000157] [2024-10-11 02:09:05,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:09:05,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 02:09:05,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:05,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 02:09:05,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-11 02:09:05,420 INFO L87 Difference]: Start difference. First operand 184 states and 232 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-11 02:09:05,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:05,558 INFO L93 Difference]: Finished difference Result 264 states and 345 transitions. [2024-10-11 02:09:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 02:09:05,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 58 [2024-10-11 02:09:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:05,560 INFO L225 Difference]: With dead ends: 264 [2024-10-11 02:09:05,561 INFO L226 Difference]: Without dead ends: 192 [2024-10-11 02:09:05,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-10-11 02:09:05,562 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 43 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:05,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 140 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:09:05,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-11 02:09:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2024-10-11 02:09:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 128 states have internal predecessors, (149), 44 states have call successors, (44), 19 states have call predecessors, (44), 19 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-11 02:09:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 235 transitions. [2024-10-11 02:09:05,585 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 235 transitions. Word has length 58 [2024-10-11 02:09:05,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:05,586 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 235 transitions. [2024-10-11 02:09:05,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 5 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-10-11 02:09:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 235 transitions. [2024-10-11 02:09:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 02:09:05,587 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:05,587 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:05,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 02:09:05,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 02:09:05,792 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:05,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash -421956392, now seen corresponding path program 1 times [2024-10-11 02:09:05,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:05,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688068904] [2024-10-11 02:09:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:05,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:05,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676312647] [2024-10-11 02:09:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:05,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:05,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:05,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:05,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 02:09:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:05,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-11 02:09:05,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-11 02:09:06,158 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-11 02:09:06,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:06,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688068904] [2024-10-11 02:09:06,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:09:06,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676312647] [2024-10-11 02:09:06,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676312647] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:09:06,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 02:09:06,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12 [2024-10-11 02:09:06,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511811919] [2024-10-11 02:09:06,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 02:09:06,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 02:09:06,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:06,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 02:09:06,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-11 02:09:06,297 INFO L87 Difference]: Start difference. First operand 190 states and 235 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-10-11 02:09:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:06,486 INFO L93 Difference]: Finished difference Result 222 states and 281 transitions. [2024-10-11 02:09:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 02:09:06,487 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 63 [2024-10-11 02:09:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:06,488 INFO L225 Difference]: With dead ends: 222 [2024-10-11 02:09:06,489 INFO L226 Difference]: Without dead ends: 218 [2024-10-11 02:09:06,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-11 02:09:06,490 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 41 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:06,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 307 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:09:06,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-10-11 02:09:06,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2024-10-11 02:09:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 142 states have (on average 1.204225352112676) internal successors, (171), 145 states have internal predecessors, (171), 52 states have call successors, (52), 21 states have call predecessors, (52), 21 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-11 02:09:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 272 transitions. [2024-10-11 02:09:06,518 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 272 transitions. Word has length 63 [2024-10-11 02:09:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:06,518 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 272 transitions. [2024-10-11 02:09:06,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2024-10-11 02:09:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 272 transitions. [2024-10-11 02:09:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 02:09:06,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:06,520 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:06,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 02:09:06,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:06,722 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:06,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash -245166072, now seen corresponding path program 2 times [2024-10-11 02:09:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:06,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680573415] [2024-10-11 02:09:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:06,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003223601] [2024-10-11 02:09:06,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 02:09:06,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:06,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:06,747 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:06,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 02:09:06,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 02:09:06,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 02:09:06,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 02:09:06,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-11 02:09:07,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 02:09:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680573415] [2024-10-11 02:09:07,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:09:07,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003223601] [2024-10-11 02:09:07,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003223601] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:09:07,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 02:09:07,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2024-10-11 02:09:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114639330] [2024-10-11 02:09:07,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 02:09:07,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 02:09:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 02:09:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-10-11 02:09:07,547 INFO L87 Difference]: Start difference. First operand 216 states and 272 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-10-11 02:09:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:09,057 INFO L93 Difference]: Finished difference Result 370 states and 515 transitions. [2024-10-11 02:09:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 02:09:09,057 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 68 [2024-10-11 02:09:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:09,060 INFO L225 Difference]: With dead ends: 370 [2024-10-11 02:09:09,060 INFO L226 Difference]: Without dead ends: 368 [2024-10-11 02:09:09,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2024-10-11 02:09:09,063 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 120 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:09,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 327 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 02:09:09,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-10-11 02:09:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 323. [2024-10-11 02:09:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 209 states have (on average 1.277511961722488) internal successors, (267), 212 states have internal predecessors, (267), 88 states have call successors, (88), 25 states have call predecessors, (88), 25 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-10-11 02:09:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 440 transitions. [2024-10-11 02:09:09,140 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 440 transitions. Word has length 68 [2024-10-11 02:09:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:09,141 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 440 transitions. [2024-10-11 02:09:09,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 8 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-10-11 02:09:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 440 transitions. [2024-10-11 02:09:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 02:09:09,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:09,145 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:09,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 02:09:09,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 02:09:09,345 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:09,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash -441972072, now seen corresponding path program 3 times [2024-10-11 02:09:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460361961] [2024-10-11 02:09:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:09,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:09,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022323959] [2024-10-11 02:09:09,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 02:09:09,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:09,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:09,366 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:09,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 02:09:09,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 02:09:09,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 02:09:09,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-11 02:09:09,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 42 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-11 02:09:10,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:30,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460361961] [2024-10-11 02:09:30,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:09:30,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022323959] [2024-10-11 02:09:30,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022323959] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:09:30,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:09:30,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-11 02:09:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797870674] [2024-10-11 02:09:30,157 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 02:09:30,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 02:09:30,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:30,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 02:09:30,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-10-11 02:09:30,159 INFO L87 Difference]: Start difference. First operand 323 states and 440 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-11 02:09:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:30,937 INFO L93 Difference]: Finished difference Result 338 states and 453 transitions. [2024-10-11 02:09:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 02:09:30,938 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 73 [2024-10-11 02:09:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:30,940 INFO L225 Difference]: With dead ends: 338 [2024-10-11 02:09:30,941 INFO L226 Difference]: Without dead ends: 334 [2024-10-11 02:09:30,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2024-10-11 02:09:30,942 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 47 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:30,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 274 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 02:09:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-10-11 02:09:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2024-10-11 02:09:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 217 states have (on average 1.262672811059908) internal successors, (274), 219 states have internal predecessors, (274), 88 states have call successors, (88), 28 states have call predecessors, (88), 27 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-10-11 02:09:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 447 transitions. [2024-10-11 02:09:31,000 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 447 transitions. Word has length 73 [2024-10-11 02:09:31,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:31,000 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 447 transitions. [2024-10-11 02:09:31,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-11 02:09:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 447 transitions. [2024-10-11 02:09:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 02:09:31,001 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:31,002 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:31,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 02:09:31,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 02:09:31,206 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:31,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2054740817, now seen corresponding path program 1 times [2024-10-11 02:09:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:31,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163624919] [2024-10-11 02:09:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:31,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982970644] [2024-10-11 02:09:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:31,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:31,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:31,224 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:31,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 02:09:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:31,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-11 02:09:31,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-11 02:09:31,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-10-11 02:09:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163624919] [2024-10-11 02:09:32,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:09:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982970644] [2024-10-11 02:09:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982970644] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:09:32,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 02:09:32,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-10-11 02:09:32,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865410785] [2024-10-11 02:09:32,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 02:09:32,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-11 02:09:32,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:32,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-11 02:09:32,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-10-11 02:09:32,487 INFO L87 Difference]: Start difference. First operand 333 states and 447 transitions. Second operand has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-10-11 02:09:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:35,418 INFO L93 Difference]: Finished difference Result 549 states and 802 transitions. [2024-10-11 02:09:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 02:09:35,419 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 79 [2024-10-11 02:09:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:35,422 INFO L225 Difference]: With dead ends: 549 [2024-10-11 02:09:35,422 INFO L226 Difference]: Without dead ends: 543 [2024-10-11 02:09:35,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2024-10-11 02:09:35,424 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 118 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:35,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 703 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-11 02:09:35,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-10-11 02:09:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 496. [2024-10-11 02:09:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 310 states have (on average 1.3451612903225807) internal successors, (417), 313 states have internal predecessors, (417), 156 states have call successors, (156), 29 states have call predecessors, (156), 29 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154) [2024-10-11 02:09:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 727 transitions. [2024-10-11 02:09:35,532 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 727 transitions. Word has length 79 [2024-10-11 02:09:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:35,533 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 727 transitions. [2024-10-11 02:09:35,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2024-10-11 02:09:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 727 transitions. [2024-10-11 02:09:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-11 02:09:35,534 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:35,535 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:35,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 02:09:35,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 02:09:35,735 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:35,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1270806006, now seen corresponding path program 1 times [2024-10-11 02:09:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:35,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017930579] [2024-10-11 02:09:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:09:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-11 02:09:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-11 02:09:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 02:09:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-11 02:09:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-11 02:09:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 02:09:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-11 02:09:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-11 02:09:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 02:09:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-11 02:09:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-11 02:09:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-10-11 02:09:35,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:35,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017930579] [2024-10-11 02:09:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017930579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:09:35,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:09:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 02:09:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564308573] [2024-10-11 02:09:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:09:35,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:09:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:09:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 02:09:35,859 INFO L87 Difference]: Start difference. First operand 496 states and 727 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-11 02:09:36,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:36,064 INFO L93 Difference]: Finished difference Result 833 states and 1283 transitions. [2024-10-11 02:09:36,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 02:09:36,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2024-10-11 02:09:36,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:36,071 INFO L225 Difference]: With dead ends: 833 [2024-10-11 02:09:36,071 INFO L226 Difference]: Without dead ends: 575 [2024-10-11 02:09:36,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 02:09:36,073 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:36,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 175 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:09:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-10-11 02:09:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 480. [2024-10-11 02:09:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 298 states have (on average 1.3187919463087248) internal successors, (393), 301 states have internal predecessors, (393), 152 states have call successors, (152), 29 states have call predecessors, (152), 29 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2024-10-11 02:09:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 695 transitions. [2024-10-11 02:09:36,215 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 695 transitions. Word has length 88 [2024-10-11 02:09:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:36,215 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 695 transitions. [2024-10-11 02:09:36,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-11 02:09:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 695 transitions. [2024-10-11 02:09:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-11 02:09:36,217 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:36,217 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:36,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 02:09:36,218 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:36,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:36,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1858222944, now seen corresponding path program 1 times [2024-10-11 02:09:36,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:36,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199871036] [2024-10-11 02:09:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:36,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:36,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409626112] [2024-10-11 02:09:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:36,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:36,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:36,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 02:09:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:09:36,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-11 02:09:36,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:09:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 51 proven. 32 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-10-11 02:09:37,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:09:37,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:09:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199871036] [2024-10-11 02:09:37,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:09:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409626112] [2024-10-11 02:09:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409626112] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:09:37,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:09:37,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-10-11 02:09:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931556092] [2024-10-11 02:09:37,832 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 02:09:37,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 02:09:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:09:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 02:09:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-10-11 02:09:37,833 INFO L87 Difference]: Start difference. First operand 480 states and 695 transitions. Second operand has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-10-11 02:09:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:09:38,659 INFO L93 Difference]: Finished difference Result 493 states and 706 transitions. [2024-10-11 02:09:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 02:09:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 96 [2024-10-11 02:09:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:09:38,663 INFO L225 Difference]: With dead ends: 493 [2024-10-11 02:09:38,663 INFO L226 Difference]: Without dead ends: 491 [2024-10-11 02:09:38,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2024-10-11 02:09:38,664 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 37 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 02:09:38,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 402 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 02:09:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-10-11 02:09:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 488. [2024-10-11 02:09:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 304 states have (on average 1.3125) internal successors, (399), 307 states have internal predecessors, (399), 152 states have call successors, (152), 31 states have call predecessors, (152), 31 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2024-10-11 02:09:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 701 transitions. [2024-10-11 02:09:38,785 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 701 transitions. Word has length 96 [2024-10-11 02:09:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:09:38,786 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 701 transitions. [2024-10-11 02:09:38,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-10-11 02:09:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 701 transitions. [2024-10-11 02:09:38,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-11 02:09:38,788 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:09:38,788 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:38,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-11 02:09:38,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 02:09:38,989 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:09:38,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:09:38,989 INFO L85 PathProgramCache]: Analyzing trace with hash -615201371, now seen corresponding path program 1 times [2024-10-11 02:09:38,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:09:38,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544061041] [2024-10-11 02:09:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:09:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:09:39,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944101724] [2024-10-11 02:09:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:09:39,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:09:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:09:39,016 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:09:39,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 02:09:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 02:09:39,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 02:09:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 02:09:39,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 02:09:39,168 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 02:09:39,169 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-11 02:09:39,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 02:09:39,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 02:09:39,375 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:09:39,444 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 02:09:39,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:09:39 BoogieIcfgContainer [2024-10-11 02:09:39,446 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 02:09:39,447 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 02:09:39,447 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 02:09:39,447 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 02:09:39,448 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:08:59" (3/4) ... [2024-10-11 02:09:39,448 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-11 02:09:39,534 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 02:09:39,534 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 02:09:39,535 INFO L158 Benchmark]: Toolchain (without parser) took 40546.16ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 97.6MB in the beginning and 162.8MB in the end (delta: -65.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 02:09:39,535 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 02:09:39,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.24ms. Allocated memory is still 151.0MB. Free memory was 97.3MB in the beginning and 84.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 02:09:39,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.94ms. Allocated memory is still 151.0MB. Free memory was 84.7MB in the beginning and 82.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 02:09:39,536 INFO L158 Benchmark]: Boogie Preprocessor took 34.54ms. Allocated memory is still 151.0MB. Free memory was 82.9MB in the beginning and 80.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 02:09:39,536 INFO L158 Benchmark]: RCFGBuilder took 321.68ms. Allocated memory is still 151.0MB. Free memory was 80.8MB in the beginning and 65.9MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-11 02:09:39,536 INFO L158 Benchmark]: TraceAbstraction took 39821.23ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 65.2MB in the beginning and 168.0MB in the end (delta: -102.8MB). Peak memory consumption was 66.6MB. Max. memory is 16.1GB. [2024-10-11 02:09:39,537 INFO L158 Benchmark]: Witness Printer took 87.60ms. Allocated memory is still 203.4MB. Free memory was 168.0MB in the beginning and 162.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 02:09:39,538 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.24ms. Allocated memory is still 151.0MB. Free memory was 97.3MB in the beginning and 84.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.94ms. Allocated memory is still 151.0MB. Free memory was 84.7MB in the beginning and 82.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.54ms. Allocated memory is still 151.0MB. Free memory was 82.9MB in the beginning and 80.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 321.68ms. Allocated memory is still 151.0MB. Free memory was 80.8MB in the beginning and 65.9MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 39821.23ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 65.2MB in the beginning and 168.0MB in the end (delta: -102.8MB). Peak memory consumption was 66.6MB. Max. memory is 16.1GB. * Witness Printer took 87.60ms. Allocated memory is still 203.4MB. Free memory was 168.0MB in the beginning and 162.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=3, y=4] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=3, y=4] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [a=3, b=4, counter=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [a=3, b=4, counter=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [a=3, b=4, counter=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L40] EXPR counter++ VAL [a=3, b=4, counter=1, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [a=3, b=4, c=3, counter=1, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L46] EXPR counter++ VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L46] COND TRUE counter++<5 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L51] COND TRUE !(c >= b) VAL [a=3, b=4, c=3, counter=2, k=0, p=1, q=0, r=0, s=1, x=3, xy=12, y=4, yy=16] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k [L40] EXPR counter++ VAL [a=4, b=3, counter=3, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L40] COND TRUE counter++<5 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [a=4, b=3, c=4, counter=3, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L46] EXPR counter++ VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L46] COND TRUE counter++<5 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=4, b=3, c=4, counter=4, k=0, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [a=4, b=3, c=1, counter=4, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L46] EXPR counter++ VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L46] COND TRUE counter++<5 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L51] COND TRUE !(c >= b) VAL [a=4, b=3, c=1, counter=5, k=1, p=0, q=1, r=1, s=0, x=3, xy=12, y=4, yy=16] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k [L40] EXPR counter++ VAL [a=3, b=1, counter=6, p=1, q=-1, r=0, s=1, x=3, xy=12, y=4, yy=16] [L40] COND FALSE !(counter++<5) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, counter=6] [L11] COND TRUE !(cond) VAL [\old(cond)=0, counter=6] [L13] reach_error() VAL [\old(cond)=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.7s, OverallIterations: 18, TraceHistogramMax: 13, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 649 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 3739 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3069 mSDsCounter, 292 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2428 IncrementalHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 292 mSolverCounterUnsat, 670 mSDtfsCounter, 2428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1436 GetRequests, 1220 SyntacticMatches, 12 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=496occurred in iteration=15, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 17 MinimizatonAttempts, 244 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 27.0s InterpolantComputationTime, 1871 NumberOfCodeBlocks, 1851 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1555 ConstructedInterpolants, 0 QuantifiedInterpolants, 6687 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2081 ConjunctsInSsa, 271 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 1988/2186 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! [2024-10-11 02:09:39,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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