./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.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/array-multidimensional/copy-partial-3-u.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 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:14:11,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:14:11,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:14:11,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:14:11,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:14:11,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:14:11,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:14:11,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:14:11,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:14:11,511 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:14:11,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:14:11,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:14:11,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:14:11,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:14:11,513 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:14:11,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:14:11,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:14:11,514 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:14:11,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:14:11,514 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:14:11,515 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:14:11,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:14:11,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:14:11,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:14:11,516 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:14:11,516 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:14:11,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:14:11,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:14:11,517 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:14:11,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:14:11,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:14:11,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:14:11,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:14:11,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:14:11,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:14:11,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:14:11,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:14:11,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:14:11,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:14:11,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:14:11,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:14:11,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:14:11,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a248b2b2cf395cf0c12ea6447af889ed3691d7fa3d2de2504a7728d19c705b [2024-11-09 18:14:11,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:14:11,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:14:11,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:14:11,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:14:11,717 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:14:11,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-11-09 18:14:12,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:14:13,012 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:14:13,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-3-u.c [2024-11-09 18:14:13,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6985839a/259f21318cb64f288cabd6d3268d52d6/FLAGfab06248b [2024-11-09 18:14:13,028 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6985839a/259f21318cb64f288cabd6d3268d52d6 [2024-11-09 18:14:13,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:14:13,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:14:13,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:14:13,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:14:13,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:14:13,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bed4826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13, skipping insertion in model container [2024-11-09 18:14:13,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:14:13,208 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/array-multidimensional/copy-partial-3-u.c[414,427] [2024-11-09 18:14:13,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:14:13,241 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:14:13,250 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/array-multidimensional/copy-partial-3-u.c[414,427] [2024-11-09 18:14:13,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:14:13,282 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:14:13,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13 WrapperNode [2024-11-09 18:14:13,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:14:13,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:14:13,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:14:13,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:14:13,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,313 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2024-11-09 18:14:13,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:14:13,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:14:13,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:14:13,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:14:13,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,337 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-09 18:14:13,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,345 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,347 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:14:13,353 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:14:13,353 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:14:13,353 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:14:13,354 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (1/1) ... [2024-11-09 18:14:13,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:14:13,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:13,381 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 18:14:13,383 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 18:14:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:14:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:14:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:14:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 18:14:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:14:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:14:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:14:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 18:14:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:14:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:14:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:14:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:14:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 18:14:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:14:13,485 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:14:13,487 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:14:13,636 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L22: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset;call ULTIMATE.dealloc(main_~#B~0#1.base, main_~#B~0#1.offset);havoc main_~#B~0#1.base, main_~#B~0#1.offset; [2024-11-09 18:14:13,646 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-09 18:14:13,646 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:14:13,660 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:14:13,660 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:14:13,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:14:13 BoogieIcfgContainer [2024-11-09 18:14:13,661 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:14:13,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:14:13,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:14:13,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:14:13,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:14:13" (1/3) ... [2024-11-09 18:14:13,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21661e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:14:13, skipping insertion in model container [2024-11-09 18:14:13,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:14:13" (2/3) ... [2024-11-09 18:14:13,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21661e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:14:13, skipping insertion in model container [2024-11-09 18:14:13,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:14:13" (3/3) ... [2024-11-09 18:14:13,666 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u.c [2024-11-09 18:14:13,678 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:14:13,679 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:14:13,720 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:14:13,725 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;@50737d8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:14:13,725 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:14:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 47 states have (on average 1.574468085106383) internal successors, (74), 48 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 18:14:13,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:13,733 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:13,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:13,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1828172821, now seen corresponding path program 1 times [2024-11-09 18:14:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852898564] [2024-11-09 18:14:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:13,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:13,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852898564] [2024-11-09 18:14:13,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852898564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:13,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:13,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:14:13,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543943060] [2024-11-09 18:14:13,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:13,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:14:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:14:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:14:13,897 INFO L87 Difference]: Start difference. First operand has 49 states, 47 states have (on average 1.574468085106383) internal successors, (74), 48 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:13,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:13,910 INFO L93 Difference]: Finished difference Result 94 states and 143 transitions. [2024-11-09 18:14:13,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:14:13,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 18:14:13,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:13,917 INFO L225 Difference]: With dead ends: 94 [2024-11-09 18:14:13,917 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 18:14:13,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:14:13,921 INFO L432 NwaCegarLoop]: 59 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, 59 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 18:14:13,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 18:14:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-09 18:14:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2024-11-09 18:14:13,944 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 19 [2024-11-09 18:14:13,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:13,945 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2024-11-09 18:14:13,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2024-11-09 18:14:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 18:14:13,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:13,946 INFO L215 NwaCegarLoop]: trace histogram [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 18:14:13,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:14:13,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:13,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash -128488140, now seen corresponding path program 1 times [2024-11-09 18:14:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:13,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299007278] [2024-11-09 18:14:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:14,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299007278] [2024-11-09 18:14:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299007278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:14,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:14,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:14,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048940151] [2024-11-09 18:14:14,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:14,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:14,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,120 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:14,188 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2024-11-09 18:14:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:14,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 18:14:14,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:14,189 INFO L225 Difference]: With dead ends: 105 [2024-11-09 18:14:14,190 INFO L226 Difference]: Without dead ends: 73 [2024-11-09 18:14:14,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,191 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 84 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:14,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 59 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:14:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-09 18:14:14,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2024-11-09 18:14:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-09 18:14:14,202 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 22 [2024-11-09 18:14:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:14,202 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-09 18:14:14,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-09 18:14:14,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 18:14:14,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:14,203 INFO L215 NwaCegarLoop]: trace histogram [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 18:14:14,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:14:14,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:14,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash 10869191, now seen corresponding path program 1 times [2024-11-09 18:14:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786144335] [2024-11-09 18:14:14,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:14,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786144335] [2024-11-09 18:14:14,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786144335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:14,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:14,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964335836] [2024-11-09 18:14:14,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:14,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:14,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,288 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:14,349 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2024-11-09 18:14:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:14,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-09 18:14:14,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:14,354 INFO L225 Difference]: With dead ends: 106 [2024-11-09 18:14:14,354 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 18:14:14,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,355 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 70 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:14,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 62 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:14:14,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 18:14:14,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2024-11-09 18:14:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2024-11-09 18:14:14,364 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 27 [2024-11-09 18:14:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:14,366 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2024-11-09 18:14:14,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2024-11-09 18:14:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 18:14:14,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:14,369 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 18:14:14,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:14:14,370 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:14,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1853464465, now seen corresponding path program 1 times [2024-11-09 18:14:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:14,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921310654] [2024-11-09 18:14:14,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:14,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:14:14,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:14,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921310654] [2024-11-09 18:14:14,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921310654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:14,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:14,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204005140] [2024-11-09 18:14:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:14,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:14,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,443 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:14,489 INFO L93 Difference]: Finished difference Result 105 states and 130 transitions. [2024-11-09 18:14:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:14,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-09 18:14:14,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:14,490 INFO L225 Difference]: With dead ends: 105 [2024-11-09 18:14:14,490 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 18:14:14,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,492 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:14,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 69 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 18:14:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2024-11-09 18:14:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-09 18:14:14,497 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 32 [2024-11-09 18:14:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:14,498 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-09 18:14:14,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-09 18:14:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 18:14:14,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:14,499 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 18:14:14,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:14:14,499 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:14,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:14,499 INFO L85 PathProgramCache]: Analyzing trace with hash 949349808, now seen corresponding path program 1 times [2024-11-09 18:14:14,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:14,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651302473] [2024-11-09 18:14:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:14,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:14:14,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:14,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651302473] [2024-11-09 18:14:14,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651302473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:14,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:14,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:14,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8323846] [2024-11-09 18:14:14,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:14,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:14,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:14,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,587 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:14,641 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2024-11-09 18:14:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:14,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-09 18:14:14,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:14,642 INFO L225 Difference]: With dead ends: 116 [2024-11-09 18:14:14,642 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 18:14:14,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,643 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 94 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:14,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 70 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 18:14:14,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2024-11-09 18:14:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-09 18:14:14,655 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 34 [2024-11-09 18:14:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:14,656 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-09 18:14:14,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,657 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-09 18:14:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 18:14:14,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:14,658 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-09 18:14:14,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:14:14,658 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:14,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash -682742340, now seen corresponding path program 1 times [2024-11-09 18:14:14,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:14,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502990377] [2024-11-09 18:14:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:14,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:14:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:14,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502990377] [2024-11-09 18:14:14,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502990377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:14,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:14,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:14,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258149098] [2024-11-09 18:14:14,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:14,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:14,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,730 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:14,776 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2024-11-09 18:14:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-09 18:14:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:14,777 INFO L225 Difference]: With dead ends: 111 [2024-11-09 18:14:14,777 INFO L226 Difference]: Without dead ends: 76 [2024-11-09 18:14:14,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,778 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 57 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:14,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 71 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-09 18:14:14,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2024-11-09 18:14:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2024-11-09 18:14:14,789 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 39 [2024-11-09 18:14:14,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:14,789 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2024-11-09 18:14:14,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,789 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2024-11-09 18:14:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 18:14:14,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:14,791 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:14,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:14:14,792 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:14,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash -508059693, now seen corresponding path program 1 times [2024-11-09 18:14:14,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:14,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887329497] [2024-11-09 18:14:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:14,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 18:14:14,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:14,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887329497] [2024-11-09 18:14:14,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887329497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:14,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:14,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:14,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803744720] [2024-11-09 18:14:14,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:14,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:14,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,869 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:14,899 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2024-11-09 18:14:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:14,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-09 18:14:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:14,901 INFO L225 Difference]: With dead ends: 102 [2024-11-09 18:14:14,901 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 18:14:14,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:14,902 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 43 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:14,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 80 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 18:14:14,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-09 18:14:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2024-11-09 18:14:14,911 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 44 [2024-11-09 18:14:14,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:14,912 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2024-11-09 18:14:14,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2024-11-09 18:14:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 18:14:14,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:14,913 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:14,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 18:14:14,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:14,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:14,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2096024076, now seen corresponding path program 1 times [2024-11-09 18:14:14,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:14,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544843150] [2024-11-09 18:14:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:14,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:15,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:15,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544843150] [2024-11-09 18:14:15,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544843150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:15,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:15,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:15,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742040508] [2024-11-09 18:14:15,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:15,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:15,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:15,008 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:15,067 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-09 18:14:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:15,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-09 18:14:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:15,069 INFO L225 Difference]: With dead ends: 86 [2024-11-09 18:14:15,069 INFO L226 Difference]: Without dead ends: 68 [2024-11-09 18:14:15,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:14:15,070 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 53 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:15,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 50 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-09 18:14:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2024-11-09 18:14:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2024-11-09 18:14:15,083 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 46 [2024-11-09 18:14:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:15,084 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2024-11-09 18:14:15,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2024-11-09 18:14:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 18:14:15,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:15,085 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:15,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 18:14:15,085 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:15,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1592350375, now seen corresponding path program 1 times [2024-11-09 18:14:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770229803] [2024-11-09 18:14:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:15,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:15,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770229803] [2024-11-09 18:14:15,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770229803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:15,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:15,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:15,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185494039] [2024-11-09 18:14:15,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:15,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:15,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:15,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:15,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:15,164 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:15,220 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2024-11-09 18:14:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:15,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 18:14:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:15,221 INFO L225 Difference]: With dead ends: 93 [2024-11-09 18:14:15,221 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 18:14:15,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:14:15,222 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:15,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 55 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:15,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 18:14:15,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2024-11-09 18:14:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 63 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2024-11-09 18:14:15,232 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2024-11-09 18:14:15,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:15,234 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2024-11-09 18:14:15,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,234 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2024-11-09 18:14:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-09 18:14:15,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:15,235 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:15,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 18:14:15,236 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:15,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1514593809, now seen corresponding path program 1 times [2024-11-09 18:14:15,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:15,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465108548] [2024-11-09 18:14:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:15,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:15,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465108548] [2024-11-09 18:14:15,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465108548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:14:15,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:14:15,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 18:14:15,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813859897] [2024-11-09 18:14:15,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:14:15,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:14:15,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:14:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:14:15,314 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:15,359 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2024-11-09 18:14:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:14:15,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-09 18:14:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:15,360 INFO L225 Difference]: With dead ends: 94 [2024-11-09 18:14:15,360 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 18:14:15,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:14:15,361 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 27 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:15,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 62 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:14:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 18:14:15,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-09 18:14:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-11-09 18:14:15,374 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 56 [2024-11-09 18:14:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:15,374 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-11-09 18:14:15,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-11-09 18:14:15,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 18:14:15,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:15,375 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:15,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 18:14:15,375 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:15,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash -679924880, now seen corresponding path program 1 times [2024-11-09 18:14:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:15,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708311403] [2024-11-09 18:14:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:15,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708311403] [2024-11-09 18:14:15,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708311403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512739066] [2024-11-09 18:14:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:15,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:15,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:15,451 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 18:14:15,453 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 18:14:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:15,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:14:15,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:14:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:15,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:14:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:15,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512739066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:14:15,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:14:15,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 18:14:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497139235] [2024-11-09 18:14:15,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:14:15,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 18:14:15,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 18:14:15,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-09 18:14:15,632 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:15,738 INFO L93 Difference]: Finished difference Result 159 states and 190 transitions. [2024-11-09 18:14:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 18:14:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-09 18:14:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:15,740 INFO L225 Difference]: With dead ends: 159 [2024-11-09 18:14:15,740 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 18:14:15,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-09 18:14:15,740 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 103 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:15,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 179 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:14:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 18:14:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2024-11-09 18:14:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.180722891566265) internal successors, (98), 83 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2024-11-09 18:14:15,758 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 58 [2024-11-09 18:14:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:15,758 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2024-11-09 18:14:15,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2024-11-09 18:14:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 18:14:15,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:15,759 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:15,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 18:14:15,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 18:14:15,964 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:15,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1631127629, now seen corresponding path program 2 times [2024-11-09 18:14:15,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:15,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875924374] [2024-11-09 18:14:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:15,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:16,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:16,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875924374] [2024-11-09 18:14:16,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875924374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:16,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573940345] [2024-11-09 18:14:16,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:14:16,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:16,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:16,078 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 18:14:16,079 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 18:14:16,152 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:14:16,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:14:16,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 18:14:16,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:14:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:16,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:14:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:16,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573940345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:14:16,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:14:16,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-09 18:14:16,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030104725] [2024-11-09 18:14:16,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:14:16,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:14:16,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:16,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:14:16,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:14:16,324 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:16,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:16,501 INFO L93 Difference]: Finished difference Result 243 states and 289 transitions. [2024-11-09 18:14:16,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 18:14:16,501 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-09 18:14:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:16,502 INFO L225 Difference]: With dead ends: 243 [2024-11-09 18:14:16,502 INFO L226 Difference]: Without dead ends: 165 [2024-11-09 18:14:16,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:14:16,503 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 311 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:16,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 195 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:14:16,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-09 18:14:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2024-11-09 18:14:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.1764705882352942) internal successors, (140), 119 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2024-11-09 18:14:16,514 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 64 [2024-11-09 18:14:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:16,514 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2024-11-09 18:14:16,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2024-11-09 18:14:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 18:14:16,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:16,516 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:16,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:14:16,719 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,SelfDestructingSolverStorable11 [2024-11-09 18:14:16,721 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:16,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1230472391, now seen corresponding path program 3 times [2024-11-09 18:14:16,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:16,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116497800] [2024-11-09 18:14:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:16,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 4 proven. 110 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:14:17,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116497800] [2024-11-09 18:14:17,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116497800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343134498] [2024-11-09 18:14:17,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:14:17,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:17,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:17,028 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 18:14:17,040 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 18:14:17,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 18:14:17,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:14:17,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:14:17,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:14:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-09 18:14:17,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:14:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-09 18:14:17,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343134498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:14:17,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:14:17,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2024-11-09 18:14:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192986467] [2024-11-09 18:14:17,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:14:17,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 18:14:17,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 18:14:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-11-09 18:14:17,351 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:18,829 INFO L93 Difference]: Finished difference Result 795 states and 910 transitions. [2024-11-09 18:14:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 18:14:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-09 18:14:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:18,832 INFO L225 Difference]: With dead ends: 795 [2024-11-09 18:14:18,832 INFO L226 Difference]: Without dead ends: 681 [2024-11-09 18:14:18,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1772, Invalid=3778, Unknown=0, NotChecked=0, Total=5550 [2024-11-09 18:14:18,834 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1866 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:18,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 250 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:14:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2024-11-09 18:14:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 222. [2024-11-09 18:14:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.1266968325791855) internal successors, (249), 221 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 249 transitions. [2024-11-09 18:14:18,854 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 249 transitions. Word has length 76 [2024-11-09 18:14:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:18,855 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 249 transitions. [2024-11-09 18:14:18,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 249 transitions. [2024-11-09 18:14:18,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-09 18:14:18,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:18,859 INFO L215 NwaCegarLoop]: trace histogram [48, 44, 8, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:18,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:14:19,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:19,060 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:19,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1309390012, now seen corresponding path program 4 times [2024-11-09 18:14:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:19,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111134091] [2024-11-09 18:14:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:19,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 886 proven. 132 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2024-11-09 18:14:19,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:19,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111134091] [2024-11-09 18:14:19,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111134091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:19,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901270782] [2024-11-09 18:14:19,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:14:19,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:19,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:19,590 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 18:14:19,597 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 18:14:19,726 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:14:19,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:14:19,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 18:14:19,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:14:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 908 proven. 2 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2024-11-09 18:14:19,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:14:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 906 proven. 4 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2024-11-09 18:14:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901270782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:14:20,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:14:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 24 [2024-11-09 18:14:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121510149] [2024-11-09 18:14:20,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:14:20,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 18:14:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:14:20,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 18:14:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2024-11-09 18:14:20,003 INFO L87 Difference]: Start difference. First operand 222 states and 249 transitions. Second operand has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:21,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:14:21,024 INFO L93 Difference]: Finished difference Result 974 states and 1084 transitions. [2024-11-09 18:14:21,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 18:14:21,024 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2024-11-09 18:14:21,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:14:21,027 INFO L225 Difference]: With dead ends: 974 [2024-11-09 18:14:21,027 INFO L226 Difference]: Without dead ends: 760 [2024-11-09 18:14:21,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1101, Invalid=2805, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 18:14:21,029 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1963 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:14:21,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 224 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:14:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-09 18:14:21,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 403. [2024-11-09 18:14:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.1144278606965174) internal successors, (448), 402 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 448 transitions. [2024-11-09 18:14:21,060 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 448 transitions. Word has length 174 [2024-11-09 18:14:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:14:21,060 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 448 transitions. [2024-11-09 18:14:21,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.375) internal successors, (105), 24 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:14:21,060 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 448 transitions. [2024-11-09 18:14:21,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-09 18:14:21,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:14:21,063 INFO L215 NwaCegarLoop]: trace histogram [104, 96, 12, 8, 8, 8, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:14:21,079 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 18:14:21,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:21,264 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:14:21,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:14:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1373713868, now seen corresponding path program 5 times [2024-11-09 18:14:21,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:14:21,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791397200] [2024-11-09 18:14:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:14:21,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:14:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:14:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10910 backedges. 2396 proven. 156 refuted. 0 times theorem prover too weak. 8358 trivial. 0 not checked. [2024-11-09 18:14:22,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:14:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791397200] [2024-11-09 18:14:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791397200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:14:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700051596] [2024-11-09 18:14:22,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:14:22,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:14:22,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:14:22,056 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 18:14:22,057 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 18:15:00,682 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-09 18:15:00,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:15:00,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 18:15:00,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:15:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10910 backedges. 6948 proven. 741 refuted. 0 times theorem prover too weak. 3221 trivial. 0 not checked. [2024-11-09 18:15:01,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:15:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10910 backedges. 6576 proven. 1113 refuted. 0 times theorem prover too weak. 3221 trivial. 0 not checked. [2024-11-09 18:15:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700051596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:15:01,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:15:01,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 33 [2024-11-09 18:15:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010970572] [2024-11-09 18:15:01,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:15:01,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 18:15:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:15:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 18:15:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 18:15:01,282 INFO L87 Difference]: Start difference. First operand 403 states and 448 transitions. Second operand has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 33 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:15:03,915 INFO L93 Difference]: Finished difference Result 1989 states and 2220 transitions. [2024-11-09 18:15:03,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-09 18:15:03,916 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 33 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2024-11-09 18:15:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:15:03,921 INFO L225 Difference]: With dead ends: 1989 [2024-11-09 18:15:03,921 INFO L226 Difference]: Without dead ends: 1620 [2024-11-09 18:15:03,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 666 SyntacticMatches, 3 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5943 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4040, Invalid=14320, Unknown=0, NotChecked=0, Total=18360 [2024-11-09 18:15:03,925 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 6419 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6419 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:15:03,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6419 Valid, 629 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:15:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2024-11-09 18:15:04,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1151. [2024-11-09 18:15:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.1043478260869566) internal successors, (1270), 1150 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1270 transitions. [2024-11-09 18:15:04,040 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1270 transitions. Word has length 298 [2024-11-09 18:15:04,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:15:04,073 INFO L471 AbstractCegarLoop]: Abstraction has 1151 states and 1270 transitions. [2024-11-09 18:15:04,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 33 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1270 transitions. [2024-11-09 18:15:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2024-11-09 18:15:04,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:15:04,087 INFO L215 NwaCegarLoop]: trace histogram [336, 312, 28, 24, 24, 24, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:15:04,156 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 18:15:04,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:15:04,289 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:15:04,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:15:04,289 INFO L85 PathProgramCache]: Analyzing trace with hash -38137292, now seen corresponding path program 6 times [2024-11-09 18:15:04,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:15:04,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497553769] [2024-11-09 18:15:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:15:04,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:15:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:15:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 113630 backedges. 9078 proven. 182 refuted. 0 times theorem prover too weak. 104370 trivial. 0 not checked. [2024-11-09 18:15:06,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:15:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497553769] [2024-11-09 18:15:06,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497553769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:15:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135714887] [2024-11-09 18:15:06,222 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:15:06,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:15:06,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:15:06,224 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 18:15:06,225 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 18:15:06,537 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 18:15:06,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:15:06,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 18:15:06,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:15:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 113630 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113628 trivial. 0 not checked. [2024-11-09 18:15:07,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:15:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 113630 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113628 trivial. 0 not checked. [2024-11-09 18:15:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135714887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:15:07,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:15:07,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 23 [2024-11-09 18:15:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345007986] [2024-11-09 18:15:07,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:15:07,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 18:15:07,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:15:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 18:15:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2024-11-09 18:15:07,937 INFO L87 Difference]: Start difference. First operand 1151 states and 1270 transitions. Second operand has 23 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:15:10,195 INFO L93 Difference]: Finished difference Result 4445 states and 5136 transitions. [2024-11-09 18:15:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-09 18:15:10,196 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 810 [2024-11-09 18:15:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:15:10,205 INFO L225 Difference]: With dead ends: 4445 [2024-11-09 18:15:10,205 INFO L226 Difference]: Without dead ends: 3330 [2024-11-09 18:15:10,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1710 GetRequests, 1614 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2921, Invalid=6585, Unknown=0, NotChecked=0, Total=9506 [2024-11-09 18:15:10,209 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3307 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:15:10,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3307 Valid, 264 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:15:10,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2024-11-09 18:15:10,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 1259. [2024-11-09 18:15:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.1049284578696343) internal successors, (1390), 1258 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1390 transitions. [2024-11-09 18:15:10,339 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1390 transitions. Word has length 810 [2024-11-09 18:15:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:15:10,339 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1390 transitions. [2024-11-09 18:15:10,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.869565217391305) internal successors, (135), 23 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1390 transitions. [2024-11-09 18:15:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2024-11-09 18:15:10,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:15:10,354 INFO L215 NwaCegarLoop]: trace histogram [360, 336, 28, 24, 24, 24, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:15:10,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 18:15:10,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 18:15:10,555 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:15:10,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:15:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1895199744, now seen corresponding path program 7 times [2024-11-09 18:15:10,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:15:10,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964381393] [2024-11-09 18:15:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:15:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:15:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:15:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 130448 backedges. 10412 proven. 210 refuted. 0 times theorem prover too weak. 119826 trivial. 0 not checked. [2024-11-09 18:15:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:15:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964381393] [2024-11-09 18:15:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964381393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:15:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853031186] [2024-11-09 18:15:12,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 18:15:12,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:15:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:15:12,615 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 18:15:12,622 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 18:15:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:15:13,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 3822 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 18:15:13,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:15:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 130448 backedges. 10412 proven. 210 refuted. 0 times theorem prover too weak. 119826 trivial. 0 not checked. [2024-11-09 18:15:13,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:15:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 130448 backedges. 10412 proven. 210 refuted. 0 times theorem prover too weak. 119826 trivial. 0 not checked. [2024-11-09 18:15:13,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853031186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:15:13,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:15:13,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2024-11-09 18:15:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177658133] [2024-11-09 18:15:13,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:15:13,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 18:15:13,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:15:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 18:15:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=1325, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 18:15:13,955 INFO L87 Difference]: Start difference. First operand 1259 states and 1390 transitions. Second operand has 49 states, 49 states have (on average 3.0816326530612246) internal successors, (151), 49 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:15:14,997 INFO L93 Difference]: Finished difference Result 3951 states and 4875 transitions. [2024-11-09 18:15:14,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 18:15:14,998 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.0816326530612246) internal successors, (151), 49 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 894 [2024-11-09 18:15:14,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:15:15,006 INFO L225 Difference]: With dead ends: 3951 [2024-11-09 18:15:15,007 INFO L226 Difference]: Without dead ends: 2730 [2024-11-09 18:15:15,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1819 GetRequests, 1757 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1552, Invalid=2480, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 18:15:15,011 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 874 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:15:15,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 488 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:15:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2024-11-09 18:15:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2411. [2024-11-09 18:15:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2410 states have (on average 1.0946058091286308) internal successors, (2638), 2410 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 2638 transitions. [2024-11-09 18:15:15,266 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 2638 transitions. Word has length 894 [2024-11-09 18:15:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:15:15,266 INFO L471 AbstractCegarLoop]: Abstraction has 2411 states and 2638 transitions. [2024-11-09 18:15:15,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.0816326530612246) internal successors, (151), 49 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 2638 transitions. [2024-11-09 18:15:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1663 [2024-11-09 18:15:15,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:15:15,295 INFO L215 NwaCegarLoop]: trace histogram [744, 720, 28, 24, 24, 24, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:15:15,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 18:15:15,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:15:15,495 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:15:15,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:15:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash 428114944, now seen corresponding path program 8 times [2024-11-09 18:15:15,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:15:15,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590429237] [2024-11-09 18:15:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:15:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:15:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:15:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 554000 backedges. 44268 proven. 930 refuted. 0 times theorem prover too weak. 508802 trivial. 0 not checked. [2024-11-09 18:15:21,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:15:21,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590429237] [2024-11-09 18:15:21,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590429237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:15:21,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823801424] [2024-11-09 18:15:21,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:15:21,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:15:21,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:15:21,690 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 18:15:21,691 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 18:15:23,056 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:15:23,056 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:15:23,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 7662 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 18:15:23,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:15:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 554000 backedges. 44268 proven. 930 refuted. 0 times theorem prover too weak. 508802 trivial. 0 not checked. [2024-11-09 18:15:23,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:15:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 554000 backedges. 44268 proven. 930 refuted. 0 times theorem prover too weak. 508802 trivial. 0 not checked. [2024-11-09 18:15:24,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823801424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:15:24,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:15:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 97 [2024-11-09 18:15:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968224719] [2024-11-09 18:15:24,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:15:24,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-09 18:15:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:15:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-09 18:15:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4099, Invalid=5213, Unknown=0, NotChecked=0, Total=9312 [2024-11-09 18:15:24,754 INFO L87 Difference]: Start difference. First operand 2411 states and 2638 transitions. Second operand has 97 states, 97 states have (on average 2.5463917525773194) internal successors, (247), 97 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:28,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:15:28,281 INFO L93 Difference]: Finished difference Result 7727 states and 9515 transitions. [2024-11-09 18:15:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-09 18:15:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.5463917525773194) internal successors, (247), 97 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1662 [2024-11-09 18:15:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:15:28,296 INFO L225 Difference]: With dead ends: 7727 [2024-11-09 18:15:28,296 INFO L226 Difference]: Without dead ends: 5386 [2024-11-09 18:15:28,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3387 GetRequests, 3261 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5825 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6176, Invalid=10080, Unknown=0, NotChecked=0, Total=16256 [2024-11-09 18:15:28,303 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2246 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:15:28,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 749 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:15:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2024-11-09 18:15:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 4715. [2024-11-09 18:15:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 4714 states have (on average 1.089096308867204) internal successors, (5134), 4714 states have internal predecessors, (5134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 5134 transitions. [2024-11-09 18:15:28,702 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 5134 transitions. Word has length 1662 [2024-11-09 18:15:28,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:15:28,703 INFO L471 AbstractCegarLoop]: Abstraction has 4715 states and 5134 transitions. [2024-11-09 18:15:28,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.5463917525773194) internal successors, (247), 97 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:15:28,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 5134 transitions. [2024-11-09 18:15:28,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3199 [2024-11-09 18:15:28,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:15:28,744 INFO L215 NwaCegarLoop]: trace histogram [1512, 1488, 28, 24, 24, 24, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:15:28,771 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 18:15:28,944 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,SelfDestructingSolverStorable17 [2024-11-09 18:15:28,945 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:15:28,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:15:28,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1476353024, now seen corresponding path program 9 times [2024-11-09 18:15:28,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:15:28,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036824550] [2024-11-09 18:15:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:15:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:15:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat