./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1af9610c3f2ac44e456633c84d2e8d0495857443026005d5daf994731366c726 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:35:02,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:35:02,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:35:02,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:35:02,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:35:02,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:35:02,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:35:02,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:35:02,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:35:02,555 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:35:02,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:35:02,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:35:02,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:35:02,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:35:02,557 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:35:02,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:35:02,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:35:02,558 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:35:02,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:35:02,558 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:35:02,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:35:02,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:35:02,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:35:02,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:35:02,560 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:35:02,560 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:35:02,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:35:02,561 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:35:02,561 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:35:02,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:35:02,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:35:02,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:35:02,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:35:02,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:35:02,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:35:02,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:35:02,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:35:02,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:35:02,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:35:02,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:35:02,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:35:02,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:35:02,570 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1af9610c3f2ac44e456633c84d2e8d0495857443026005d5daf994731366c726 [2024-11-09 22:35:02,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:35:02,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:35:02,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:35:02,859 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:35:02,860 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:35:02,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c [2024-11-09 22:35:04,333 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:35:04,513 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:35:04,513 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound10.c [2024-11-09 22:35:04,520 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e7577d5/b3c599957751490ea3b1425cd1a509a0/FLAG3b2d0409b [2024-11-09 22:35:04,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e7577d5/b3c599957751490ea3b1425cd1a509a0 [2024-11-09 22:35:04,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:35:04,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:35:04,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:35:04,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:35:04,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:35:04,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:04" (1/1) ... [2024-11-09 22:35:04,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7798b11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:04, skipping insertion in model container [2024-11-09 22:35:04,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:04" (1/1) ... [2024-11-09 22:35:04,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:35:05,147 WARN L250 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_valuebound10.c[490,503] [2024-11-09 22:35:05,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:35:05,192 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:35:05,205 WARN L250 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_valuebound10.c[490,503] [2024-11-09 22:35:05,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:35:05,240 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:35:05,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05 WrapperNode [2024-11-09 22:35:05,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:35:05,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:35:05,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:35:05,243 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:35:05,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,272 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2024-11-09 22:35:05,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:35:05,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:35:05,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:35:05,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:35:05,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,296 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 22:35:05,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,300 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,301 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:35:05,306 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:35:05,306 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:35:05,306 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:35:05,307 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (1/1) ... [2024-11-09 22:35:05,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:35:05,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:05,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 22:35:05,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 22:35:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:35:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 22:35:05,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 22:35:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:35:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:35:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:35:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:35:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:35:05,497 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:35:05,499 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:35:05,737 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 22:35:05,737 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:35:05,755 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:35:05,755 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:35:05,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:35:05 BoogieIcfgContainer [2024-11-09 22:35:05,756 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:35:05,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:35:05,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:35:05,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:35:05,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:35:04" (1/3) ... [2024-11-09 22:35:05,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9ba865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:05, skipping insertion in model container [2024-11-09 22:35:05,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:05" (2/3) ... [2024-11-09 22:35:05,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9ba865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:05, skipping insertion in model container [2024-11-09 22:35:05,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:35:05" (3/3) ... [2024-11-09 22:35:05,770 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound10.c [2024-11-09 22:35:05,789 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:35:05,789 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:35:05,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:35:05,859 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;@5bd787fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:35:05,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:35:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 24 states have internal predecessors, (31), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 22:35:05,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 22:35:05,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:05,870 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:05,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:05,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:05,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1415255888, now seen corresponding path program 1 times [2024-11-09 22:35:05,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:05,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407723325] [2024-11-09 22:35:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:05,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:35:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:35:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:35:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 22:35:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 22:35:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 22:35:06,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:06,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407723325] [2024-11-09 22:35:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407723325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:06,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:06,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:35:06,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795490291] [2024-11-09 22:35:06,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:06,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:35:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:35:06,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:35:06,107 INFO L87 Difference]: Start difference. First operand has 38 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 24 states have internal predecessors, (31), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:06,128 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2024-11-09 22:35:06,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:35:06,130 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2024-11-09 22:35:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:06,136 INFO L225 Difference]: With dead ends: 73 [2024-11-09 22:35:06,136 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 22:35:06,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:35:06,142 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:06,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 22:35:06,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-09 22:35:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 22:35:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-09 22:35:06,178 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 40 [2024-11-09 22:35:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:06,178 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-09 22:35:06,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 22:35:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-09 22:35:06,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 22:35:06,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:06,181 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:06,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:35:06,181 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:06,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:06,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1274504883, now seen corresponding path program 1 times [2024-11-09 22:35:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:06,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388133761] [2024-11-09 22:35:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:35:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:35:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:35:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 22:35:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 22:35:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 22:35:06,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:06,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388133761] [2024-11-09 22:35:06,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388133761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:06,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584343872] [2024-11-09 22:35:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:06,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:06,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:06,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:06,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:35:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:06,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 22:35:06,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-09 22:35:07,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:07,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584343872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:07,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:35:07,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2024-11-09 22:35:07,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292450734] [2024-11-09 22:35:07,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:07,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 22:35:07,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:07,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 22:35:07,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:35:07,197 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-09 22:35:07,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:07,437 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2024-11-09 22:35:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 22:35:07,438 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 42 [2024-11-09 22:35:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:07,439 INFO L225 Difference]: With dead ends: 58 [2024-11-09 22:35:07,440 INFO L226 Difference]: Without dead ends: 49 [2024-11-09 22:35:07,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:35:07,441 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:07,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 218 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:35:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-09 22:35:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-11-09 22:35:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-09 22:35:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2024-11-09 22:35:07,463 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 42 [2024-11-09 22:35:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:07,464 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2024-11-09 22:35:07,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-09 22:35:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2024-11-09 22:35:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 22:35:07,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:07,470 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2024-11-09 22:35:07,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:35:07,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:07,671 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:07,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:07,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1060669222, now seen corresponding path program 1 times [2024-11-09 22:35:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:07,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124607190] [2024-11-09 22:35:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:07,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:07,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693822071] [2024-11-09 22:35:07,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:07,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:07,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:07,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:07,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:35:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:07,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:35:07,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 22:35:07,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:35:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:07,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124607190] [2024-11-09 22:35:07,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693822071] [2024-11-09 22:35:07,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693822071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:07,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:07,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:07,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571509630] [2024-11-09 22:35:07,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:07,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:07,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:07,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:07,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:07,845 INFO L87 Difference]: Start difference. First operand 48 states and 63 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 22:35:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:07,925 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2024-11-09 22:35:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:07,926 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2024-11-09 22:35:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:07,927 INFO L225 Difference]: With dead ends: 70 [2024-11-09 22:35:07,927 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 22:35:07,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:07,929 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:07,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 22:35:07,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2024-11-09 22:35:07,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 38 states have internal predecessors, (39), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 22:35:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2024-11-09 22:35:07,946 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 44 [2024-11-09 22:35:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:07,946 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2024-11-09 22:35:07,947 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 22:35:07,947 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2024-11-09 22:35:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 22:35:07,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:07,948 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1] [2024-11-09 22:35:07,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:35:08,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 22:35:08,153 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:08,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:08,154 INFO L85 PathProgramCache]: Analyzing trace with hash 952841133, now seen corresponding path program 1 times [2024-11-09 22:35:08,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:08,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385265848] [2024-11-09 22:35:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:08,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:08,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236725821] [2024-11-09 22:35:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:08,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:08,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:08,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:08,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:35:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:08,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:35:08,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 22:35:08,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:35:08,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:08,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385265848] [2024-11-09 22:35:08,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:08,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236725821] [2024-11-09 22:35:08,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236725821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:08,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:08,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:08,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724268876] [2024-11-09 22:35:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:08,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:08,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:08,355 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-11-09 22:35:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:08,411 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2024-11-09 22:35:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:08,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 49 [2024-11-09 22:35:08,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:08,417 INFO L225 Difference]: With dead ends: 66 [2024-11-09 22:35:08,417 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 22:35:08,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:08,420 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 5 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:08,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 158 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:08,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 22:35:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-11-09 22:35:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 22:35:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-11-09 22:35:08,440 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 49 [2024-11-09 22:35:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:08,441 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-11-09 22:35:08,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-11-09 22:35:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-11-09 22:35:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 22:35:08,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:08,444 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:08,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:08,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:08,649 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:08,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:08,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1901382541, now seen corresponding path program 1 times [2024-11-09 22:35:08,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:08,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651601533] [2024-11-09 22:35:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:08,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:08,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716836351] [2024-11-09 22:35:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:08,694 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:08,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:35:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:08,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 22:35:08,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:35:08,910 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:35:08,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:08,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651601533] [2024-11-09 22:35:08,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:08,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716836351] [2024-11-09 22:35:08,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716836351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:08,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:08,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:08,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149543606] [2024-11-09 22:35:08,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:08,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:08,916 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 22:35:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:08,991 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2024-11-09 22:35:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:08,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 59 [2024-11-09 22:35:08,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:08,993 INFO L225 Difference]: With dead ends: 70 [2024-11-09 22:35:08,993 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 22:35:08,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:35:08,994 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 5 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:08,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 145 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:08,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 22:35:09,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-09 22:35:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 44 states have internal predecessors, (45), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 22:35:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2024-11-09 22:35:09,017 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 59 [2024-11-09 22:35:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:09,017 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2024-11-09 22:35:09,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 22:35:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2024-11-09 22:35:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 22:35:09,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:09,019 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 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, 1, 1, 1] [2024-11-09 22:35:09,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 22:35:09,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:09,220 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:09,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1573647644, now seen corresponding path program 1 times [2024-11-09 22:35:09,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:09,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841561067] [2024-11-09 22:35:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:09,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:09,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758236628] [2024-11-09 22:35:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:09,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:09,259 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:09,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:35:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:09,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 22:35:09,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-09 22:35:09,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:09,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841561067] [2024-11-09 22:35:09,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:09,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758236628] [2024-11-09 22:35:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758236628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:09,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:09,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-09 22:35:09,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610714058] [2024-11-09 22:35:09,714 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:09,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 22:35:09,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 22:35:09,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:35:09,716 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 22:35:09,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:09,945 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2024-11-09 22:35:09,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 22:35:09,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 67 [2024-11-09 22:35:09,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:09,948 INFO L225 Difference]: With dead ends: 100 [2024-11-09 22:35:09,948 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 22:35:09,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:35:09,950 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 21 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:09,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 236 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:35:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 22:35:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2024-11-09 22:35:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.12) internal successors, (56), 53 states have internal predecessors, (56), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-09 22:35:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2024-11-09 22:35:09,971 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 67 [2024-11-09 22:35:09,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:09,973 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2024-11-09 22:35:09,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-09 22:35:09,973 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2024-11-09 22:35:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 22:35:09,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:09,975 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:09,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:10,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:10,179 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:10,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:10,179 INFO L85 PathProgramCache]: Analyzing trace with hash -611527986, now seen corresponding path program 1 times [2024-11-09 22:35:10,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:10,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312488471] [2024-11-09 22:35:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:10,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:35:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:35:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:35:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 22:35:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 22:35:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:35:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:35:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:35:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-09 22:35:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 22:35:10,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:10,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312488471] [2024-11-09 22:35:10,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312488471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:10,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541623715] [2024-11-09 22:35:10,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:10,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:10,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:10,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:10,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:35:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:10,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:35:10,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 22:35:10,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 12 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 22:35:10,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541623715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:10,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:35:10,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-09 22:35:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863800960] [2024-11-09 22:35:10,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:10,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:35:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:35:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:35:10,628 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 22:35:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:10,834 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2024-11-09 22:35:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 22:35:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 69 [2024-11-09 22:35:10,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:10,837 INFO L225 Difference]: With dead ends: 138 [2024-11-09 22:35:10,837 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 22:35:10,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 149 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:35:10,838 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 28 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:10,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 432 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:10,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 22:35:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2024-11-09 22:35:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 69 states have (on average 1.144927536231884) internal successors, (79), 73 states have internal predecessors, (79), 39 states have call successors, (39), 7 states have call predecessors, (39), 7 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-09 22:35:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 156 transitions. [2024-11-09 22:35:10,860 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 156 transitions. Word has length 69 [2024-11-09 22:35:10,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:10,861 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 156 transitions. [2024-11-09 22:35:10,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-09 22:35:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 156 transitions. [2024-11-09 22:35:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 22:35:10,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:10,862 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:10,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 22:35:11,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:11,063 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:11,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash -616299726, now seen corresponding path program 1 times [2024-11-09 22:35:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:11,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500569787] [2024-11-09 22:35:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:11,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:11,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699052995] [2024-11-09 22:35:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:11,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:11,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:11,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:11,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:35:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:11,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 22:35:11,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 22:35:11,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:11,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500569787] [2024-11-09 22:35:11,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:11,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699052995] [2024-11-09 22:35:11,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699052995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:11,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:11,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-09 22:35:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084976407] [2024-11-09 22:35:11,351 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:11,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 22:35:11,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:11,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 22:35:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:35:11,353 INFO L87 Difference]: Start difference. First operand 116 states and 156 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 22:35:11,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:11,464 INFO L93 Difference]: Finished difference Result 170 states and 233 transitions. [2024-11-09 22:35:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:35:11,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 76 [2024-11-09 22:35:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:11,469 INFO L225 Difference]: With dead ends: 170 [2024-11-09 22:35:11,469 INFO L226 Difference]: Without dead ends: 166 [2024-11-09 22:35:11,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:35:11,471 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 7 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:11,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 219 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:11,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-09 22:35:11,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2024-11-09 22:35:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 96 states have (on average 1.15625) internal successors, (111), 103 states have internal predecessors, (111), 58 states have call successors, (58), 8 states have call predecessors, (58), 8 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 22:35:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 225 transitions. [2024-11-09 22:35:11,512 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 225 transitions. Word has length 76 [2024-11-09 22:35:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:11,513 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 225 transitions. [2024-11-09 22:35:11,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 22:35:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 225 transitions. [2024-11-09 22:35:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 22:35:11,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:11,515 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:11,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 22:35:11,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:11,716 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:11,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1530494997, now seen corresponding path program 2 times [2024-11-09 22:35:11,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:11,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483854845] [2024-11-09 22:35:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:11,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:11,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969291145] [2024-11-09 22:35:11,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:35:11,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:11,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:11,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:11,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:35:11,801 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:35:11,802 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:35:11,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 22:35:11,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 22:35:12,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:12,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483854845] [2024-11-09 22:35:12,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969291145] [2024-11-09 22:35:12,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969291145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:12,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:12,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-09 22:35:12,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921637270] [2024-11-09 22:35:12,097 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:12,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:35:12,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:12,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:35:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:35:12,099 INFO L87 Difference]: Start difference. First operand 163 states and 225 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 22:35:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:12,238 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2024-11-09 22:35:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 22:35:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 81 [2024-11-09 22:35:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:12,242 INFO L225 Difference]: With dead ends: 176 [2024-11-09 22:35:12,243 INFO L226 Difference]: Without dead ends: 173 [2024-11-09 22:35:12,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:35:12,244 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:12,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 242 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-09 22:35:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2024-11-09 22:35:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 109 states have internal predecessors, (117), 58 states have call successors, (58), 10 states have call predecessors, (58), 10 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 22:35:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2024-11-09 22:35:12,276 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 81 [2024-11-09 22:35:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:12,277 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2024-11-09 22:35:12,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 22:35:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2024-11-09 22:35:12,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 22:35:12,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:12,278 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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, 1, 1, 1, 1] [2024-11-09 22:35:12,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:12,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 22:35:12,479 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:12,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1524123438, now seen corresponding path program 3 times [2024-11-09 22:35:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:12,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349741560] [2024-11-09 22:35:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:12,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184665174] [2024-11-09 22:35:12,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:35:12,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:12,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:12,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:35:12,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 22:35:12,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:35:12,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-09 22:35:12,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 48 proven. 29 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 22:35:13,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:16,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349741560] [2024-11-09 22:35:16,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184665174] [2024-11-09 22:35:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184665174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:16,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:16,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-09 22:35:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923586958] [2024-11-09 22:35:16,066 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:16,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:35:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:35:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:35:16,069 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 16 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 22:35:16,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:16,616 INFO L93 Difference]: Finished difference Result 184 states and 242 transitions. [2024-11-09 22:35:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:35:16,617 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 86 [2024-11-09 22:35:16,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:16,619 INFO L225 Difference]: With dead ends: 184 [2024-11-09 22:35:16,621 INFO L226 Difference]: Without dead ends: 181 [2024-11-09 22:35:16,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2024-11-09 22:35:16,622 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 44 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:16,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 350 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:35:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-09 22:35:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2024-11-09 22:35:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 108 states have (on average 1.1388888888888888) internal successors, (123), 115 states have internal predecessors, (123), 58 states have call successors, (58), 12 states have call predecessors, (58), 12 states have return successors, (56), 51 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 22:35:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2024-11-09 22:35:16,653 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 86 [2024-11-09 22:35:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:16,653 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2024-11-09 22:35:16,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 22:35:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2024-11-09 22:35:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 22:35:16,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:16,655 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 3, 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, 1, 1, 1] [2024-11-09 22:35:16,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 22:35:16,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 22:35:16,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:16,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1563243110, now seen corresponding path program 2 times [2024-11-09 22:35:16,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:16,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472844043] [2024-11-09 22:35:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:16,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:16,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133862815] [2024-11-09 22:35:16,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:35:16,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:16,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:16,893 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:16,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 22:35:16,964 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:35:16,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:35:16,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 22:35:16,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-09 22:35:17,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-09 22:35:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:17,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472844043] [2024-11-09 22:35:17,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:17,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133862815] [2024-11-09 22:35:17,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133862815] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:17,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:17,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-09 22:35:17,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015540211] [2024-11-09 22:35:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:17,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:17,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:35:17,183 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 22:35:17,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:17,241 INFO L93 Difference]: Finished difference Result 186 states and 243 transitions. [2024-11-09 22:35:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:35:17,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-11-09 22:35:17,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:17,245 INFO L225 Difference]: With dead ends: 186 [2024-11-09 22:35:17,246 INFO L226 Difference]: Without dead ends: 183 [2024-11-09 22:35:17,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-09 22:35:17,247 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:17,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 141 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-09 22:35:17,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 156. [2024-11-09 22:35:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 96 states have (on average 1.1354166666666667) internal successors, (109), 100 states have internal predecessors, (109), 47 states have call successors, (47), 12 states have call predecessors, (47), 12 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-09 22:35:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 201 transitions. [2024-11-09 22:35:17,273 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 201 transitions. Word has length 90 [2024-11-09 22:35:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:17,274 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 201 transitions. [2024-11-09 22:35:17,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 22:35:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 201 transitions. [2024-11-09 22:35:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 22:35:17,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:17,275 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:17,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 22:35:17,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 22:35:17,476 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:17,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash 797294596, now seen corresponding path program 1 times [2024-11-09 22:35:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:17,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722219589] [2024-11-09 22:35:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:17,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975718042] [2024-11-09 22:35:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:17,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:17,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:17,497 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:17,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 22:35:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:17,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 22:35:17,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-09 22:35:18,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-09 22:35:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:19,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722219589] [2024-11-09 22:35:19,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975718042] [2024-11-09 22:35:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975718042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:19,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:35:19,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2024-11-09 22:35:19,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143343836] [2024-11-09 22:35:19,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:19,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:35:19,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:19,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:35:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:35:19,107 INFO L87 Difference]: Start difference. First operand 156 states and 201 transitions. Second operand has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-09 22:35:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:21,490 INFO L93 Difference]: Finished difference Result 267 states and 373 transitions. [2024-11-09 22:35:21,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 22:35:21,491 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 92 [2024-11-09 22:35:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:21,493 INFO L225 Difference]: With dead ends: 267 [2024-11-09 22:35:21,493 INFO L226 Difference]: Without dead ends: 262 [2024-11-09 22:35:21,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 22:35:21,495 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 98 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:21,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 750 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 22:35:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-09 22:35:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 259. [2024-11-09 22:35:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 150 states have (on average 1.18) internal successors, (177), 153 states have internal predecessors, (177), 94 states have call successors, (94), 14 states have call predecessors, (94), 14 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-09 22:35:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 363 transitions. [2024-11-09 22:35:21,576 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 363 transitions. Word has length 92 [2024-11-09 22:35:21,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:21,578 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 363 transitions. [2024-11-09 22:35:21,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-09 22:35:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 363 transitions. [2024-11-09 22:35:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 22:35:21,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:21,580 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 22:35:21,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:21,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 22:35:21,781 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:21,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1889884019, now seen corresponding path program 4 times [2024-11-09 22:35:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274670603] [2024-11-09 22:35:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:35:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:35:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:35:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 22:35:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 22:35:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:35:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:35:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:35:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-09 22:35:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 22:35:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 22:35:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 22:35:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-09 22:35:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-09 22:35:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-09 22:35:21,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:21,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274670603] [2024-11-09 22:35:21,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274670603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:35:21,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:35:21,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:35:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431796813] [2024-11-09 22:35:21,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:35:21,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:35:21,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:35:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:35:21,917 INFO L87 Difference]: Start difference. First operand 259 states and 363 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 22:35:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:22,030 INFO L93 Difference]: Finished difference Result 325 states and 451 transitions. [2024-11-09 22:35:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:35:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 103 [2024-11-09 22:35:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:22,032 INFO L225 Difference]: With dead ends: 325 [2024-11-09 22:35:22,033 INFO L226 Difference]: Without dead ends: 234 [2024-11-09 22:35:22,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:35:22,034 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 8 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:22,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 189 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:35:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-09 22:35:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 219. [2024-11-09 22:35:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 126 states have (on average 1.1349206349206349) internal successors, (143), 129 states have internal predecessors, (143), 78 states have call successors, (78), 14 states have call predecessors, (78), 14 states have return successors, (76), 75 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-09 22:35:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 297 transitions. [2024-11-09 22:35:22,094 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 297 transitions. Word has length 103 [2024-11-09 22:35:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:22,094 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 297 transitions. [2024-11-09 22:35:22,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-09 22:35:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 297 transitions. [2024-11-09 22:35:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 22:35:22,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:22,095 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:22,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 22:35:22,096 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:22,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1162616412, now seen corresponding path program 1 times [2024-11-09 22:35:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:22,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53719608] [2024-11-09 22:35:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:22,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:22,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535579658] [2024-11-09 22:35:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:22,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:22,132 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:22,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 22:35:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:22,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 22:35:22,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 57 proven. 32 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 22:35:23,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:24,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:24,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53719608] [2024-11-09 22:35:24,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:24,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535579658] [2024-11-09 22:35:24,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535579658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:24,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:24,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-09 22:35:24,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708748667] [2024-11-09 22:35:24,347 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:24,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:35:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:24,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:35:24,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:35:24,349 INFO L87 Difference]: Start difference. First operand 219 states and 297 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-09 22:35:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:25,187 INFO L93 Difference]: Finished difference Result 232 states and 308 transitions. [2024-11-09 22:35:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:35:25,188 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 109 [2024-11-09 22:35:25,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:25,190 INFO L225 Difference]: With dead ends: 232 [2024-11-09 22:35:25,190 INFO L226 Difference]: Without dead ends: 229 [2024-11-09 22:35:25,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2024-11-09 22:35:25,191 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 35 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:25,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 438 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:35:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-09 22:35:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 203. [2024-11-09 22:35:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 123 states have internal predecessors, (134), 69 states have call successors, (69), 14 states have call predecessors, (69), 14 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-09 22:35:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2024-11-09 22:35:25,250 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 109 [2024-11-09 22:35:25,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:25,251 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2024-11-09 22:35:25,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-09 22:35:25,251 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2024-11-09 22:35:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 22:35:25,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:25,253 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 22:35:25,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 22:35:25,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 22:35:25,458 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:25,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1963907256, now seen corresponding path program 1 times [2024-11-09 22:35:25,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:25,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966154419] [2024-11-09 22:35:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:25,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:35:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:35:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:35:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-09 22:35:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-09 22:35:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-09 22:35:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:35:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:35:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:35:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-09 22:35:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 22:35:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 22:35:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 22:35:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-09 22:35:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-09 22:35:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-09 22:35:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-09 22:35:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-09 22:35:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-09 22:35:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 46 proven. 11 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-09 22:35:25,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:25,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966154419] [2024-11-09 22:35:25,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966154419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:25,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878218216] [2024-11-09 22:35:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:25,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:25,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:25,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:25,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 22:35:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:35:25,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:35:25,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 92 proven. 11 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2024-11-09 22:35:25,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 46 proven. 11 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-09 22:35:25,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878218216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:25,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:35:25,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-09 22:35:25,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766163249] [2024-11-09 22:35:25,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:25,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:35:25,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:25,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:35:25,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:35:25,863 INFO L87 Difference]: Start difference. First operand 203 states and 270 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-09 22:35:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:26,088 INFO L93 Difference]: Finished difference Result 237 states and 316 transitions. [2024-11-09 22:35:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 22:35:26,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 124 [2024-11-09 22:35:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:26,091 INFO L225 Difference]: With dead ends: 237 [2024-11-09 22:35:26,091 INFO L226 Difference]: Without dead ends: 224 [2024-11-09 22:35:26,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 283 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:35:26,092 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 23 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:26,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 364 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:35:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-09 22:35:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 189. [2024-11-09 22:35:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 112 states have internal predecessors, (124), 65 states have call successors, (65), 13 states have call predecessors, (65), 13 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-09 22:35:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 252 transitions. [2024-11-09 22:35:26,148 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 252 transitions. Word has length 124 [2024-11-09 22:35:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:26,148 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 252 transitions. [2024-11-09 22:35:26,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-09 22:35:26,149 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 252 transitions. [2024-11-09 22:35:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-09 22:35:26,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:26,150 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:26,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:26,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 22:35:26,355 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:26,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:26,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1457294975, now seen corresponding path program 2 times [2024-11-09 22:35:26,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:26,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039220734] [2024-11-09 22:35:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:26,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:26,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919983485] [2024-11-09 22:35:26,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:35:26,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:26,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:26,376 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:26,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 22:35:26,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:35:26,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:35:26,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 22:35:26,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 61 proven. 59 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-09 22:35:26,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-09 22:35:27,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:27,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039220734] [2024-11-09 22:35:27,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:27,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919983485] [2024-11-09 22:35:27,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919983485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:27,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:35:27,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2024-11-09 22:35:27,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898734156] [2024-11-09 22:35:27,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:27,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 22:35:27,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:27,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 22:35:27,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:35:27,181 INFO L87 Difference]: Start difference. First operand 189 states and 252 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 19 states have internal predecessors, (62), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2024-11-09 22:35:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:29,217 INFO L93 Difference]: Finished difference Result 253 states and 342 transitions. [2024-11-09 22:35:29,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 22:35:29,227 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 19 states have internal predecessors, (62), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) Word has length 126 [2024-11-09 22:35:29,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:29,229 INFO L225 Difference]: With dead ends: 253 [2024-11-09 22:35:29,229 INFO L226 Difference]: Without dead ends: 249 [2024-11-09 22:35:29,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 22:35:29,230 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 69 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:29,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 659 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 22:35:29,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-09 22:35:29,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 191. [2024-11-09 22:35:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 114 states have internal predecessors, (127), 63 states have call successors, (63), 14 states have call predecessors, (63), 14 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-09 22:35:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 252 transitions. [2024-11-09 22:35:29,290 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 252 transitions. Word has length 126 [2024-11-09 22:35:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:29,291 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 252 transitions. [2024-11-09 22:35:29,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 19 states have internal predecessors, (62), 9 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 9 states have call predecessors, (30), 9 states have call successors, (30) [2024-11-09 22:35:29,291 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 252 transitions. [2024-11-09 22:35:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-09 22:35:29,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:29,292 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:29,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 22:35:29,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:29,493 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:29,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1922555051, now seen corresponding path program 3 times [2024-11-09 22:35:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:29,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723346819] [2024-11-09 22:35:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:29,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:29,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311291522] [2024-11-09 22:35:29,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:35:29,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:29,532 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:29,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 22:35:29,598 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:35:29,598 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:35:29,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 22:35:29,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 63 proven. 43 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-09 22:35:30,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 63 proven. 43 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-09 22:35:31,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723346819] [2024-11-09 22:35:31,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311291522] [2024-11-09 22:35:31,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311291522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:35:31,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:35:31,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-11-09 22:35:31,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732146588] [2024-11-09 22:35:31,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:31,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 22:35:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:31,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 22:35:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:35:31,566 INFO L87 Difference]: Start difference. First operand 191 states and 252 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 13 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) [2024-11-09 22:35:34,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:34,898 INFO L93 Difference]: Finished difference Result 280 states and 376 transitions. [2024-11-09 22:35:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 22:35:34,899 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 13 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) Word has length 127 [2024-11-09 22:35:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:34,900 INFO L225 Difference]: With dead ends: 280 [2024-11-09 22:35:34,900 INFO L226 Difference]: Without dead ends: 277 [2024-11-09 22:35:34,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=280, Invalid=1126, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 22:35:34,901 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 69 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:34,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 681 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 22:35:34,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-09 22:35:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2024-11-09 22:35:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 161 states have (on average 1.1304347826086956) internal successors, (182), 162 states have internal predecessors, (182), 95 states have call successors, (95), 18 states have call predecessors, (95), 18 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-09 22:35:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 371 transitions. [2024-11-09 22:35:35,000 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 371 transitions. Word has length 127 [2024-11-09 22:35:35,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:35,000 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 371 transitions. [2024-11-09 22:35:35,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 13 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 11 states have call predecessors, (36), 13 states have call successors, (36) [2024-11-09 22:35:35,000 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 371 transitions. [2024-11-09 22:35:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 22:35:35,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:35,002 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:35,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 22:35:35,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 22:35:35,203 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:35,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1667388634, now seen corresponding path program 4 times [2024-11-09 22:35:35,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:35,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426885620] [2024-11-09 22:35:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:35,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914369849] [2024-11-09 22:35:35,236 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:35:35,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:35,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:35,242 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:35,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 22:35:35,321 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:35:35,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:35:35,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 22:35:35,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 57 proven. 56 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2024-11-09 22:35:35,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:35:37,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:35:37,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426885620] [2024-11-09 22:35:37,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:35:37,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914369849] [2024-11-09 22:35:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914369849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:35:37,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:35:37,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-09 22:35:37,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878567793] [2024-11-09 22:35:37,318 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:35:37,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 22:35:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:35:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 22:35:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:35:37,319 INFO L87 Difference]: Start difference. First operand 275 states and 371 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-09 22:35:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:35:38,050 INFO L93 Difference]: Finished difference Result 359 states and 483 transitions. [2024-11-09 22:35:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 22:35:38,050 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), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 131 [2024-11-09 22:35:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:35:38,053 INFO L225 Difference]: With dead ends: 359 [2024-11-09 22:35:38,053 INFO L226 Difference]: Without dead ends: 356 [2024-11-09 22:35:38,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 179 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-11-09 22:35:38,054 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 28 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:35:38,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 541 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:35:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-09 22:35:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 352. [2024-11-09 22:35:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 205 states have (on average 1.1268292682926828) internal successors, (231), 206 states have internal predecessors, (231), 123 states have call successors, (123), 23 states have call predecessors, (123), 23 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-09 22:35:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 476 transitions. [2024-11-09 22:35:38,204 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 476 transitions. Word has length 131 [2024-11-09 22:35:38,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:35:38,205 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 476 transitions. [2024-11-09 22:35:38,205 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), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-09 22:35:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 476 transitions. [2024-11-09 22:35:38,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-09 22:35:38,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:35:38,207 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:35:38,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 22:35:38,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 22:35:38,408 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:35:38,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:35:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash 853351826, now seen corresponding path program 5 times [2024-11-09 22:35:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:35:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851582674] [2024-11-09 22:35:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:35:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:35:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:35:38,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314650743] [2024-11-09 22:35:38,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:35:38,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:35:38,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:35:38,449 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:35:38,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 22:35:38,599 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-09 22:35:38,599 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:35:38,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-09 22:35:38,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:35:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 88 proven. 62 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2024-11-09 22:35:39,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:36:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 88 proven. 62 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2024-11-09 22:36:06,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:36:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851582674] [2024-11-09 22:36:06,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:36:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314650743] [2024-11-09 22:36:06,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314650743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:36:06,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:36:06,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-11-09 22:36:06,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19754186] [2024-11-09 22:36:06,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:36:06,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 22:36:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:36:06,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 22:36:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:36:06,325 INFO L87 Difference]: Start difference. First operand 352 states and 476 transitions. Second operand has 22 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 12 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (38), 13 states have call predecessors, (38), 11 states have call successors, (38) [2024-11-09 22:36:20,394 WARN L286 SmtUtils]: Spent 11.68s on a formula simplification. DAG size of input: 88 DAG size of output: 87 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 22:36:24,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:36:29,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 22:36:38,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []